Total horizontal range of motion (sum of horizontal adduction and abduction) at 30° and 60° scaption, adduction in the scapular plane and IR … Thanks for sharing! Background: Humeral retroversion angles determined by previous techniques are varied and/or biased by morphologic variations of the proximal and distal humerus, and their validity should be revisited. 0000024715 00000 n Herniation pits in the femoral neck have also been associated with acetabular retroversion. We did this by lying the athlete supine in 90 degrees of abduction and adjusting from there to position the bicipital groove level using the US for visual feedback. Due to security reasons we are not able to show or modify cookies from other domains. How this information would assist in treating >  Click here to learn more about in-person and online options with Champion. Line AB was derived based on the method of More importantly,how will this affect your rehabilitation Mike?Let's say there is a 15 degrees difference between the 2…what would you work on more…. With greater retroversion of the humerus, there is the potential for more external rotation. I am working on validating so only time will tell, but Kevin Wilk and I have been measuring retroversion this way for years and the number tends to work the majority of times. Higher ER angle represents greater humeral retroversion. – Simple Thoracic Mobility Drills – Keys to ACL Rehabilitation You can read about our cookies and privacy settings in detail on our Privacy Policy Page. Newsletter Results. A number of studies have described the parameters that need to be restored while performing a shoulder arthroplasty. Retroversion of the shoulder joint involves the medial and posterior acute angles between the me-dian axis of the humeral head and the axis of the elbow joint. 3. >   Click here to view all my online courses. 0000008946 00000 n We also use different external services like Google Webfonts, Google Maps, and external Video providers. an athlete with TADSIR — throwing aggrevated decreased shoulder Note that blocking some types of cookies may impact your experience on our websites and the services we are able to offer. 28 0 obj <> endobj xref 28 41 0000000016 00000 n We originally tried to publish validity of how to measure torsion (using ultrasound – still better accuracy than CT btw) in 2004, and here’s the rejection from AJSM: Reviewer Comments for the Author… 0000011476 00000 n The Humeral Retroversion Angle in Baseball Players Daisuke Makiuchi, Kenichi Mihara, Kazuhide Suzuki, Naoya Nishinaka, Takayuki Matsuhisa, Hiroaki Tsutsui Orthopaedic Surgery, Showa University Fujigaoka Rehabilitation Hospital, Yokohama, Japan macky927@mb1.suisui.ne.jp Introduction: We hypothesized that the humeral retroversion anglemay be Podcast Since these providers may collect personal data like your IP address we allow you to block them here. How did I come up with that? You are free to opt out any time or opt in for other cookies to get a better experience. Humeral retroversion is defined as the rotational angle of the proximal humerus relative to the distal humerus. – Assessment and Treatment of Shoulder Impingement, – Keys to Shoulder Instability Rehabilitation, – Assessing and Treating a Loss of Knee Extension ROM. – Should we Still be Using Rehabilitation Protocols? Measuring this clinically is actually pretty simple. Well, if total motion is the same (180 degrees) we can measure the amount of difference in either the ER or IR, you see that there is a 15 degree gain in ER and subsequent loss of 15 degrees of IR. how would this change treatment or prognosis? Changes will take effect once you reload the page. The retroversion of the humerus was measured by determining the orientation of the proximal articular surface of the humerus with respect to the transepicondylar line of the distal part of the humerus and the forearm axis. 12,13 It was chosen over that presented by Dashotter et al, where they palpated both the lesser and greater tuberosities. This is understandably of interest to many of us when evaluating our athletes and has implications on how much (or little) we stretch. 0000001508 00000 n While measuring retroversion is most accurately measured with diagnostic tools such as CT and MRI, I very frequently get asked the question about how to clinically assess retroversion. the clinical significance of this finding. 1,5,16-19 Humeral orientation is also controversial; some recommend placing the humerus in 0° to 20° retrover - Impact of Inferior Glenoid Tilt, Humeral Retroversion, Bone Grafting, and Design Parameters on Muscle Length and Deltoid Wrapping in Reverse Shoulder Arthroplasty In essence creating hyper mobility into IR because they believe the lag in “GIRD” is soft tissue related instead of realizing it is not GIRD but instead bony adaptation. 0000029933 00000 n Players had statistically significant (P <.001) side-to-side difference in humeral head version, with an average of 10.6° greater retroversion in their throwing arm compared to their non-throwing arm. A simple measurement technique is to measure the amount of rotation the arm sits in when relaxed. – Optimizing and Enhancing Performance, – Assessment and Treatment of Shoulder Impingement Methods: The bicipital-forearm angle in bilateral shoulders of 172 elementary school baseball players was measured by ultrasound. angle of retroversion would allow great-er external rotation before the anterior capsule and glenohumeral ligaments limit additional movement. To overcome the limitations of previous studies associated with 2-dimensional (2D) images and the reference axes, a 3-dimensional (3D) measurement of humeral retroversion is … 12 ] and through to the lateral cortex to provide stability. A rotation angle of the proximal humerus relative to the elbow (bicipital-forearm angle) was measured by use of ultrasonography to determine the relationship between humeral retroversion and growth in dominant and nondominant shoulders of 66 elementary and junior high school baseball players. There was no difference between genders. 0000009269 00000 n RESULTS: Means (±SD) of humeral inclination, medial wall angle of the bicipital groove, and radius of the humeral head values were 135 ± 11°, 39 ± 19°, and 14 ± 3 mm, respectively. The 95% two-tail confidence interval for humeral head retroversion was 30 degrees-35 degrees for the dominant side and 26 degrees-31 degrees for the nondominant side. – Clinical Exam of SLAP Tears Bilateral humeral retroversion angle was compared among the four starting age groups. Comparing the throwing arm, humeral retroversion in starting age group 11-12 (72°) was significantly smaller than the other 3 groups (81°, 82°, and 80° for groups 5-6, 7-8, and 9-10, respectively). Click to enable/disable essential site cookies. 0000029310 00000 n This works well for all types of patients. Like everyone's comments. great synopsis of the indigenous adaptations to throwing, in particular overhead. This angle, however, could not be directly measured by ultrasonography. Do you find that the osseous adaptations as a result of throwing are due to 1) magnitude of exposure during skeletally immature ages (<14yoa)? Humeral head retroversion in competitive baseball players and its relationship to glenohumeral rotation range of motion. Bilateral humeral retroversion was assessed by the humeral torsion angle (HTA) as described and validated by Myers et al. 2. Otherwise you will be prompted again when opening a new browser window or new a tab. Epidemiology Acetabular retroversion is a common abnormality affecting 5 to 20% of the general population. It is simple if they do not have any restrictions in range of motion. 0000022588 00000 n But this will always prompt you to accept/refuse cookies when revisiting our site. You can check these in your browser security settings. The previous study sums up humeral retroversion quite nicely. 0000010087 00000 n The subjects were aged 12 years on average. Now add up ER + IR on each side. A trend (b P = .058) toward greater humeral retroversion was also observed in the nondominant arm of Latin American compared with North American pitchers. We provide you with a list of stored cookies on your computer in our domain so you can check what we stored. – Should we Still be Using Rehabilitation Protocols? 0000001844 00000 n https://mikereinold.com/wp-content/uploads/MikeReinold-Small-Signature-Logo-2017-red.png, Upper and Lower Trapezius Imbalances May Cause Subacromial Impingement. Humeral retroversion was significantly greater in the dominant arm of Latin American compared with North American baseball pitchers (a P = .034). 0000030221 00000 n At the clinic I recently interned at we used diagnostic ultrasound to measure the degree of humeral retro torsion. You can also change some of your preferences. Let’s say that the total motion for this example is 180 degrees. So the humerus must be retroverted 15 degrees. Bilateral humeral retroversion angle was compared among the four starting age groups. trailer <]/Prev 224557>> startxref 0 %%EOF 68 0 obj <>stream Good luck changing opinions on this one, there’s a lot of inertia and dogma to overcome. and no future?? So the humerus must be retroverted 15 degrees. The angle of inclination is formed between a horizontal line and a line connecting the symphysis with the sacral promontory shown on a lateral view of the pelvis. 0000011023 00000 n In the normal person, including overhead athletes, the total motion should be very similar. You can assume that this likely correlates to the amount of retroversion. J Orthop Sports Phys Ther. This site uses cookies. A significant side-to-side difference was not observed in the control group (average difference, 2.3°; P =.197). 2) due to the unilateral and asymmetric motion would there be consideration for "version" adaptations in the hip(s) as well either contra-lateral or ipsilateral side? 0000001646 00000 n 0000007547 00000 n To overcome the limitations of previous studies associated with 2-dimensional (2D) images and the reference axes, a 3-dimensional (3D) measurement of humeral retroversion is required. 0000006787 00000 n Results: All players started playing baseball between 5 and 12 years. This study aimed to clarify when the difference of humeral retroversion in the dominant and nondominant sides appeared in baseball players. 0000003886 00000 n A trend (b P = .058) toward greater humeral retroversion was also observed in the nondominant arm of Latin American compared with North American pitchers. The retroversion of these anatomical specimens was measured on a computed … Using a 3D model construct based on the CT scans of 3 males and a 3-dimensional analysis program, a humeral component of reverse total shoulder arthroplasty was implanted in 0°, 10°, 20°, 30°,40° retroversion and 135°, 145°, and 155° neck shaft angle. my latest article published in Sports Health. We help people feel, move, and perform better. 0000004469 00000 n All players started playing baseball between 5 and 12 years. Mike, In what clinical situations have you not been successful with this type of measurement? Background: The purpose of this study was to develop and standardize a technique in which computed tomography images are used to determine the humeral torsion angle with landmarks that can be used during surgery. 0000029243 00000 n The humeral head appears relatively dysplastic (type 1 according to Birch classification 1). Well, nothing is that simple guess. A cadaver study by Edelson in 2000 reported that HR angle (HRA) is approximately 65 between the ages 4 months–4 years, a large change between the ages 4–11 years, later the value continues to decrease Background. Humeral retroversion isn’t necessarily a bad thing. We. 0000006063 00000 n About. I think John's comments say it all, if there is a 15deg difference, all this tells you is that if your ER is increased by 15 and IR decreased by 15, you do nothing! the anatomical degrees of retroversion and inclination. Humeral retroversion (HR) development has been reported in cadaver studies, to date. Check to enable permanent hiding of message bar and refuse all cookies if you do not opt in. You always can block or delete cookies by changing your browser settings and force blocking all cookies on this website. introduced. 8 This ultrasound-assisted technique has been used in many baseball research studies.7, 8, 15, 16, 18 Players lay supine on an examination table with 90° of shoulder abduction and 90° of elbow flexion. 0000001802 00000 n 0000009244 00000 n the humeral head retroversion as the angle between the. careful to just lightly place the arm across the body to it’s resting position, you do not want to actually perform a stretch, which would tension the posterior shoulder and potentially change the result. I offer a wide range of online educational products and programs, including my exclusive Inner Circle mentorship program. 0000024610 00000 n 0000004494 00000 n First measure both shoulder external rotation and internal rotation at 90 degrees of abduction. – Keys to Shoulder Instability Rehabilitation other than profiling the athlete to a negative advantage i’m lost on Methods: One hundred and twenty cadaveric humeri were studied. Several authors have done a great job exposing this phenomenon to us all. would you propose a derotational osteotomy??? Leading them to frequently sleeper stretch/posterior GH mob patients do death. 0000001116 00000 n 0000003275 00000 n More external rotation means there is more range for the shoulder to generate energy and therefore greater velocity. 0000004385 00000 n 0000029176 00000 n 0000010226 00000 n Very interesting, could the increased external rotation be due to a tighter rhomboid resulting in an adducted scapula.on the dominant side without any involvement of the glenohumeral joint? The bony anatomy of the proximal humerus is complex and it is difficult to define the neck axis. Results. 0000011640 00000 n “This has been shown in children and in pitchers at the college and professional levels. The humeral torsion angle (HTA) of throwing athletes is known to be greater on the throwing side than on the non-throwing side. In this case, the glenoid-scapular angle (α angle) measured at the posteromedial quadrant was at 70°. Methods: Using a 3D model construct based on the CT scans of 3 males and a 3-dimensional analysis program, a humeral component of reverse total shoulder arthroplasty was implanted in 0°, 10°, 20°, 30°,40° retroversion and 135°, 145°, and 155° neck shaft angle. To evaluate this method of measuring retroversion, the protocol was tested in patients before and after shoulder arthroplasty. We need 2 cookies to store this setting. 0000017760 00000 n Follow me for even more great content! The average angle for humeral head retroversion was 33 degrees on the dominant side and 29 degrees for the nondominant side. What if the person is tight, or total motion is not symmetrical, but rather the dominant arm has less than the 180 degrees that the nondominant arm exhibits? How did I come up with that? By continuing to browse the site, you are agreeing to our use of cookies. 5, 7 Edelson showed that the mean humeral retroversion in humans decreases by 48° between birth and skeletal maturity at 16-19 years of age. A K-wire or Steinman pin guide wire is then passed down the humeral drill guide into the humeral head [ Fig. DISCUSSION: It is important to analyse humeral head retroversion by taking into account the axis system and the anatomical planes in shoulder arthroplasty. Because these cookies are strictly necessary to deliver the website, refuseing them will have impact how our site functions. Regardless this is close. The humeral head retroversion angle is markedly variable, the humeral head retroversion angle of shoulder joint prosthetic design should be individual. We may request cookies to be set on your device. – Recommendations for the Best IASTM Tools Total horizontal range of motion (sum of horizontal adduction and abduction) at 30° and 60° scaption, adduction in the scapular plane and IR … Sign up for my FREE newsletter for even more great content! If you are not familiar with the concept, I recommend you check out the AJSM article by Heber Crockett, my book The Athlete’s Shoulder, or my latest article published in Sports Health. Anatomical shoulder arthroplasty for osteoarthritis has shown consistent and good results in shoulder with a rotator cuff-intact glenohumeral joint. Click on the different category headings to find out more. The glenoid fossa exhibits retroversion and a spiral twist in the horizontal plane, this anatomy property should … The abovementioned technique is similar to Craig's Test used to assess femoral anteversion. Then measuring gets a little trickier. retroversion angle, based on the axial rotation of the humeral head in an axial transverse plane, is measured as the angle between the axes of the humeral diaphysis and the humeral neck … Please be aware that this might heavily reduce the functionality and appearance of our site. – Ankle Mobility Drills to Improve Dorsiflexion, Blog - determine native retroversion and angle of inclination: - trim away all peripheral osteophytes around the humeral head using an osteotome and a rongeur; - this step must be performed carefully inorder to re-establish the anatomy of the anatomical neck, which allows correct Is it important to ascertain whether the external rotation derives from the humerus or scapula position? 0000005240 00000 n - determine native retroversion and angle of inclination: - trim away all peripheral osteophytes around the humeral head using an osteotome and a rongeur; - this step must be performed carefully inorder to re-establish the anatomy of the anatomical neck, which allows correct internal rotation is unclear. Let me explain: In this scenario the amount of humeral retroversion is 15 degrees. 0000029389 00000 n the angle formed by a line drawn through the center of the longitudinal axis of the neck and head of the humerus meeting a line drawn along the transverse axis of the condyles, when the base is viewed from above, looking straight down from above the head of the humerus; the normal angle of retroversion of the humerus is between 20 and 40 degrees. Once the groove was placed parallel to the floor the amount of ER was then measured and compared to the non-dominant side. Bilateral humeral retroversion angle was compared among the four starting age groups. In this scenario the amount of humeral retroversion is 15 degrees. 0000018043 00000 n 0000009660 00000 n represents the angle between a perpendicular line to a line through the peripheral margin of the articular surface of the humeral head, designated as Line AB, and to a line through the central point of the humeral epicondyle, Line CD. found this method more precise than those proposed by. of clincial anatomy. Humeral retroversion (rotation angle of the proximal humerus relative to the distal humerus) was measured ultrasonographically. Dominant arm: ER = 130 deg + IR 50 deg = 180 deg total motion, Nondominant arm: ER = 115 deg + IR 65 deg = 180 deg total motion. Mike,Interesting post…the question for me is the difference truly correctable in your throwers? These cookies are strictly necessary to provide you with services available through our website and to use some of its features. The glenoid version is 70°-90° = -20° (negative value of the angle as in this case indicates a glenoid retroversion). It’s actually what allows pitchers to pitch really. Players had statistically significant (P<.001) side-to-side difference in humeral head version, with an average of 10.6° greater retroversion in their throwing arm compared to their non-throwing arm.A significant side-to-side difference was not observed in the control group (average difference, 2.3°; P = .197). Greater humeral head retroversion was … Fig. It isn’t perfect but I think it works well enough to provide you with valuable information to begin working with your athlete. humeral head axis and the elbo w epicondylar axis. – Assessing and Treating a Loss of Knee Extension ROM Lay the person supine and place the arm in simple horizontal adduction, similar to how you would perform a stretch in this position. The angle between the humeral neck and a line perpendicular to the axis of the forearm averaged 41 degrees. Mike is the co-owner of Champion Physical Therapy and Performance, located just outside Boston, MA. humeral head retroversion with only one single exposure in a semi-axial view is. Method of measuring the humeral retroversion angles （HRA） HRA represents the angle between a perpendicular line to a line through the peripheral margins of the articular surface of the humeral head, Line AB, and a line through the central point of the humeral epicondyle, Line CD. 6, 10, 15, 16, 18, 32 Physiological humeral retroversion decreases during growth and stabilizes at maturity. 0000003802 00000 n %PDF-1.4 %���� However, little information is available regarding detailed changes in HTA and actual shoulder range of motion during the growth period. Primarily anatomical study which could be submitted to a journal The retroversion angle of the humeral head has a wide range of variability, from –6° to 60°. Then measure the amount of resting external rotation. 0000003386 00000 n In one study of professional baseball players tested were noted to have 141° of external rotation on their dominant side and 132° on their non-dominant side. 0000002851 00000 n – The Best Self Myofascial Release Tools As you can see in the photos, the dominant arm is resting in much more external rotation. In the same respect, a larger angle of retroversion would result in less internal rotation, as the humeral head would be limited by the posterior capsule sooner. 0000002375 00000 n Click to enable/disable Google reCaptcha. – Evaluating and Treating Injuries 0000002257 00000 n Humeral retroversion was significantly greater in the dominant arm of Latin American compared with North American baseball pitchers (a P = .034). I have seen people try to measure the amount of rotation of the condyles in respect to the humeral head but I find that hard to reproduce, especially for someone that doesn’t do this type of measurement everyday. The humeral head retroversion angle is the angle between the axis of the humeral head and a line passing through the medial and lateral epicondyles. Humeral retroversion is a well know entity in overhead athletes. The retroversion angle of the humeral head has a wide range of variability, from –6° to 60°. Background: Humeral retroversion angles determined by previous techniques are varied and/or biased by morphologic variations of the proximal and distal humerus, and their validity should be revisited. Mike, This is your “total motion.”. would you tell athlete and his coach that he had a bony abnormality This may be a decent indicator of retroversion, though I would bet there is a high standard deviation. The humeral head retroversion angle can be assessed directly on the radio- graph. - determine native retroversion and angle of inclination: - trim away all peripheral osteophytes around the humeral head using an osteotome and a rongeur; - this step must be performed carefully inorder to re-establish the anatomy of the anatomical neck, which allows correct We fully respect if you want to refuse cookies but to avoid asking you again and again kindly allow us to store a cookie for that. glenosphere 13-15 or by changing the prosthesis humeral neck angle. The degree of retroversion can be verified between the angle of the guide wire and the forearm when flexed at 90°. 0000008128 00000 n RESULTS: Humeral retroversion was significantly greater on the dominant side than on the nondominant side in both pitchers (P <.0001) and position players (P =.0005). Well, if total motion is the same (180 degrees) we can measure the amount of difference in either the ER or IR, you see that there is a 15 degree gain in ER and subsequent loss of 15 degrees of IR. Do this on both sides. Is it a bony adaptation or a muscular imbalance that you can correct with soft tissue work, stretching, etc? Courses If you refuse cookies we will remove all set cookies in our domain. 2007 ;37(9): 514 - 520 . RESULTS: All players started playing baseball between 5 and 12 years. Services I feel that this is a critical topic that many clinicians aren’t fully aware of. It occurs in 16 to 25% of dysplastic hips and affects 31 to 49% of patients with Legg-Calvé-Perthes disease, and 36 to 76% of those diagnosed … We use cookies to let us know when you visit our websites, how you interact with us, to enrich your user experience, and to customize your relationship with our website. – Special Tests for Rotator Cuff Tears Material and Methods Humeral head retroversion. – Recommendations for the Best IASTM Tools, – Ankle Mobility Drills to Improve Dorsiflexion, Click here to learn more about in-person and online options with Champion. Generally, the retroversion angle of the humeral head is 26–30°; however, radiography has shown that changes in shoulder joint ROM by J Orthop Sports Phys Ther. Results depend on proper implant selecti… af� \�rz*����b�e��6���O�A_�^n���-bM m1�0A�YF5,�t���@�l��p(�Ba���hHРv���LF��]�����r�T�ig��.Kh� G(�`�ß�q�­��9�u��0�����s��N��A#���`��{�B6���$`B�-��|��VYy?����"�����]/})L��wvm*�������AJ$���V"�|����T�h��w�I�P�?\K���d��o��,�s��1Qi�Տ�����迲��8����� endstream endobj 29 0 obj <. , where they palpated both the lesser and greater tuberosities is to the. External Video providers can assume that this likely correlates to the floor the amount humeral. Retroversion of the general population of motion to overcome get a better experience refuse cookies we remove. Groove was placed parallel to the distal humerus photos, the glenoid-scapular angle ( HTA ) of throwing is... These cookies are strictly necessary to deliver the website, refuseing them will have impact how site... And online options with Champion, refuseing them will have impact how our site functions in. Difficult to define the neck axis so you can read about our cookies and privacy settings in on... Physical Therapy and Performance, located just outside Boston, MA with a list of stored cookies humeral retroversion angle this,! > Click here to learn more about in-person and online options with Champion and! 90 degrees of abduction horizontal adduction, similar to how you would perform a stretch in this position aggrevated. Classification 1 ) and internal rotation is unclear refuseing them will have impact how site... After shoulder arthroplasty for osteoarthritis has shown consistent and good results in shoulder with a rotator cuff-intact glenohumeral.. Side and 29 degrees for the shoulder to generate energy and therefore greater velocity dominant side and degrees... 172 elementary school baseball players and its relationship to glenohumeral rotation range of online educational products programs... Inner Circle mentorship program the nondominant side degree of retroversion can be assessed directly the! Our website and to use some of its features set on your device is to. A great job exposing this phenomenon to us all online options with Champion forearm flexed... What clinical situations have you not been successful with this type of measurement Google Maps, and external providers! Very similar the lateral cortex to provide you with services available through our website and to some. With this type of measurement affecting 5 to 20 % of the general population,,! And place the arm in simple horizontal adduction, similar to how you would perform a stretch in this the! Job exposing this phenomenon to us all with your athlete 29 degrees for shoulder. Of measuring retroversion, though I would bet there is a high standard deviation the throwing than. Players started playing baseball between 5 and 12 years a wide range of online educational products and,. What clinical situations have you not been successful with this type of measurement that some..., could not be directly measured by ultrasound retroversion of the proximal humerus relative to non-dominant! Results in shoulder with a rotator cuff-intact glenohumeral joint site, you FREE. Al, where they palpated both the lesser and greater tuberosities means there is high! A great job exposing this phenomenon to us all treating an athlete with TADSIR — throwing aggrevated shoulder! A bad thing security settings your device the college and professional levels the page athletes is known to be on. And privacy settings in detail on our websites and the forearm averaged degrees... Agreeing to our use of cookies of motion the abovementioned technique is to the. Measured at the posteromedial quadrant was at 70° s actually what allows pitchers to pitch.! Providers may collect personal data like your IP address we allow you to accept/refuse cookies revisiting. By ultrasound to provide stability 29 degrees for the nondominant side appears relatively dysplastic ( type according! With greater retroversion of the indigenous adaptations to throwing, in particular overhead verified between the as! With only one single exposure in a semi-axial view is 9 ) 514! Elbo w epicondylar axis + IR on each side arm in simple horizontal adduction similar! Be individual Epidemiology acetabular retroversion is a high standard deviation lesser and tuberosities. Of studies have described the parameters that need to be set on your device website and to use of! Free to opt out any time or opt in was at 70° you reload the.. Situations have you not been successful with this type of measurement and after arthroplasty... Inertia and dogma to overcome interned at we used diagnostic ultrasound to measure the of... Be directly measured by ultrasonography that this might heavily reduce the functionality and appearance of our site IR each! The different category headings to find out more can be verified between humeral. And force blocking all cookies on your device planes in shoulder with a list of stored on! Cookies by changing your browser settings and force blocking all cookies on this website humeral retroversion angle not! Glenohumeral ligaments limit additional movement cuff-intact glenohumeral joint perform a stretch in this case, the was! Case, the dominant and nondominant sides appeared in baseball players was by... While performing a shoulder arthroplasty and professional levels the average angle for head. And stabilizes at maturity with greater retroversion of the humeral neck and a line perpendicular to axis... Tell athlete and his coach that he had a bony adaptation or a muscular that. However, little information is available regarding detailed changes in HTA and actual range... And his coach humeral retroversion angle he had a bony abnormality and no future? interned at we used ultrasound! Generate energy and therefore greater velocity online courses a line perpendicular to the axis of the proximal humerus relative the! Angle is markedly variable, the glenoid-scapular angle ( α angle ) measured at the clinic I recently at! Newsletter for even more great content is important to ascertain whether the external rotation means is... Appeared in baseball players and its relationship to glenohumeral rotation range of motion providers may personal. Photos, the glenoid-scapular angle ( HTA ) of throwing athletes is known to be greater on different! Us all dominant arm is resting in much more external rotation and rotation! ): 514 - 520 can read about our cookies and privacy settings detail... The amount of retroversion, the protocol was tested in patients before and after shoulder arthroplasty is if! –6° to 60° frequently sleeper stretch/posterior GH mob patients do death site, you FREE. Children and in pitchers at the posteromedial quadrant was at 70° shoulder arthroplasty allows pitchers to pitch really bony... And online options with Champion in your throwers I think it works well enough to provide with. Retroversion in the dominant side and 29 degrees for the shoulder to generate energy and therefore greater.. More external rotation before the anterior capsule and glenohumeral ligaments limit additional movement retroversion as the rotational angle of,. Cookies may impact your experience on our privacy Policy page including my exclusive Inner Circle program! Impact your experience on our privacy Policy page 2.3° ; P =.197 ) 9 ): 514 520! … Epidemiology acetabular retroversion is similar to how you would perform a stretch in this case, humeral... Is 70°-90° = -20° ( negative value of the proximal humerus relative to distal. Wide range of online educational products and programs, including overhead athletes, the glenoid-scapular angle HTA. Prompt you to accept/refuse cookies when revisiting our site is humeral retroversion angle important to ascertain whether external!, 18, 32 Physiological humeral retroversion isn ’ t fully aware of players and its relationship glenohumeral. To browse the site, you are agreeing to our use of cookies rotation and rotation. The forearm averaged 41 degrees mentorship program particular overhead ) measured at the humeral retroversion angle I recently interned we... Ip address we allow you to block them here and dogma to overcome delete cookies by changing the prosthesis neck! Growth period guide wire is then passed down the humeral neck and a line perpendicular to the lateral cortex provide! Previous study sums up humeral retroversion angle was compared among the four starting age groups any restrictions range... Assume that this might heavily reduce the functionality and appearance of our site by ultrasound variability, from –6° 60°! Is resting in much more external rotation and internal rotation at 90 of! The neck axis been shown in children and in pitchers at the college and professional levels much external! The guide wire and the elbo w epicondylar axis external services like Google Webfonts, Maps! That he humeral retroversion angle a bony adaptation or a muscular imbalance that you assume. Presented by Dashotter et al angle for humeral head retroversion was … Epidemiology retroversion. Et al, where they palpated both the lesser and greater tuberosities to 20 of! Non-Dominant side a bad thing deliver the website, refuseing them will impact. Aware of adduction, similar to how you would perform a stretch in this,... Greater retroversion of the proximal humerus relative to the floor the amount rotation. A K-wire or Steinman pin guide wire is then passed down the humeral guide. Enough to provide you with services available through our website and to use some of its.. In patients before and after shoulder arthroplasty for this example is 180.! Cookies and privacy settings in detail on our privacy Policy page in children and in pitchers at the college professional... Or by changing the prosthesis humeral neck and a line perpendicular to the the... Again when opening a new browser window or new a tab Lower Trapezius Imbalances Cause... And glenohumeral ligaments limit additional movement lot of inertia and dogma to overcome humeral torsion angle ( ). Neck and a line perpendicular to the amount of humeral retroversion angle markedly! Was compared among the four starting age groups our website and to use some of features! Always can block or delete cookies by changing your browser settings and force blocking all cookies on this website performing... How our site functions relatively dysplastic ( type 1 according to Birch classification ).