Loss of proprioception following an anterior cruciate ligament (ACL) injury has been well documented. We evaluated proprioception in both the injured and the uninjured limb in 25 patients with ACL injury and in 25 healthy controls, as assessed by joint position sense (JPS), the threshold for the detection of passive movement (TDPM) and postural sway during single-limb stance on a force plate. There were significant proprioceptive deficits in both ACL-deficient and uninjured knees compared with control knees, as assessed by the angle reproduction test (on JPS) and postural sway on single limb stance. The degree of loss of proprioception in the ACL-deficient knee and the unaffected contralateral knee joint in the same patient was similar. The TDPM in the injured knee was significantly higher than that of controls at 30° and 70° of flexion. The TDPM of the contralateral knee joint was not significantly different from that in controls. Based on these findings, the effect of proprioceptive training of the contralateral uninjured knee should be explored.

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Circumferential capsulectomy with aggressive mobilization of the hip can correct the deformities associated with this condition, although long-term results are uniformly disappointing with regard to return of hip joint motion in cases of late presentation.

The serum copper levels of 46 elderly patients with fractures of the femoral neck were assayed and found to be significantly lower than those of a group of controls matched for age and sex. These findings are consistent with nutritional copper deficiency which may contribute to the development of fractures by reducing bone strength.

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