Hallux Valgus and Hallux Rigidus: MRI findings

The purpose of this article is to describe fire MR findings of Hallux Valgu s (HV) and Hallux Rigidus (HR). Twenty-four patients (11 with HV, 4 with HR , and 9 with both HV and HR) were studied at 1.5 Tesla MRI. Two separate ob servers evaluated the first ray blindly for the following signs: sesamoid p osition, sesamoid proliferation, hypertrophy of the median eminence, presen ce of a lateral facet, presence of an adventitial bursa, shape of the first metatarsal head, relative length of the first metatarsal, joint space loss , osteophytes (dorsalor lateral), marrow edema, geodes, subchondral scleros is, intra-articular ossicle, and pes planus. The most common findings obser ved in HV were a hypertrophic medial eminence (95%1), sesamoid proliferatio n (90%) and adventitial bursitis (70%). The most common findings observed i n HR were osteophytes (77% and 69%), geodes, and marrow edema. We conclude that traditional routine radiograph signs of HV and HR may be applied to MR images. (C) Elsevier Science Inc., 2000.