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Degenerative arthritis of the first metatarsophalangeal joint was initially described by Davies-Colley" in 1887. One year later Cotterill coined the term hallux rigidus. The gradual onset of pain and limitation of dorsiflexion at the metatarsophalangeal joint Mzlz* l 7 s Z 9 is characteristic of the disease process, although often there may be a normal range of plantar flexion.21 ETIOLOGYThe degenerative process has been attributed to numerous causes. Poor foot-~e a r ,~~~~ a long narrow ~o o~,~,~~J~ pronated feet,z*7,1z,17,1M, 19rz9 osteochondritis dissecans , 1 3 , 2 0 * 2 1 a long first metatarsal , 2 , z 9 * 3 1 hyperextension of the first metatarsal , 3 * 1 7 3 z 1 an imperfect ball-and-socket relationship of the first metatarsophalangeal artic~lation,~ abnormal gait,z obesity,12 trauma,#. 12, z6,35 sex ,3, 26, z9, 30 and occupation have all been associated with hallux rigidus. McMasteP believes that either acute or chronic trauma could produce an osteochondral fracture leading to the eventual *

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