Influence of volar margin of the lunate fossa fragment fixation on distal radius fracture outcomes: A retrospective series

Figure 1 Measured radiological parameters. SLA: Scapholunate angle; RLA: Radiolunate angle; CLA: Capitolunate angle; ERLF: Effective radiolunate flexion.

Figure 2 Evaluation of the disability. A: Distal radius fracture with effective radiolunate flexion (ERLF) < 25; B: Distal radius fracture with ERLF > 25. ERLF: Effective radiolunate flexion; VMLF: Volar margin of the lunate fossa.

Figure 3 A 39-year-old man from the unfixed group with distal radius fracture with volar margin of the lunate fossa fragment due to a traffic accident. A and B: Preoperative X-ray and computed tomography; C: At 1 d posttrauma, open reduction and internal fixation with a volar locking plate and screws were performed. Immediately postoperatively, the X-ray showed a radiolunate angle (RLA) of -16° and effective radiolunate flexion (ERLF) of 19°; D: At 1 mo postoperatively, the X-ray showed that the RLA was -38°, and the ERLF was to 39°; E: This appearance persisted even after plate and screw removal at 1 year postoperatively. The Mayo score was 65, and the disabilities of the arm, shoulder, and hand score was 30.8.