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THE TAYLOR SPATIAL FRAME IN LIMB RECONSTRUCTION. A SINGLE SURGEON EXPERIENCE



Abstract

Introduction: The Taylor spatial frame (TSF) (Smith & Nephew) is a hexapod ring fixator that utilises the Ilizarov principles. The TSFs design is based on the Stewart-Gough platform, the use of which was originally described in mechanical engineering. Due to its unique design the TSF is extremely versatile in limb reconstruction surgery, allowing six degrees of freedom bone fragment manipulation with a high degree of precision that is aided by correction planning software.

Methods: Between October 2003 and December 2008 66 consecutive patients were treated using the TSF by a single consultant surgeon. Median patient age was 45 (range 20–69). The original pathology included 18 mal-unions, 13 acute fractures, 10 medial compartment osteoarthritis (OA) of the knee with varus deformity, 8 infected nonunions, 7 limb length discrepancies, 5 nonunions, 3 ankle OA, 3 post traumatic posterolateral corner of the knee instability, 1 multiple epiphyseal dysplasia, 1 lateral compartment OA of the knee with valgus deformity, 1 deformity secondary to Polio. There were 10 ankles, 19 knees (1 femur, 18 tibiae) and 37 tibiae.

Results: The procedures performed were 16 high tibial osteotomies, 2 frame assisted platings, 8 bone transports, 32 deformity corrections, 14 Ankle arthrodesis (9 primary, 5 revision after nonunion), 9 limb lengthening and 1 derotation. The median bone transport distance and lengthening achieved is reported.

The median time spent in the frame was 21 weeks (range 9–81), including 8 patients who required 2 frames to complete their treatment.

54 cases had a satisfactory outcome in terms of union and deformity correction using only the TSF, 5 cases were ongoing. Complications included 1 below knee amputation, 2 docking site nonunions requiring ORIF, 2 nonunions after ankle arthrodesis requiring T2 nails. 2 frames were removed due to compliance issues. 2 patients developed deformity requiring Tendo-achilles lengthening. There were 2 DVTs and 2 non-fatal PEs. 1 patient suffered a fracture at a femoral pin-site after TSF removal which was treated with external fixation. The median Otterburn grade of pin-site infection was 2 (range 0–4).

Conclusion: The Taylor spatial frame was used successfully in several different pathologies ranging from acute trauma to chronic deformity. The TSF provides the surgeon with a reliable treatment strategy that is both versatile and accurate.

Correspondence should be addressed to BLRS c/o BOA, at the Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London, WC2A 3PE, England.