Arthroscopic Interposition Tendon Arthroplasty for Stage 2 Scapholunate Advanced Collapse

Area of Science:

• Orthopedic surgery
• Wrist reconstruction
• Musculoskeletal disorders

Background:

• Scapholunate advanced collapse (SLAC) is a degenerative condition affecting wrist function.
• Stage 2 SLAC involves progressive carpal instability and pain.
• Current treatment options aim to restore wrist stability and function.

Purpose of the Study:

• To evaluate the functional outcomes of arthroscopic interposition tendon arthroplasty (AITA) for stage 2 SLAC.
• To analyze improvements in range of motion, grip strength, and pain levels post-AITA.
• To assess patient satisfaction following the procedure.

Main Methods:

• Retrospective analysis of 14 patients with stage 2 SLAC who underwent AITA.
• Preoperative and postoperative assessment of range of motion, grip strength, VAS, DASH score, and radiographic parameters.
• Minimum follow-up of 24 months.

Main Results:

• Significant improvements observed in wrist extension, radial deviation, grip strength, VAS, and DASH scores (P < .001).
• Radiographic measures including scapholunate angle and scaphoid fossa-to-scaphoid space showed significant improvement (P < .001).
• No significant improvement in flexion, ulnar deviation, or flexion-extension arc; 90% patient satisfaction.

Conclusions:

• Arthroscopic interposition tendon arthroplasty is an acceptable treatment for stage 2 SLAC.
• The procedure demonstrates potential for preserving motion and achieving satisfactory functional outcomes.
• AITA effectively reduces pain and improves overall wrist function in patients with stage 2 SLAC.