PERCUTANEOUS PLATING OF FRACTURES OF THE PROXIMAL HUMERUS: A PROSPECTIVE MULTI-CENTER CLINICAL TRIAL.
2008
Although new locking plates allows for secure fixation of osteoporotic fractures in the proximal humerus, extensive soft tissue dissection is needed for their insertion. We report on a prospective clinical trial of the first thirty patients treated with plating of the proximal humerus though a minimally invasive percutaneous approach. All fractures healed within the first 6 months with no avascular necrosis or axillary nerve injury. At the latest follow-up, the median Constant score was sixty-eight and the mean DASH score was twenty-seven. This study suggests that percutaneous plating can be a safe and effective method of fixation. To evaluate the safety and efficacy of minimally invasive plating of the proximal humerus using validated disease-specific measures. Percutaneous insertion of a locking proximal humerus plate is safe and produces good early functional and radiologic outcomes. Plate fixation of the proximal humerus fractures may now be more desirable with the use of a biological approach by limiting surgical insult and allowing accelerated rehabilitation. All fractures healed within the first six months with no loss of correction. Two reoperations were needed to remove intra-articular screws placed too long. No infection or avascular necrosis were seen. At the lastest follow-up, the median Constant score was sixty-eight points, with an age ajusted score of seventy-six. The mean DASH score was twenty-seven points. Only age was independantly predictive of both the Constant and DASH functional scores. During a period of one year, thirty patients were operated with use of the LCP proximal humerus plate (Synthes) through a 3cm lateral deltoid splitting approach and a second 2 cm incision at the deltoid insertion. The axillary nerve was palped and easily protected during insertion. Only two-part (N=22) and three-part impacted valgus type (N=8) were included in this study since they can be reduced indirectly thru this percutaneous technique. The average follow-up was thirteen months (eight to twenty months). All patients had the Constant and DASH evaluations.
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