Dorsal arthrodesis of thoracic spine and effects on thorax growth in prepubertal New Zealand white rabbits.

Study Design: Dorsal arthrodesis of thoracic spine in a prepubertal New Zealand White rabbit model.

Objective: Evaluating the consequences of dorsal arthrodesis on the growth of the spine, sternum, and thorax in prepubertal rabbits, through the study of CT scans.

Summary Of Background Data: Vertebral arthrodesis in the treatment of progressive idiopathic scoliosis in prepubertal patients is not ideal, but is still a choice in treating major deformities of the spine.

Neurovascular complications and severe displacement in supracondylar humerus fractures in children: defensive or offensive strategy?

Out of 210 children suffering from severely displaced supracondylar fractures, 76 (36%) presented with immediate neurovascular complications: 47 (22%) were neurological, 16 (8%) vascular and 13 (6%) both. Injury to two nerves simultaneously was observed in six patients. The median nerve was affected in 28 cases, the ulnar nerve in 25 and the radial nerve in 13.

Cytogenetic findings in a case of dedifferentiated chondrosarcoma.

Cytogenetic analysis of a case of dedifferentiated chondrosarcoma with a malignant fibrous histiocytoma (MFH) component revealed a near-triploid karyotype with multiple copies of chromosome 7, deletion of chromosome arm 9p, and a derivative chromosome 19 [add(19p)] in each metaphase. Whereas numerical anomalies of chromosome 7 have been frequently reported in chondrosarcoma, deletion 9p and add (19p) have been observed in MFH. A putative MFH tumor suppressor gene could be present in a critical region on chromosome bands 9p21~p22.