Abstract
OBJETIVOS: Avaliar a retroversão da cabeça do úmero em jogadores de handebol e sua relação com a movimentação do ombro. MATERIAIS E MÉTODOS: Foram avaliados 17 jogadores profissionais por meio de exame físico e avaliação radiográfica, para se determinar o ângulo de retroversão e, sua relação com o arco de movimento. O mesmo foi realizado num grupo controle. RESULTADOS: A diferença entre a média do ângulo de retroversão da cabeça do úmero do membro dominante e não dominante foi de 3,06°. Entre eles, aqueles que tiveram um início de treino antes dos 10 anos, apresentaram uma média desse ângulo de 36,29°, enquanto que aqueles que iniciaram acima dessa idade tinham uma média de 26,6° (p< 0,05). A média da rotação lateral do membro dominante, cujo ângulo de retroversão era maior que 30°, foi 112,27°, e naqueles, em que o ângulo era inferior ou igual a 30°, a média foi 95,10° (p<0,05). CONCLUSÃO: Houve uma diferença estatística na retroversão quando comparamos os ombros dominantes e não dominantes. Os atletas que começaram a jogar antes dos 10 anos apresentaram, estatisticamente, uma maior retroversão. Há uma relação estatística entre o aumento da retroversão com o aumento da rotação lateral.
Highlights
In athletes practicing sports involving pitching, the shoulder joint is strongly demanded, especially during pitch preparation phase, in which the athlete makes abduction and lateral rotation movements . [1,2,3] This makes these athletes to experience adjustments, both of soft tissues and bone structures such as: anterior capsule stretching, posterior capsule hypertrophy and shortening, and increased retroversion of humeral head
Humeral head retroversion in children is known to be more significant than it is in adults, and, during growth phase, it experiences a de-rotation process, to what happens on hip, having a progressive decrease of 65o in average, resulting in humeral head retroversion of 25 - 35°in adults . [10] The objective of this study is to assess humeral head retroversion on the dominant side of a group of professional handball athletes and compare it to the non-dominant side, as well as to a control group, in addition to evaluate its influence on lateral and medial rotation movements
After a thorough shoulder examination, X-ray images were taken of the humerus at semi-axial plane for measuring the humeral head retroversion angle by the method described by Öztuma et al[12], with patient at orthostatic position, shoulder 90o flexed and 20o abducted, with forearm resting on the film and the beam projected from posterior to anterior, perpendicularly to the film. (Figure 3)
Summary
In athletes practicing sports involving pitching, the shoulder joint is strongly demanded, especially during pitch preparation phase, in which the athlete makes abduction and lateral rotation movements . [1,2,3] This makes these athletes to experience adjustments, both of soft tissues and bone structures such as: anterior capsule stretching, posterior capsule hypertrophy and shortening, and increased retroversion of humeral head. [1,2,3] This makes these athletes to experience adjustments, both of soft tissues and bone structures such as: anterior capsule stretching, posterior capsule hypertrophy and shortening, and increased retroversion of humeral head. Several studies have documented those adjustments, the increased humeral head retroversion and its correlation with lateral rotation increase . [10] The objective of this study is to assess humeral head retroversion on the dominant side of a group of professional handball athletes and compare it to the non-dominant side, as well as to a control group, in addition to evaluate its influence on lateral and medial rotation movements Humeral head retroversion in children is known to be more significant than it is in adults, and, during growth phase, it experiences a de-rotation process, to what happens on hip, having a progressive decrease of 65o in average, resulting in humeral head retroversion of 25 - 35°in adults . [10] The objective of this study is to assess humeral head retroversion on the dominant side of a group of professional handball athletes and compare it to the non-dominant side, as well as to a control group, in addition to evaluate its influence on lateral and medial rotation movements
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
