Solitary or multiple osteochondromas, which are benign bone turners that us
ually occur in the long bones, are rarely found in the vertebral column. Wh
en present in the spine. however, they have a predilection for the cervical
or upper thoracic regions.
The authors present the case of a solitary osteochondroma arising from the
left L-5 articular process that contributed to sciatica; complete cure was
achieved following its removal.
It is possible to speculate that the cartilage of secondary ossification ce
nters: can be the origin of aberrant islands of cartilaginous tissue that c
ause the osteochondroma to form. The more rapid the ossification process of
these centers, the greater the probability that aberrant cartilage will fo
rm. Therefore, the fact that osteochondromas are more frequently located in
the higher segments of the vertebral column could be explained by the diff
erent durations of the ossification processes in these centers, which incre
ase gradually below the cervical segments.