Proprioception of the shoulder joint after surgical repair for Instability: a long-term follow-up study.

Abstract

BACKGROUND: Proprioceptive capabilities play an important role in stability of the shoulder joint. HYPOTHESIS: Decreased proprioceptive capabilities can improve by surgical repair of shoulder instability. STUDY DESIGN: Prospective long-term study. METHODS: The proprioceptive capabilities of 14 patients with recurrent anterior shoulder instability were examined preoperative and with a minimum follow-up of 5 years postoperative using the angle reproduction test. The patients' data were compared to a healthy control group. RESULTS: The joint position sense improved significantly in abduction, flexion, and rotation (P <.05). The preoperative difference from the target joint position was 9.3 degrees (SD, 4.6 degrees for the summarized positions in abduction, 9.1 degrees (SD, 4.5 degrees in flexion, and 10.1 degrees (SD, 5.1 degrees in rotation. Postoperatively, it improved to 5.6 degrees (SD, 2.9 degrees in abduction, 5.6 degrees (SD, 2.7 degrees in flexion, and 5.0 degrees (SD, 1.8 degrees in rotation. The joint position sense of the uninvolved contralateral shoulder improved too. CONCLUSIONS: Five years after surgical repair for shoulder instability, the joint position sense improved significantly, to a level of normal, healthy shoulders.

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