Fig. 6.1 (a) Mapping of the CORA for first metatarsal transverse plane deviation component of HAV deformity. The metatarsal has no intrinsic angular deformity but is deviated from its normal…
Fig. 13.1 (a) A lateral radiograph projection demonstrating a patient who suffers from TMT-1 hypermobility/instability. Note the dorsal cortex of the first metatarsal in comparison to the second metatarsal leading…
Indications Stage II–IV end-stage arthritis of first MTPJ (HL/HAV) End-stage arthritis of the hallux IPJ or hallux IPJ fusion Good neurovascular supply Adequate soft tissue coverage Adequate bone length Elderly…
Fig. 15.1 (a) A 15-year-old female who reached skeletal maturity . Note the large intermetatarsal angle, diastasis between the base of the first and second metatarsal and the medial and…
Author Number Pre-IMA Post-IMA Change in IMA Sung et al. [83] N = 58 14 9.7 4.3 Pydah et al. [70] N = 69 13.1 8.6 4.5 Goucher and Coughlin…
Fig. 11.1 (a) A longitudinal capsulotomy is made at the dorsolateral part of the first metatarsophalangeal joint (white line). (b) The articular surface of the lateral sesamoid is observed after…
Fig. 7.1 In the normal state, the first metatarsal is straight; therefore the anatomic axis of the first metatarsal (mid-diaphysis bisection) is collinear with the mechanical axis (center of MTPJ…
Fig. 5.1 (a) Classic AP angles: 1 metatarsal 1–2 angle(IM angle), 2 hallux valgus angle, 3 distal metatarsal angle (proximal articular set angle), 4 distal articular set angle, 5 metatarsus…
Fig. 2.1 Medial cuneiform. (a) Posterior surface. (b) Medial surface. (c) Lateral surface. (d) Inferior surface. (e) Superior surface The First Metatarsal The first metatarsal is the shortest and strongest…
Fig. 10.1 (a) Shortening of the first ray after inadequate correction with chevron bunionectomy. (b) Revisional hallux valgus correction with opening base wedge osteotomy to restore length to the medial…
