Role of the juncturae tendinum in preventing radial subluxation of the extensor communis tendons after ulnar sagittal band rupture: a cadaveric study.

Background. Radial subluxation of the extensor communis tendons at the metacarpophalangeal (MCP) joints is a rarely reportedvinjury. These injuries have proved difficult to reproduce in cadaveric studies and have a low biomechanical likelihood of occurrence due to the ulnar direction of pull of the extensor communis tendons.