Joint-Preserving Surgery for Hyperextension Deformity of the Hallux Interphalangeal Joint in a Patient with Rheumatoid Arthritis

Figure 2

Preoperative weight-bearing radiographs of the foot. (a) Anteroposterior view of the foot showing hallux valgus deformity and no clear space at the metatarsophalangeal joint. (b, c) Lateral view of the foot showing the destruction of the Chopart and subtalar joints, as well as misalignment of the hallux including elevation of the first metatarsal, plantar deviation of the proximal phalanx, and interphalangeal hyperextension. The two-way arrow indicates the distance between two dorsal cortices of the first and second metatarsals, indicating an elevated first metatarsal. The cross indicates the approximate center of the metatarsal head. Dotted lines show the naviculocuneiform and tarsometatarsal joints.

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(b)

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