Inner Synovial Membrane Footprint of the Anterior Elbow Capsule: An Arthroscopic Boundary

Figure 6

The axis of the anterior synovial membrane’s insertion was rotated medially in 81.8% of cases. The arches were clearly observed to have a valgus axis relative to the axis perpendicular to the transepicondylar line, which is a close approximation of the humeral shaft axis.