TY - JOUR
T1 - Insufficiency Fracture in the Medial Wall of the Acetabulum After Total Hip Arthroplasty
AU - Kanaji, Arihiko
AU - Ando, Kenichi
AU - Nakagawa, Masato
AU - Fukaya, Eiichi
AU - Date, Hideki
AU - Yamada, Harumoto
PY - 2007/8
Y1 - 2007/8
N2 - Insufficiency fracture following total hip arthroplasty (THA) frequently occurs in the superior and inferior pubic ramus, the puboischial rami, or the ischium around the obturator foramen, while it rarely occurs in the medial wall of the acetabulum. Here, we report three cases showing insufficiency fracture in the medial wall of the acetabulum following THA. In our three cases, two fractures resulted from the development of bone fragility due to osteolysis at the prosthesis site, and the convergence of mechanical stress on the acetabular load bearing point due to loosening of the cup. We consider it appropriate to describe these fractures as another entity of stress fracture, namely, osteolytic fracture, rather than either pathologic fracture or insufficiency fracture.
AB - Insufficiency fracture following total hip arthroplasty (THA) frequently occurs in the superior and inferior pubic ramus, the puboischial rami, or the ischium around the obturator foramen, while it rarely occurs in the medial wall of the acetabulum. Here, we report three cases showing insufficiency fracture in the medial wall of the acetabulum following THA. In our three cases, two fractures resulted from the development of bone fragility due to osteolysis at the prosthesis site, and the convergence of mechanical stress on the acetabular load bearing point due to loosening of the cup. We consider it appropriate to describe these fractures as another entity of stress fracture, namely, osteolytic fracture, rather than either pathologic fracture or insufficiency fracture.
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U2 - 10.1016/j.arth.2006.06.009
DO - 10.1016/j.arth.2006.06.009
M3 - Article
C2 - 17689789
AN - SCOPUS:34547592052
SN - 0883-5403
VL - 22
SP - 763
EP - 767
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
IS - 5
ER -