Abstract
Presenters Position:
Purpose of Study:
To perform a retrospective audit of the spectrum of management of tibial pseudarthrosis by a single surgeon over a seven year time period.
Description of Methods:
All discharge summaries and operation logs from 2004 to 2011 were reviewed to identify patients, and their case notes and x-rays were examined. Patients were contacted telephonically for follow-up examination.
Summary of Results:
Eleven patients presented with pseudarthrosis or bowing of the tibia (six females, five males, age range 4 months–7 years). Three were being treated conservatively and two patients had undergone primary below-knee amputation for severe deformity and functional deficit.
Six patients had undergone resection of the pseudarthrosis with intramedullary fixation with a Williams' rod. Three of these patients had Neurofibromatosis type 1. In all instances autogenous iliac crest bone graft was used. Fibular osteotomy was performed in five of these patients and the fibula was stabilised with a K-wire in four patients. All patients were discharged in an above knee cast. Mean follow-up from 1st surgery was 23.75 (1.5–72) months. In one patient, histology confirmed suspected fibrous dysplasia. One patient had had a revision procedure 12 months prior to last follow-up for re-fracture and rod displacement. Mean residual deformity was recorded as 4.2° (1° to 10°) valgus and 6.6° (−2° to 20°) anterior bowing. We had no instances of non-union or sepsis at latest follow-up in this small series.
Conclusion:
Patients with tibial pseudarthrosis have a wide spectrum of presentation. Not every patient requires immediate surgery. Our treatment aim in the young patient is to maintain optimum ambulation, clinical union and alignment with radiographic appearance assuming secondary consideration. In our hands, internal fixation using a Williams' rod with autograft is safe and effective as the initial surgical procedure. Continued follow-up of these patients is mandatory as the risk of complications is high even after apparent union.
