Osteonecrosis of the metatarsal head with exuberant periostitis.

Idiopathic necrosis of the metatarsal head is unusual in adulthood. We report five cases of an atypical necrosis of the metatarsal head with a solid periosteal reaction in adults. Different imaging features are reported and diagnosis difficulties are highlighted.

Sausage-like toe and heel pain: value for diagnosing and evaluating the severity of spondyloarthropathies defined by Amor's criteria. A retrospective study in 161 patients.

Aim: To evaluate the frequency of sausage-like toe and talalgia in spondyloarthropathies diagnosed by the 12 items of Amor's criteria; to study the frequency of a diagnosis which would be impossible without these two symptoms; and to study the correlations between Amor's criteria score and the clinical and biological symptoms in the presence of both of these.

Methods: Retrospective study of 161 cases (age, 38.8 +/- 13.