Musculoskeletal Key

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…

Structural etiologies Biomechanical etiologies Systemic etiologies Other etiologies Short first metatarsal Pronating pes plano valgus Neuromuscular diseases Hereditary factors Long first metatarsal Inflammatory arthritides Shoegear Degenerative arthritides Female gender Ligamentous…