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Patients with periprosthetic distal femoral fractures after TKA show worse mid-term outcomes
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Patients with periprosthetic distal femoral fractures after total knee arthroplasty have comparable complication and survival rates but worse mid-term functional outcomes when compared to patients who had primary total knee arthroplasty, according to results of this study.
“We found that periprosthetic distal femoral fracture after [total knee arthroplasty] TKA worsens functional outcomes at the medium term, but arthroplasty complication and survival rates were similar in both groups,” Alejandro Lizaur-Utrilla, MD, PhD, and colleagues wrote in the abstract.
The researchers compared functional outcomes of 28 patients with TKA to an additional 28 patients who had a periprosthetic distal femoral fracture after TKA and were treated with open fracture reduction surgery using retrograde intramedullary nails, locking condylar plates, dynamic condylar screws or compression screws based on the type of fracture, according to the abstract.
The mean follow-up was 6.7 years for each group. Radiographic osteopenia was a factor predisposing patients to periprosthetic distal femoral fracture, but factors such as body mass index, notching, preinjury Knee Society scores or motion were not. In the fracture group, the preinjury Knee Society scores, WOMAC, knee motion and SF-12 scores were significantly lower compared to the control group, according to the abstract.
Disclosure: The authors have no relevant financial disclosures.
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