From the case:
Shepherd crook deformity
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Info
Shepherd's crook is a curved stick with a semi-circular grip.
Attribution: Auckland War Memorial Museum
Author: unknown
Modification: cropping and rotation with slight image enhancement
Original file: https://commons.m.wikimedia.org/wiki/File:Crook,_shepherd%27s_(AM_1958.105.1-3).jpg
Licence: CC BY 4.0
Case Discussion
Shepherd crook deformity implies to a coxa varus angulation of the proximal femur, seen in fibrous dysplasia of the lower limb and a few other disorders such as Paget disease and osteogenesis imperfecta.
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