Scaphoid nonunion and flexor pollicis longus tendon rupture |
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Authors: | Saitoh S Hata Y Murakami N Nakatsuchi Y Seki H Takaoka K |
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Affiliation: | Department of Orthopaedics, Shinshu University School of Medicine, Asahi, Matsumoto City, Japan. |
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Abstract: | Four patients presented with a rupture of the flexor pollicis longus tendon that was associated with a longstanding scaphoid nonunion. A radiocarpal arthrosis was present in 3 of the 4 patients and a dorsiflexed intercalated segment instability deformity was also seen in 3 of the 4 patients. Three patients underwent surgery consisting of an osteosynthesis with an iliac bone graft for the scaphoid nonunion and a palmaris longus tendon graft for the ruptured flexor pollicis longus tendon. An osseous union of the scaphoid and a functional active range of motion of the thumb interphalangeal joint (33 degrees on average) was attained in all 3 of the patients treated surgically. Preoperative radiologic examinations and intraoperative findings suggest that the volarly protruding distal scaphoid segment is the cause of the rupture. |
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Keywords: | Scaphoid nonunion flexor pollicis longus tendon magnetic resonance imaging anterior interosseous nerve palsy |
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