BACKGROUND Increased external rotation and decreased internal rotation have been noted to occur progressively in the throwing shoulder of baseball pitchers. HYPOTHESIS Proximal remodeling of the humerus contributes to the rotational asymmetry between shoulders in pitchers. STUDY DESIGN Descriptive anatomic study. METHODS Both shoulders of 19 male college baseball pitchers were evaluated a...

Background Specific information to guide clinical practice is lacking for the effects of arthroscopic release on bone and joint deformities, as well additional benefits tendon transfer, in children with brachial plexus birth injury. The aims this study were (1) evaluate changes shoulder mobility deformity, (2) effect without transfer same outcomes, (3) perioperative long-term complications. Met...

Retroversion of the adult acetabulum following a previous Legg-Calvé-Perthes disease (LCPD) is found in 30-40% of the patients. It is known that in LCPD there may also be morphologic changes in the nonaffected controlateral acetabulum. We investigated the prevalence of retroversion of the contralateral acetabulum in a group of adult patients with a history of LCPD. We found this morphology in 1...

BACKGROUND Surgical interventions at the shoulder may alter function of the shoulder complex. Clinically, the outcome can be assessed by universal goniometry. Marker-based motion capture may not resemble these results due to differing angle definitions. METHODS The clinical inspection of bilateral arm abduction for assessing shoulder dysfunction is performed with a marker based 3D optical mea...

This study examined the relationship between the cross-over sign and the true three-dimensional anatomical version of the acetabulum. We also investigated whether in true retroversion there is excessive femoral head cover anteriorly. Radiographs of 64 hips in patients being investigated for symptoms of femoro-acetabular impingement were analysed and the presence of a cross-over sign was documen...

BACKGROUND Patients with incomplete recovery from obstetric brachial plexus injury (OBPI) usually develop secondary muscle imbalances and bone deformities at the shoulder joint. Considerable efforts have been made to characterize and correct the glenohumeral deformities, and relatively less emphasis has been placed on the more subtle ones, such as those of the coracoid process. The purpose of t...