Total Knee Arthroplasty and Periprosthetic Distal Femoral Fracture: Looking Beyond the Osteoporosis to Previous Osteoporotic Fracture

Overview

Journal Osteoporos Int

Specialties Endocrinology
Orthopedics

Date 2024 May 27

PMID 38801524

Authors

Y-B Park

M Kim

H-C Nam

J-W Jeon

C-W Ha

Affiliations

Soon will be listed here.

Abstract

Purpose: Osteoporosis is a risk factor for fractures, including those of the hip, vertebrae, and distal radius; however, the association between osteoporosis and periprosthetic fractures after total knee arthroplasty (TKA) has not been much investigated. Therefore, we aimed to investigate the association of the presence of systemic osteoporosis with periprosthetic fractures after TKA.

Methods: This study included 34 patients with periprosthetic fractures following primary TKA and 106 controls matched for age and sex. Bone mineral density was evaluated at the femoral neck, total hip, and lumbar spine using dual X-ray absorptiometry. Medical records were reviewed for age; sex; body mass index; smoking; rheumatoid arthritis, endocrine diseases, and cardiovascular diseases; history of glucocorticoid use; medication for osteoporosis; and history of previous osteoporotic fracture. In addition, anterior femoral notching after TKA was evaluated. Univariable and multivariable logistic regression analysis were used to determine factors associated with periprosthetic fracture.

Results: The prevalence of osteoporosis in the fracture group was higher than that in the control group (61.8% vs. 40.6%, p=0.045). The rate of medication for osteoporosis was significantly low in the fracture group (47.6 % vs 76.7%, p=0.026). History of previous osteoporotic fracture (odds ratio [OR], 9.1; p=0.015) and osteoporosis (OR, 3.6; p=0.013) were significant risk factors for periprosthetic fractures after TKA. Medication for osteoporosis could decrease the risk of periprosthetic fracture (OR 0.3; p=0.020).

Conclusion: Osteoporosis is a major risk factor for periprosthetic distal femoral fractures after TKA. Therefore, careful assessment and proper treatment of osteoporosis need and the importance of taking osteoporotic medication needs to be recognized to the patients following primary TKA, especially in patients with a history of osteoporotic fracture.

Level Of Evidence: Prognostic study, level III.

Citing Articles

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Osteoporosis in the setting of knee arthroplasty: a narrative review.

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[Risk factors and prevention strategies for periprosthetic femoral fractures in hip arthroplasty].

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