2.Case report
A 53-year-old woman underwent cementless mobile-bearing Oxford partial
knee phase 3 (Biomet Orthopaedics) by the senior author in 2012 for
anteromedial osteoarthritis. One year after an uneventful postoperative
recovery, the patient fell on the ground level, while walking on the
street. A minimally displaced medial femoral condyle fracture was
diagnosed without ligamentous instability, and a closed reduction and
percutaneous fixation with 6.5 mm cannulated cancellous lag screws was
performed [7]. Prior to the fracture, the patient’s Oxford Knee
Score (OKS) was 46. After the fracture healing, her OKS was 42. In 2014,
the patient had a second fell at ground level, which resulted in the
Unified Classification System (UCS) type C supracondyllary femoral
fracture [10] (Figure 1 ). Both femoral and tibial
components seemed well-fixed, and insert dislocation was not observed in
x-rays. We performed an open reduction and internal fixation and used
compression screws and anatomical distal femoral locking plate for
fixation (Figure 2 ). Active and passive range-of-motion
exercises were initiated immediately after the surgery. Union was
observed at the fracture site at 12 weeks on x-rays, and full
weight-bearing was allowed. The patient had 1300 range
of motion and was able to walk independently 6 months after surgery.
Four years after surgery, the implants were still well-fixed, and OKS
was 36 (Figure 3 ).