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Extensor indicis proprius transfer for rupture of the extensor pollicis longus tendon
P A Magnussen1, F J Harvey, M A Tonkin
1Royal North Shore Hospital, Sydney, New South Wales, Australia.
The Journal of Bone and Joint Surgery. British Volume
|September 1, 1990
Summary
Extensor indicis proprius tendon transfer effectively restores thumb extension after extensor pollicis longus rupture. This reliable surgical technique provides good long-term results with minimal complications.
Area of Science:
- Orthopedic Surgery
- Hand Surgery
- Reconstructive Surgery
Background:
- Rupture of the extensor pollicis longus tendon can significantly impair thumb function.
- Restoring thumb extension is crucial for overall hand dexterity and function.
Purpose of the Study:
- To evaluate the long-term outcomes of extensor indicis proprius tendon transfer for extensor pollicis longus tendon rupture.
- To assess the functional recovery and strength of thumb extension following this surgical procedure.
Main Methods:
- Retrospective review of 21 patients with 22 extensor pollicis longus ruptures.
- Analysis of outcomes at a mean of 5.3 years post-transfer of the extensor indicis proprius tendon.
- Objective measurements of extension and flexion deficits, and hand strength using pressure gauges.
Main Results:
- 19 out of 21 transfers (90.5%) yielded good results, with two fair results.
- Mean extension deficit was 1.4 cm, and mean flexion deficit was 0.6 cm.
- Transfer strength was 51% of the uninjured extensor; index finger extension strength was 49% of normal, with no functional loss.
Conclusions:
- Extensor indicis proprius tendon transfer is a simple, reliable procedure for extensor pollicis longus rupture.
- The technique provides satisfactory long-term thumb extension with few complications.
- Independent index finger extension is preserved, with acceptable strength reduction.