J Korean Orthop Assoc.  2019 Jun;54(3):281-286. 10.4055/jkoa.2019.54.3.281.

Total Hip Arthroplasty in Patients with Avascular Necrosis of the Entire Femur

• Yi SR
• Im SH
• Park SH

• KMID: 2450149
• DOI: http://doi.org/10.4055/jkoa.2019.54.3.281

Abstract

Avascular necrosis (AVN) is defined as the cellular death of bone and bone marrow components due to the loss of blood supply, and associated with post-traumatic or non-traumatic events. AVN usually involves the epiphysis of a long bone, such as the femoral and humeral heads, which are susceptible to osteonecrosis. Many studies have been conducted but they were restricted to investigations of femoral head avascular necrosis. The presence of osteonecrosis in the proximal femur may impair biological fixation after total hip arthroplasty. We report a 56-year-old male patient with avascular necrosis located not only at the femoral head, but also in the entire femur, including the medullary cavity, who underwent total hip arthroplasty 2 years earlier along with a review of the relevant literature.

Keyword

entire femur; avascular necrosis; total hip arthroplasty; femoral stem

MeSH Terms

Arthroplasty, Replacement, Hip*
Bone Marrow
Epiphyses
Femur*
Head
Humans
Humeral Head
Male
Middle Aged
Necrosis*
Osteonecrosis

Figure

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  Figure 1. Anterioposterior (A) and frog leg lateral (B) radiographs show collapse of the right femur head and subchondral fracture.

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  Figure 2. Coronal (A) and axial (B) T2-weighted fat suppression magnetic resonance imaging show extended necrosis extended to the femur diaphysis.

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  Figure 3. Anterior and posterior view of technetium-99m bone scintigraphs showing diffuse uptake in the right femur suggesting entire femur avascular necrosis.

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  Figure 4. Right femur (A) and knee (B) T2-weighted fat suppression magnetic resonance imaging show avascular necrosis extended to the lateral femoral condyle.

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  Figure 5. (A) Postoperative anteroposterior and lateral radiographs show press-fitted femoral stem and acetabular component. (B) Four-month follow-up radiographs show calcar resorption and about 6-mm-sized subsidence is observed (white arrow). (C) Twelve-month follow-up radiographs show progress subsidence to approximately 10 mm but no further progression of subsidence is observed in the 18 months (D) and 24 months (E) follow-up radiographs.

Reference

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