Functional Recovery After Hip Resurfacing and Rehabilitation

in Journal of Sport Rehabilitation
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Context:

Surface replacement of the hip is aimed especially at active patients, and it seems to achieve optimal functional results in a short time if associated with a tailored rehabilitation protocol.

Objective:

To assess the functional outcome in a group of active patients after hip resurfacing.

Design:

Clinical measurement and controlled laboratory study in a case series.

Setting:

Gait-analysis laboratory.

Participants:

8 patients and a control group of 10 subjects.

Interventions:

Patients treated with Birmingham hip-resurfacing system and a tailored rehabilitation protocol

Main Outcome Measures:

Clinical assessment (Harris Hip Score [HHS]) and instrumented gait analysis including muscular electromyographic assessment. Patients were assessed preoperatively and at 3 and 9 mo follow-up after surgery.

Results:

HHS showed a significant increase from the baseline to 3- (P = .008) and 9-month (P = .014) follow-up; 5 patients returned to sport. Gait pattern in the presented case series of patients improved substantially 3 mo postoperatively, and minimal further changes were present 9 months postoperatively. Residual abnormalities of time-distance and hip-kinematics parameters were consistent with a slow gait. A complete restoration of the muscle-activation pattern during gait was achieved.

Conclusion:

Hip resurfacing associated with a rehabilitation protocol based on the characteristics of the implant provides excellent clinical and functional outcome, especially for very active patients.

The authors are with the Rizzoli Orthopedic Institute, Bologna, Italy.