This study will compare the effect of manipulated vs. non-manipulated feedback during the rehabilitation of individuals with disability due to stiff shoulder following multiple trauma. This will be accomplished using the state-of-the-art real-time motion capture technology.

In this intervention, comparative study, 30 individuals with stiff shoulder following fracture to the proximal humerus (4 weeks to 6 months following the injury) will be treated at the Gait and Motion Laboratory at the Hadassah Medical Center in Jerusalem. Each subject will undergo a 12-session treatment (2-3 times a week, 30 minutes per session). In each session, reflective markers will be placed on the upper or lower body of the patient. Ten fast infra-red cameras will detect the movement of the patient and provide real-time feedback when obtaining a correct movement pattern, as instructed by the therapist, pretrial. The motion capture system will provide visual and auditory feedback of success, via a large screen, located on the wall. This could be manipulated so that the feedback is provided for a slightly higher range than instructed by the therapist.

The subjects will be randomly divided into two groups. One group will receive the non-manipulated feedback treatment for 6 sessions and then the manipulated feedback treatment for the remaining 6 sessions and vice versa for the second group. The shoulder passive and active range of motions, pain and activity levels will be tested 3 times: at baseline, following 6 and 12 sessions. A satisfactory questionnaire will be filled out by each patient twice, following 6 and 12 sessions.

The study will test for no differences in the overall progress of the patients during the 12-session rehabilitation period. The study will further test for differences in all outcome measures between the manipulated and non-manipulated treatment sessions.

Inclusion Criteria:

• Restricted shoulder motion (up to 90 degrees in abduction and flexion) following proximal humerus fracture, 4 weeks to 6 months following injury, without rotatory cuff tear
• Normal or corrected eyesight and hearing.

Exclusion Criteria:

• Neurological deficiencies that restrict upper limb.
• Previous injury to the shoulder