Case: An exceptional event occurred during gradual extension with an external fixator for recurrent small finger Dupuytren flexion deformity. A massive proximal interphalangeal joint distraction arose, possibly because of the center of rotation misalignment and a hasty patient-controlled correction. The device was removed, and a plaster splint protected the finger for 5 days to prevent dislocation of the unstable joint. It relocated with an acceptable clinical result.
Conclusion: Gradual extension of Dupuytren contractures with an external fixator may induce severe joint distraction by eccentric placement of the device. On the other hand, the good outcome of this case report may inspire further research on controlled joint distraction in hooked deformity.
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