Posterior kyphectomy for myelomeningocele with anterior placement of fixation: a retrospective review.
BACKGROUND
Kyphosis in myelomeningocele is a rare and difficult problem. Many strategies have been used with no single procedure universally agreed on. Techniques involving anterior and posterior fixation may provide better fusion.


OBJECTIVE
We describe a novel procedure for anteroposterior kyphectomy in patients with myelomeningocele. Apical posterior kyphectomy is followed by the insertion of two rods distally into the vertebral bodies and sacrum. Sublaminar wires are placed superiorly and the kyphosis is reduced by sequential tightening. We determined kyphosis correction and intraoperative blood loss for this new procedure.


METHODS
We retrospectively reviewed 22 patients (average age, 7.6 years [range, 2-17 years]) who underwent apical kyphectomy from 1982 to 2008. Charts were examined and radiographs measured preoperatively, immediately postoperatively, and at final followup. Followup averaged 6.4 years (range, 0-14 years) with 19 patients having at least 2 years of followup.


RESULTS
Kyphosis decreased from a mean of 123° (range, 79°-163°) preoperatively to 40° (range, 13°-92°) immediately postoperatively and was a mean of 60° (range, 14°-126°) at final followup. Operating time was 248 minutes (range, 180-345 minutes), estimated blood loss was 765 mL (range, 140-2100 mL), and length of stay was 14 days (range, 1-57 days). Ten of the 22 patients had complications with eight requiring reoperation.


CONCLUSIONS
This anteroposterior kyphectomy provided a high level of kyphosis correction, which was largely maintained over the study period. Blood loss, surgical time, and complication rates were acceptable as compared with other techniques reported in the literature.
Comstock
Sean A
SA
seancmd@hotmail.com
Cook
P Chris
PC
Leahey
J Lorne
JL
El-Hawary
Ron
R
Hyndman
John C
JC
D000293:Adolescent; D016063:Blood Loss, Surgical; D001864:Bone Wires; D002648:Child; D002675:Child, Preschool; D002818:Cordotomy; D005260:Female; D006801:Humans; D007738:Kyphosis / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D008297:Male; D008591:Meningomyelocele / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D009674:Nova Scotia; D009984:Orthopedic Fixation Devices; D019637:Orthopedic Procedures / Q000009:adverse effects / Q000295:instrumentation*; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies; D013997:Time Factors; D016896:Treatment Outcome