Presentation
Right ring finger pain post fall with obvious deformity.
Patient Data
Age: 50 - 55
Gender: Female
From the case:
Proximal interphalangeal joint dislocation
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Medial dislocation of the ring finger PIP joint with marked medial angulation.
No obvious fracture seen.
Incidental bone island in the head of the 5th metacarpal.
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Normal alignment following reduction.
A small crescent of cortical bone representing an avulsion fracture off the medial condyle of the proximal phalanx is displaced slightly medially.
Case Discussion
Interphalangeal joint dislocation is often caused by direct blow to the end of finger.
X ray post reduction is performed to confirm proper alignment of the bone and to diagnose associated fractures.
In this case, the fracture is occult on the initial radiograph.