[MR imaging of anatomical variants of ligaments, muscles and tendons at the ankle].
OBJECTIVE
To illustrate the MR imaging features of anatomical variants of ligaments, muscles and tendons at the ankle. MATERIAL AND METHODS. The MRI features of the typical anatomy of the ankle is first reviewed in order to better understand the appearance of anatomical variants. The features of those anatomical variants are reported based on data from the literature and from a retrospective study of 63 ankle MRI and/or MR-arthrography performed for chronic instability.


RESULTS
Ankle anatomical variants can be separated into 3 groups For each variant, we report the frequency, the differential diagnosis and the potential clinical consequence that may, at times, require a specific treatment.


CONCLUSIONS
Anatomical variants are important to consider because these structures can simulate disease and can sometimes be symptomatic.
Borne
J
J
Service de Radiologie Pavillon B, Hôpital Edouard Herriot, 69003 Lyon. js.borne@free.fr
Fantino
O
O
Besse
Jl
J
Clouet
Pl
P
Tran Minh
Va
V
D000843:Ankle Joint / Q000033:anatomy & histology*; D006801:Humans; D008023:Ligaments, Articular / Q000033:anatomy & histology*; D008279:Magnetic Resonance Imaging; D018482:Muscle, Skeletal / Q000033:anatomy & histology*; D013710:Tendons / Q000033:anatomy & histology*