[Supernumerary muscle on the dorsal surface of the hand. A case report].

The authors report a case of a painful wrist related to a "Manieux muscle" of the dorsal aspect of the hand. Manieux muscles are very rare supernumerary muscles first described by anatomists at the beginning of the 20th century. To our knowledge no symptoms related to this condition have been previously reported.

[The odontoid bone. Apropos of a surgically treated case].

An odontoid bone was detected in an adult patient after injury to neck, with secondary appearance of disorders related to C1-C2 instability that disappeared after posterior C1-C2 arthrodesis. The odontoid bone is a rare anomaly of debatable origin. Current pathogenicity theories are discussed.

[Paraplegia caused by closed injury of the dorso-lumbar joint without apparent primary vertebral lesion].

Paraplegia due to closed trauma of the lumbo-dorsal junction, without bony lesions are exceptional. The author reports a case due to rupture of the posterior ligements, without vertebral displacement on the first films, but which became complicated secondarily by dislocation, which it was necessary to reduce by open operation. It thus seems that there occurred during this accident a marked vertebral displacement reponsible for paraplegia which became spontaneously reduced thanks to muscle contraction, but which recurred secondarily following muscular relaxation.

[Post-traumatic fat embolism. Apropos of 272 French cases].

Pulmonary migration of fat globules form a fracture, although anatomically very frequent, rarely gives rise to clinical signs or symptoms. This pathological and clinical entity of fat embolism following trauma, remained for long undiagnosed in France, as the first published cases date from 1949 only; the syndrome is not, however, exceptional for, since 1949, 272 cases have been described including 42 which are published here. Clinical fat embolism affects, above all, adults with fracture of the femoral diaphysis placed in continuous extension.