spondylolysis

spondylolysis

 [spon″dĭ-lol´ĭ-sis]

the breaking down of a vertebra. adj., adj spondylolyt´ic.

spon·dy·lol·y·sis

(spon'di-lol'i-sis),

Degeneration or deficient development of a portion of the vertebra; commonly involves the pars interarticularis, which can result in a spondylolithesis.

[spondylo- + G. lysis, loosening]

spon·dy·lol·y·sis

(spon'di-lol'i-sis)

Degeneration or deficient development of the articulating part of a vertebra.

[spondylo- + G. lysis, loosening]

spondylolysis

A symptomless congenital deficiency of bone in the arch of the 5th or 4th lumbar vertebra disorder of the spine. The arch is formed of soft fibrous tissue and there is a weak link with adjacent vertebrae so that the condition of SPONDYLOLISTHESIS may occur.