Differences between results in terms of sex and age groups were evaluated with the Mann-Whitney U test. [Results] The average angle of the glenoid version was -4.26° on the throwing side and -1.18° on the non-throwing side. HTA median value was 19.5 degrees (25th to 75th percentile: 8.3 degrees-30.5 degrees; range: -4 degrees to 41 degrees) in all healthy volunteers. �w �e�$oy��,^����>������>\7cN��?Zx�d{/�Z��Fij�M���2AJ��)%\���z��Ƣ�r�xs�s�ؑ��_|k����b;+�RT�^���ԥj�6A��;}e����;�c=W:?Z��(���.��" �o��Y���5-f"O*6�I�b�/ Determining Torsion Angle of Humerus Head Using MRI Method - PubMed Considering intersocietal anatomic differences, our study may shed light on torsion angle for Turkey by determining mean torsion angle value.  |  Hromádka R, Pokorný D, Popelka S, Jahoda D, Sosna A. Acta Chir Orthop Traumatol Cech. In general, increased humeral torsion was positively associated with increased internal rotation (IR) and decreased external rotation (ER) ROM. endstream endobj 32 0 obj<>stream 3 ). were the first to suggest a relationship between humeral torsion and shoulder instability (3). Differences between results in terms of sex and age groups were evaluated with the Mann-Whitney U test. In 1971 DEBEVOISE et al. The humeral torsion angle (HTA) was calculated using axial MRI images. Results indicate humeral torsion angles bilaterally of approximately 30° (dominant: 27 ± 10°; non-dominant: 31 ± 10°) . However, little information is available regarding detailed changes in HTA and actual shoulder range of motion during the growth period. In an evolutionary context, humeral torsion refers to the orientation (angle) of the humeral head relative to the mediolateral axis of the distal humerus (Larson, 2007; Rhodes, 2007). Humeral torsion d Release Point Low torsion High torsion a Figure 4 | Humeral torsion and throwing performance. Orthopaedic interest in humeral torsion goes back to the 70's. STUDY OF ANGLE OF HUMERAL TORSION - Paripex - Indian Journal Of Research(PIJR) PIJR is a double reviewed monthly print journal that accepts research works Currently imaging is required to quantify the HT angle, however, factors such as cost and non-availability of imaging to musculoskeletal clinicians limits its use. The study consisted of 36 healthy adults (18 males and 18 females aged between 20 and 68 years). Epub 2013 Jun 20. RESULTS: Average humeral torsion angles of 27±10° (dominant side) and 31±10° (non-dominant side) were demonstrated in this elite swimming cohort. Background/aim: J Shoulder Elbow Surg. Meanwhile, we have measured the angle of humeral … Line aa* denotes starting position, postulated toy the writer. Epub 2016 Oct 1. OM��J|ǚv!w$�}�oI�]6�i*1'��f��������Èv#�LA7ޢ�N�Y,�|Lr�k�@��~#Y����ޒ� J��BI.��Wr��O�����{�M�G�{�2���z�C�2���9s���};�9\}�J���3!y%��M)�� 5�iD�0�/��1)d)���b��NX>�n��_�Υ���{����m��.kPi�x�y�p.�%﨏K���~;��. ANGLES: 1. doi: 10.7860/JCDR/2016/22121.8672. 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). Retroversion of the humeral head in the normal shoulder and its relationship to the normal range of motion. Mean mechanical lateral distal humeral angle, mechanical caudal proximal humeral angle, and mechanical cranial distal humeral angle were 89.5 ± 3.5°, 50.2 ± 4.5°, and 72.9 ± 7.8°, respectively, and did not differ from corresponding radiographic measurements. West EA, Knowles NK, Athwal GS, Ferreira LM. The present study showed no correlation between the torsion angle and the length of the humerus. The angles between line A and B, and between line C and D were taken as torsion of the humeral head and glenoid version respectively. HHS Clin Orthop Surg. After that, posteroanterior semi-axial radiographs of both humerus bones of 40 healthy volunteers were taken by positioning their arms in 20° abduction to the X-ray axis. Determining Angle of Humeral Torsion Using Image Software Technique. Moreover, we also think that this study will provide benefits in examining pathologies related to the shoulder joint, such as recurrent anterior dislocation syndrome. Despite a wide variation in the humeral torsion angle among the specimens from the different cadavera, the angle varied little between the two normal humeri of the same individual (mean side-to … a–c Low humeral torsion shifts the shoulder rotational ROM externally (a), enabling increased negative work during arm-cocking to be stored as elastic energy (b), and ©2013 36572+ Manuscript submission, 9855+ Research Paper Published, 100+ Articles from over 100 Countries The side-to-side difference in HTA (d-HTA), glenohumeral ER difference (GERD), and glenohumeral IR …  |  Recent clinical studies have revived this topic by linking patterns of humeral torsion to … Angle of inclination=130-150 degrees 2. 2018 Jul;10(3):192-200. doi: 10.1177/1758573217711897. The median HTA was 21.5 degrees (25th to 75th percentile: 7.8 degrees -28 degrees; range: -4 degrees to 36 degrees) in females, while it was 18.5 degrees (25th to 75th percentile: 7.5 degrees-32.3 degrees; range: 2 degrees to 41 degrees) in males. v�����2T������ӱ'U\��-�fh� �0+�]��G`{�m?���i�(���ȣ���zɋ��z�S%���`i������a�: �Ctv� {�cY�������6��9���0��x����ğ�g��r"e}вv����UTʲ컸�C����e��C$��u��@Hɖ��0B���UxM�X���:3]n�*�U�(E�-i�o���'�E���g�~����ns���|��O]��ܥJQ�R�[�u� �~0 ���' So the humerus must be retroverted 15 degrees. posterior humeral head subluxation. Shoulder Elbow. torsion angle across the geographical locations (Figures ,, , and ). The gender of the bones was also determined... Observations: The humeral torsion is greater in the male than in the female and greater on right side than left side humeri possibly because most individuals are right handed. The identified associations include altered glenoid version [1], decreased humeral torsion [2], and variations in proximal humeral and acromial morphologies [3]. 2017 Jun;9(2):223-231. doi: 10.4055/cios.2017.9.2.223. J Clin Diagn Res. The glenohumeral internal rotation (IR) angle and external rotation (ER) angle were measured at 90° shoulder abduction, and HTA was assessed using indirect ultrasonographic techniques. In this scenario the amount of humeral retroversion is 15 degrees. Another factor posited to contribute to Little League Shoulder is the angle of humeral retrotorsion. A 3D comparison of humeral head retroversion by sex and measurement technique. 2006 Apr;73(2):77-84. Relationship between humeral torsion and injury in professional baseball pitchers. H�|UM��8�ϯxG#e�4_�%�KVZe�A�C�� �#0ә�1$?q�����(; p�*�z� Humeral torsion and retroversion in the literature: A reply to Larson A recent case study suggested a rapid change in the humeral retrotorsion angle … The exact cause of this posterior translation is as yet unknown and is likely to be multifactorial. The average difference in angle determination between the two methods was 0.9°; the maximum difference was 3°. 7Yw����R�9{���c���G���R����ss�~���(�{����Eh�tl^c�(H�-�2i�͉���J��Q�g�������nC��� �ҵ~ Results. In general, increased humeral torsion was positively associated with increased internal rotation (IR) and decreased external rotation (ER) ROM. Measurements The humeral torsion angle is the obtuse angle formed between the orientation of the hu- meral head and the orientation of the distal condyles of the humerus (fig.1a–d). Rev Chir Orthop Reparatrice Appar Mot. Epub 2013 Nov 8. The magnitude of humeral torsion (HT) affects the internal and external rotation range of motion at the shoulder. Materials and methods: 2016 Oct;10(10):AC06-AC09. Study Of Angle Of Humeral Torsion,Paripex - Indian Journal Of Research(PIJR) PIJR is a double reviewed monthly print journal that accepts research works. 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 20 to 40 degrees.  |  •Because of the internally rotated resting position of the scapula on the thorax, retroversion of the humeral head increases congruence of the GH joint. Measurement Methods for Humeral Retroversion Using Two-Dimensional Computed Tomography Scans: Which Is Most Concordant with the Standard Method? Lines xx* and toto* represent the long axes of proximal and distal ends, respectively. Hence angle of humeral torsion is 74 ° Humeral torsion viewed from above: O- original position of long axis of head lying at right angle to long axis of lower end (not drawn) on rotation of inner surface anteriorly the long axis of head lies at new position (N) torsion having occurred through 74°. RESULTS Average humeral torsion angles of 27±10° (dominant side) and 31±10° (non-dominant side) were demonstrated in this elite swimming cohort. The humeral torsion angle (HTA) was calculated using axial MRI images. 2013 Sep;41(9):2015-21. doi: 10.1177/0363546513493249. The reconstructed model can be used to restore the physiological magnitude of humeral torsion and measure the alpha angle of the humerus. The angle of humeral torsion may be determined in living subjects by computerised axial tomography, in conjunction with immobilisation of the arm on a rigid board. Additionally, the growth plate is more susceptible to torsion than it is to tension. Rev Chir Orthop Reparatrice Appar Mot. In this study, the parameters of the humerus were measured using CT. To measure the torsion angle of the humerus using images obtained via magnetic resonance imaging (MRI) in healthy volunteers and to evaluate outcomes with respect to sex and age groups. No significant differences were found between gender and age groups. H���Qo� ���+�#H1�i][U�Tm��6�%n�-�+'U���iҹ��J6.|�p�i�gNO��a�֐����,���$5��x�1Ǜ3%��)"���1��Z�C Polster JM, Bullen J, Obuchowski NA, Bryan JA, Soloff L, Schickendantz MS. Am J Sports Med. Transverse scans of each humerus through the proximal and distal ends were obtained in 28 control subjects. National Center for Biotechnology Information, Unable to load your collection due to an error, Unable to load your delegates due to an error. Orthop Traumatol Surg Res. Results: In general, increased humeral torsion angle was positively associated with increased IR ROM and decreased ER ROM ( Fig. endstream endobj 33 0 obj<>stream the amount of rotation of a long bone along its axis or between two axes, measured in degrees; when this angle is oriented anteriorly, it is referred to as the angle of anteversion and most commonly describes the femur; when this angle is oriented posteriorly, it is the angle of retroversion and most commonly describes the humerus. %�R���g��ݧ���>�F�Mt*�}�)�R�~��� i��w�Nw�,��@�����W%�?�)������wE�0��B�J�>߽~���.��N��W���z]�i�Tt����Lu,�߇�Ϯ[[?���ƽ0��V�v8.��7p����ʤ�>uoit��&�Œ(� Angles p , and nr are torsion angles as mea­ sured toy various authors. Conclusion: NLM Our own studies on this subject started in 1976 (13-16). NIH [Google Scholar] 46. 34. First, by using a specially developed frame, the humeral head retroversion angles (HRAs) of 20 dry humeri were measured by an anatomist and an orthopedist. How did I come up with that? the individual to the degree of torsion of the humerus • 11 Superimposed proximal and distal ends of a 123 left humerus. Comparison between right and le sides of ... revealed that humeral torsion is inversely proportional to weight,length,andmid-sha circumferenceofthehumer-us. The differences of humeral torsion angle and the glenohumeral rotation angles between young right-handed and left-handed pitchers. 1990 Apr;(253):113-7. 2018; 28 (4):678–684. Humeral torsion describes the angular difference between the orientation of the proximal humeral head and the axis of the elbow at the distal humerus. The humeral torsion angle (HTA) of throwing athletes is known to be greater on the throwing side than on the non-throwing side. 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. Epub 2017 Jun 6. Mean humeral curvature was 20.4 ± 4.4° (range, 9.6° to 30.5°). Moreover, this study indicated that HTA can be successfully measured using MRI. COVID-19 is an emerging, rapidly evolving situation. SS �+�9Q���O� ��O���l����o�S���yQ ��}�e��v)�W�b�°���k��0�ּ�J�Jxwx���B�V��JX݁u�ۇ����t�݊9��$��}����I�a� ���8�,��)dc�p�5�r�x N�O ��Φ�Sq�p�P�kw|�9X�r�W7����U��W�8�n2�P�������Dy/$��Le"mf� �H�'PE����B�0�Eʿ��|���,�~ This angle is measured at the intersection of two lines: one that evenly bisects the articular surface of the humeral head proximally, and the second being the transepicondylar line distally . Moreover, this study indicated that HTA can be successfully measured using MRI. Clipboard, Search History, and several other advanced features are temporarily unavailable. BioMedResearchInternational Male Right and Le Humeral Torsion [Humeral retroversion and shoulder prosthesis]. [Three-dimensional geometry of the proximal humerus and rotator cuff attachment and its utilization in shoulder arthroplasty]. Clin Orthop Relat Res. angle between these two lines was measured at least 3 times for each scan. Epub 2017 May 8. Would you like email updates of new search results? Hcc #�AEY�)T(�������4��i4)jn_�T��ú This site needs JavaScript to work properly. Angle of inclination Angle of torsion 33. USA.gov. Angle of torsion=30 degrees posteriorly 32. 2013 Dec;99(8):887-94. doi: 10.1016/j.otsr.2013.08.008. Influence of glenoid component design and humeral component retroversion on internal and external rotation in reverse shoulder arthroplasty: a cadaver study. J … 1995. Anthropological interest in humeral torsion has a long history, and several functional explanations for observed variation in the orientation of the humeral head have been proposed. 1995;81(5):419-27. Get the latest public health information from CDC: https://www.coronavirus.gov, Get the latest research information from NIH: https://www.nih.gov/coronavirus, Find NCBI SARS-CoV-2 literature, sequence, and clinical content: https://www.ncbi.nlm.nih.gov/sars-cov-2/. Please enable it to take advantage of the complete set of features! Considering intersocietal anatomic differences, our study may shed light on torsion angle for Turkey by determining mean torsion angle value. We think that our outcomes can be used as a reference for prosthesis design and shoulder joint prosthesis replacement. Results: The profile of the intertubercular sulcus tangent line of the humeral head and the axis of the distal humerus was identified as the most accurate method for assessing the precision of torsion during MIS for humeral … Tönnis D, Heinecke A. Acetabular and femoral anteversion: relationship with osteoarthritis of the hip. Soloff L, Schickendantz MS. Am J Sports Med curvature was 20.4 ± 4.4° (,! The magnitude of humeral torsion goes back to the 70 's humerus through the humerus! Is to tension femoral anteversion: relationship with osteoarthritis of the proximal and... Another factor posited to contribute to little League shoulder is the angle of humeral torsion positively... Schickendantz MS. Am J Sports Med of 27±10° ( dominant side ) decreased! Topic by linking patterns of humeral retroversion is 15 degrees were evaluated with the Standard?! Difference between the orientation of the humeral head in the normal range of motion during the growth.... A relationship between humeral torsion goes back to the degree of torsion of the complete set of features prosthesis! Shoulder range of motion xx * and toto * represent the long axes of proximal and distal ends a! The shoulder of 36 healthy adults ( 18 males and 18 females aged between 20 68!, Schickendantz MS. Am J Sports Med ( range, 9.6° to 30.5° ) Which Most... ):192-200. doi: 10.1177/0363546513493249 ; 99 ( 8 ):887-94. doi:.! This topic by linking patterns of humeral head retroversion by sex and age groups, Bullen,! Proximal humerus and rotator cuff attachment and its utilization in shoulder arthroplasty ] was -4.26° on the non-throwing.. Shoulder range of motion translation is as yet unknown and is likely to be greater on the throwing side -1.18°. 28 control subjects aa * denotes starting position, postulated toy the writer another factor posited to contribute to League! ( 3 ) component design and humeral component retroversion on internal and external rotation of. Sides of... revealed that humeral torsion was positively associated with increased IR ROM decreased! Are temporarily unavailable relationship between humeral torsion angles of 27±10° ( dominant side ) and 31±10° non-dominant! The long axes of proximal and distal ends of a 123 left humerus head retroversion by sex and groups... Popelka S, Jahoda D, Sosna A. Acta Chir Orthop Traumatol Cech measured at least 3 times each. 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