Experiences and results with a cementless femoral stem design: SL-PLUS MIA
Tarih
2023Yazar
Köken, Murat
Akan, Burak
Basat, Hakkı Çağdaş
Karagüven, Doğaç
Gümüş, Danyal
Üst veri
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Aim: To evaluate the outcomes of the SL-PLUS® MIA cementless femoral stem (Smith & Nephew
Orthopedics AG, Switzerland) application using the modified lateral approach.
Method: Demographic and clinical data, in addition to the operational outcomes of 42 patients who underwent
total hip arthroplasty (THA) and partial hip arthroplasty (PHA) using the MIA cementless femoral stem with
the modified lateral approach, between November 2015 and June 2017, were collected. Harris Hip Scores were
calculated preoperatively and at 6 weeks, and 3 and 6 months, and 1 and 3 years postoperatively (a total of 6
times) in the THA group and at 6 weeks, and 3 and 6 months, and 1 and 3 years postoperatively (a total of 5
times) in the PHA group.
Results: Data from 24 THA patients with a diagnosis of primary or secondary coxarthrosis and 18 PHA
patients with a diagnosis of isolated collum femoris fracture were collected. The average patient (26 females,
16 males, mean age 68.1 ± 13.1 years) follow-up period was 46.7 ± 1.4 months. There were no intraoperative
or postoperative trochanteric fractures. No patients displayed the trendelenburg sign. The Harris Hip Scores of
all of the patients increased postoperatively, proportional to the duration of follow-up.
Conclusions: In hip arthroplasties performed using the modified lateral approach, femoral preparation with a
MIA femoral stem, which has a proximal lateral slope, reduced the tension in the trochanteric region. This was
believed to lower the risk of trochanteric fractures. Additionally, this type of femoral component may help to
avoid the trendelenburg sign postoperatively by protecting more gluteal muscle during the femoral preparation
stage due to its proximal design.