Physiotherapy vs. capsular shift and physiotherapy in multidirectional shoulder joint instability |
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| Authors: | Rita M. Kiss Árpád Illyés Jenő Kiss |
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| Affiliation: | 1. Budapest University of Technology and Economics, Department of Structures, 1111 Budapest Bertalan Lajos u. 2, Hungary;2. Saint John’s Hospital, Department of Orthopedics and Traumatology, 1125 Budapest Diósárok u. 1-3, Hungary;1. Elite Sports Medicine, Connecticut Children’s Medical Center, 399 Farmington Avenue, Farmington, CT 06032, USA;2. University of Connecticut School of Medicine, Farmington, CT, USA;2. Orthopaedic Surgery, Hospital for Special Surgery, New York, NY;1. University of Calgary Sport Medicine Centre, Department of Surgery, Faculties of Kinesiology and Medicine Calgary, AB, Canada;2. Department of Surgery, University of Western Ontario, London, ON, Canada;3. Department of Orthopedic Surgery, University of British Columbia, Faculty of Medicine, Vancouver, BC, Canada;4. Department of Surgery, University of Manitoba, Faculty of Medicine, Winnipeg, MB, Canada;5. Department of Community Health Sciences, University of Calgary, Faculty of Medicine, Calgary, AB, Canada;6. Departments of Surgery and Community Health Sciences, University of Calgary, Faculty of Medicine, Calgary, AB, Canada;1. Shoulder and Elbow Unit, Joint Research, Amsterdam, the Netherlands;2. Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts, U.S.A.;3. Orthopaedic Department, Amphia Ziekenhuis, Breda, the Netherlands;4. Amsterdam University Medical Centres, Amsterdam, the Netherlands |
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| Abstract: | PurposeThe aim of the study was to compare the kinematic parameters and the on–off pattern of the muscles of patients with multidirectional instability (MDI) treated by physiotherapy or by capsular shift and postoperative physiotherapy before and after treatment during elevation in the scapular plane.ScopeThe study was carried out on 32 patients with MDI of the shoulder treated with physiotherapy, 19 patients with MDI of the shoulder treated by capsular shift and postoperative physiotherapy, and 25 healthy subjects. The motion of skeletal elements was modeled by the range of humeral elevation, scapulothoracic angle and glenohumeral angle, scapulothoracic (ST) and glenohumeral (GH) rhythms, and relative displacement between the rotation centers of the humerus and scapula. The muscle pattern was modeled by the on–off pattern of muscles around the shoulder, which summarizes the activity duration of the investigated muscles.ResultsThe different ST and GH rhythms and the increased relative displacement between the rotation centers of the scapula and the humerus were observed in MDI patients. The physiotherapy strengthened the rotator cuff, biceps brachii, triceps brachii, deltoid muscles, and increase the neuromuscular control of the shoulder joints. Capsular shift and physiotherapy enabled bilinear ST and GH rhythms and the normal relative displacement between the rotation centers of the scapula and humerus to be restored. After surgery and physiotherapy, the duration of muscular activity was almost normal.ConclusionThe significant alteration in shoulder kinematics observed in MDI patients cannot be restored by physiotherapy only. After the capsular shift and postoperative physiotherapy angulation at 60° of ST and GH rhythms, the relative displacement between the rotation centers of the scapula and humerus and the duration of muscular activity were restored. |
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