Insufficiency Fracture in the Medial Wall of the Acetabulum After Total Hip Arthroplasty

Abstract 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 insuf...

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Bibliographic Details
Published in:The Journal of arthroplasty 2007-08, Vol.22 (5), p.763-767
Main Authors: Kanaji, Arihiko, MD, PhD, Ando, Kenichi, MD, PhD, Nakagawa, Masato, MD, PhD, Fukaya, Eiichi, MD, PhD, Date, Hideki, MD, Yamada, Harumoto, MD, PhD
Format: Article
Language:English
Subjects:
acetabulum
Acetabulum - diagnostic imaging
Acetabulum - injuries
Acetabulum - surgery
Aged
Arthroplasty, Replacement, Hip - adverse effects
Female
Fractures, Bone - diagnostic imaging
Fractures, Bone - etiology
Fractures, Bone - therapy
Hip Prosthesis
Humans
insufficiency fracture
Orthopedics
Osteoarthritis, Hip - diagnostic imaging
Osteoarthritis, Hip - surgery
Osteolysis - complications
Osteolysis - diagnostic imaging
Prosthesis Failure
Radiography
total hip arthroplasty
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Summary:Abstract 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.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2006.06.009