Certified Hand Therapist (CHT) Practice Exam

The oblique retinacular ligament is a significant structure in the anatomy of the finger. It primarily connects the lateral bands, which are part of the extensor mechanism, to the volar plate, which is a fibrocartilaginous structure at the base of the proximal phalanx. This ligament plays a crucial role in the coordination of finger movement, particularly in facilitating the extension of the distal phalanx while simultaneously allowing for flexion at the proximal interphalangeal joint (PIP). By connecting these two structures, the oblique retinacular ligament helps in stabilizing and efficiently transferring forces during hand movements. The relationship between the lateral bands and the volar plate is essential for proper finger function, especially during grasp and manipulation tasks.