MIRA2002 Study Guide - Final Guide: Axial Tilt, Navicular Bone, Metatarsal Bones

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Document Summary

Radiography of foot: trauma (minor + major, pathology, oa, ra, diabetic arthropathy, all age groups, theatre and ward. Oa + ra: dp (possibly with filter), dp oblique. Hallux valgus dp, dp oblique, lateral (sesamoid bones) Flat feet dp, dp obique, weight bearing lateral. Fb- dp (with cr 90 to cassette), lateral. Effect of lateral rotation: navicular tuberosity is shown in profile, there is an increase in the superimposition of the metatarsal bases. Effect of medial rotation: there is an decrease in the superimposition of the metatarsal bases. Medial aspect of foot 30-40 to cassette. Height of longitudinal arch affects the degree of rotation required for a dp oblique foot. A low longitudinal arch requires less obliquity (30) High arch requires more rotation than a flat arch. Dp assessment : 1st + 2nd intermetatarsal joints are closed, 2-5th intermetatarsal joints are open tuberosity of 5th metatarsal is well visualized.