Related Experiment Videos
Scaphotrapeziotrapezoid fusion: long-term follow-up study
Akio Minami1, Hiroyuki Kato, Naoki Suenaga
1Department of Orthopaedic Surgery, Hokkaido University School of Medicine, Kita 15-Jo, Nishi 7-Chome, Kita-ku, Sapporo 060-8638, Japan.
Summary
Scaphotrapeziotrapezoid (STT) fusion shows long-term effectiveness for Kienböck
Area of Science:
- Orthopedic Surgery
- Hand and Wrist Surgery
- Musculoskeletal Research
Background:
- The long-term effectiveness of scaphotrapeziotrapezoid (STT) fusion remains debated.
- Indications for STT fusion include Kienböck's disease, isolated STT arthrosis, and trapezium dislocation.
Purpose of the Study:
- To evaluate the clinical and radiological outcomes of STT fusion.
- To assess the long-term effectiveness of STT fusion in patients with Kienböck's disease and isolated STT arthrosis.
Main Methods:
- Retrospective evaluation of 30 STT fusions in 30 patients.
- Average follow-up of 84 months.
- Simultaneous procedures included excisional arthroplasty of the lunate for Kienböck's disease.
Main Results:
- STT fusion achieved uneventful healing in an average of 11.2 weeks.
- Significant improvements in wrist range of motion (84% extension, 91% flexion) and grip strength (18 kgf to 27 kgf).
- 26 patients returned to previous activities; 5 experienced postoperative pain, and 4 were dissatisfied.
- Complications included radioscaphoid arthroses (27%) and trapeziometacarpal arthrodeses (17%).
Conclusions:
- STT fusion demonstrates effectiveness for Kienböck's disease and isolated STT arthrosis.
- Despite complications like radioscaphoid arthrosis, functional outcomes are favorable.