PMC7569254_01
Preoperative photograph. Right second toe with a flexion deformity of the proximal interphalangeal joint and hyperextension of the distal interphalangeal joint (boutonniere deformity).
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Examination of his right second toe revealed minimal swelling and flexion deformity at the PIP joint with associated hyperextension of the DIP joint (Fig. 1).
Radiographic examination. (a) Plain radiography and (b) computed tomography revealed no fracture or dislocation.
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The digit appeared normal under neurovascular examination and no fractures or dislocations were observed with plain radiography and computed tomography (Fig. 2).
Surgical findings. (a) The central slip is torn, and the lateral bands are displaced plantarly. (b) Forceps pinching the margin of the central band.
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There was no bony or articular damage (Fig. 3).
Surgical repair of the extensor mechanism and temporary pinning. (a) Before skin closure. (b) After skin closure.
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The central slip was repaired with a simple single-knot, and the lateral bands were recentralized (Fig. 4).