The Journal of Bone and Joint Surgery, Vol 77, Issue 2 172-176, Copyright © 1995 by Journal of Bone and Joint Surgery, Inc
Posterior interbody arthrodesis with a fibular strut graft in spondylolisthesis
SI Esses, N Natout and P Kip
Toronto General Hospital, Ontario, Canada.
We reviewed the results of posterior interbody arthrodesis of the fifth
lumbar and first sacral vertebrae with the use of a fibular strut graft in
nine patients who had had a grade-III, IV, or V spondylolisthesis. The
average age of the patients at the time of the operation was twenty-seven
years (range, seventeen to thirty-two years). The average duration of the
symptoms preoperatively was three years (range, nine months to eleven
years), and the average duration of follow-up was three years (range, two
to five years). The most common preoperative symptom was back pain, which
was rated an average of 8.3 points (7, 8, or 9 points) on a visual-analog
scale of 1 to 10 points. The average angle of the slip was 45 degrees
(range, 15 to 70 degrees). Four of the slips were grade III, four were
grade IV, and one was grade V. Postoperatively, the average pain score was
1.4 points (1, 2, or 3 points). This improvement was significant (p <
0.05, Student t test). All nine patients had roentgenographic evidence of
osseous fusion at the one-year follow-up examination. Complications
included a dural tear in one patient, a superficial wound infection in two
patients, temporary weakness of the evertors of the foot in six patients,
and transient decreased sensation along the dorsum of the foot of the donor
leg in two patients.