Loading of the Index Metacarpal After Trapezial and Partial Versus Complete Trapezoid Resection

The addition of a partial trapezoid resection performed at the time of trapezial resection does not affect proximal migration of the second metacarpal. When a complete trapezoidectomy is performed at the time of trapezial excision, however, the loading characteristics of the index metacarpal do change statistically significantly, although the magnitude of that change is only approximately 1 mm. Further testing will be necessary to elucidate the biomechanical effects of a partial trapezoid resection in conjunction with a trapezial resection on the second metacarpal in other planes.