Clin Orthop Surg.  2009 Dec;1(4):201-206. 10.4055/cios.2009.1.4.201.

Retrograde Intramedullary Nailing for Periprosthetic Supracondylar Fractures of the Femur after Total Knee Arthroplasty

• Han HS
• Oh KW
• Kang SB

• KMID: 999402
• DOI: http://doi.org/10.4055/cios.2009.1.4.201

Abstract

BACKGROUND
Periprosthetic supracondylar fractures of the femur after total knee arthroplasty are not common but are usually difficult to treat due to the advanced age of patients and frequently accompanying osteoporosis. Retrograde intramedullary nailing can be effective in promoting healing of these fractures by providing sufficient stability, but the number of beneficiaries is small due to its limited applicability and the postoperative function has rarely been assessed. This study evaluated the efficacy of retrograde intramedullary nailing for the treatment of periprosthetic supracondylar fractures of the femur using the clinical outcomes.
METHODS
Between January 2000 and May 2006, 9 patients (10 knees) with periprosthetic supracondylar fractures of the femur underwent retrograde intramedullary nailing. An open reduction and additional fixation using a shape memory alloy ring were used in 3 of them in whom a closed reduction was not successful. The clinical and radiographic findings were reviewed retrospectively in 7 patients (8 knees), excluding 2 who were unavailable for a follow-up assessment due to death. The mean follow-up period was 39 months (range, 24 to 82 months). The union and alignment of the fracture were assessed radiographically. The postoperative function was evaluated using Sanders' criteria.
RESULTS
Radiographic union was obtained in all patients after an average of 13 weeks (range, 12 to 15 weeks) postoperatively. No postoperative infection, heterotopic ossification and component loosening were observed. After union, the coronal alignment averaged 0.1degrees valgus (range, 3.6degrees varus to 2.6degrees valgus) and the mean sagittal alignment was 1.9degrees of extension (range, 0.9degrees of flexion to 6.3degrees of extension). The mean range of motion was 103degrees (range, 90degrees to 120degrees) postoperatively. At the last follow up, there were 1 excellent, 5 good and 2 fair results according to Sanders' criteria.
CONCLUSIONS
With retrograde intramedullary nailing, excellent fracture union and good functional recovery were obtained in patients with periprosthetic supracondylar fractures.

Keyword

Femoral fracture; Intramedullary nailing; Total knee arthroplasty; Retrograde; Periprosthetic

MeSH Terms

Aged
Arthroplasty, Replacement, Knee/*adverse effects
Female
Femoral Fractures/*surgery
Follow-Up Studies
Fracture Fixation, Intramedullary/*methods
Humans
Male
Periprosthetic Fractures/*surgery
Retrospective Studies
Treatment Outcome

Figure

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  Fig. 1 (A) Preoperative X-rays of a periprosthetic fracture of the right knee in a 57-year-old woman. (B) X-rays taken 5 months later show mature callus formation. A short supracondylar nail was used due to femoral anterior bowing.

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