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Biomedical subjects

E P Nance

Publications and source records attributed to E P Nance.

9 recordsLinked to original sources
PubMed1979

Volar plate fractures.

Rupture of the volar plate of the proximal interphalangeal joint, usually secondary to hyper-extension injury, may be accompanied by a radiographically evident avulsion fracture at the base of the middle phalanx. Findings were reviewed in 55 patients with 58 cases of volar plate fracture. This fracture should be specifically looked for in a patient with the typical history, since it may be the only radiographic evidence of a potentially disabling injury.

Adolescent↗
PubMed1979

The opisthion on the lateral radiograph of the cervical spine.

Ten adult dry skulls were radiographed in the lateral projection to evaluate the appearance of the opisthion, the posterior margin of the foramen magnum. The opisthion was seen on all 10 skulls and its position was confirmed by outlining it with barium paste. In cross section, it is a teardrop-shaped structure continuous with the internal occipital crest. A beak-shaped shadow anterior to the opisthion was also examined with the barium technique. It is an overlap shdow formed by the interior margin of the foramen magnum and the inferior border of the occipital bone on the same side. In a review of 50 random radiographs of the cervical spine, the opisthion was identified on 42 (84%) and the beak-shaped overlap shadow was seen on 28 (56%). The spinolaminal line, which delineates the posterior margin of the cervical spinal canal, was an unreliable indicator of the position of the opisthion in 17 (40%) of the 42 cases in which the opisthion could be identified.

Adult↗