Dorsal Radiocarpal Ligaments, Posterior View

Description

Arising from the dorsal aspect of the distal radius, the dorsal radiocarpal ligaments sweep distally and ulnarly across the posterior wrist to blend with the dorsal capsule over the proximal carpal row. Beneath these oblique fibrous bands, the scaphoid and lunate sit proximal and radial, while the triquetrum lies more ulnar and slightly distal, with the capitate centered in the distal row. Distal to the carpus, the metacarpal bases align in a gentle transverse arc and continue into the proximal phalanges. Blue accenting at the joint lines clarifies the radiocarpal and midcarpal articulations. Dorsal radiocarpal ligament anatomy matters because it forms a primary dorsal checkrein against palmar translation of the carpus and guides coupled motion between the scaphoid, lunate, and triquetrum during flexion and extension. In wrist trauma, swelling and pain over the dorsum can reflect capsuloligamentous injury patterns that coexist with scapholunate dissociation, and appreciating the ligament’s oblique course helps explain why certain instabilities present as a dorsal intercalated segment instability pattern. Surgeons also use these dorsal capsular planes during dorsal approaches for scapholunate repair, proximal row carpectomy, and wrist arthroscopy portal placement. Small structure, big consequences. Use this posterior ligament-focused plate in gross anatomy labs, hand surgery teaching files, and orthopedic or radiology publications discussing dorsal wrist instability, scapholunate injury, or post-traumatic radiocarpal mechanics. It also fits well in patient-facing education when explaining dorsal wrist sprain versus deeper carpal ligament disruption. Anatomical accuracy verified by SciePro's Medical Advisory Board.