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Posterior interosseous nerve entrapment
5%
73/1421
Extensor pollicis longus rupture
84%
1200/1421
Extensor pollicis longus entrapment
6%
88/1421
Distal radius malunion
1%
14/1421
Intersection syndrome
2%
31/1421
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According to the referenced article by Jupiter and Fernandez, the most common scenario of extensor pollicis longus rupture after a distal radius fracture is when the fracture is non or minimally displaced. The hypothesis is that the rupture happens at an area of relative hypovascularity and healing callus can aggravate this area, leading to a degenerative tear. Hove et al reported an incidence of delayed tendon rupture after distal radius fracture of 0.3 percent. In their series of 18 extensor pollicis longus tendon ruptures, 15 were treated with tendon transfers. They reported good results: nearly 100% patient satisfaction, all patients were able to elevate the thumb to the level of the palm, and full independent index finger movements.
4.2
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