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KMID : 0359620110230040231
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Journal of Korean Knee Society
2011 Volume.23 No. 4 p.231 ~ p.235
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The Use of a Ti-Ni Shape Memory Alloy Ring Bone Fixator During the Retrograde Nailing of Supracondylar Femoral Fractures
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Han Hyuk-Soo
Kim Dae-Ha
Kang Seung-Baik
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Abstract
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Purpose: To identify the effects of using a Ti-Ni shape memory alloy ring shaped bone fixator (SMA-rBF) during the retrograde nailing of supracondylar femoral fractures.
Materials and Methods: The authors reviewed 25 patients with a supracondylar femoral fracture treated by retrograde intramedullary nailing with or without SMA-rBF (group S, 12/25; group N, 13/25). Radiological measurements of angular deformity were performed and functional assessments were made using the Sanders grading system.
Results: All fractures healed after an average of 12.2 weeks (range, 9-15 weeks) in group N and after 11.6 weeks (range, 10-13 weeks) in group S (p=0.351). The mean angle of coronal angular deformity was valgus 0.8° (range, varus 2.3°-valgus 4.5°) in group N and valgus 0.7° (range, varus 1.0°-valgus 2.4°) in group S (p=0.892). The mean angle of sagittal angular deformity was 1.0° in extension (range, flexion 3.2°-extension 3.1°) in group N and 0° (range, flexion 2.1°-extension 1.2°) in group S (p=0.022). However, functional grading evaluations revealed no differences between the two groups.
Conclusions: When reduction of a distal femoral fracture with retrograde nailing was difficult additional mini-open reduction and fixation with a ring shaped SMA did not delay or prevent bony union and resulted in good postoperative alignment.
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KEYWORD
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Femoral supracondylar fracture, Retrograde nailing, Ti-Ni, Internal fixator, Alignment
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