Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty

Fracture of a femoral component after modern unicompartmental knee arthroplasty is very rare. Although this is not the first case on this subject, no study has reported insufficient crimping as the cause of femoral component loosening that led to breakage of a metallic component. A 69-year-old man u...

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Main Authors: Yoichi Ishibashi, Tasuku Mashiba, Masaki Mori, Tetsuji Yamamoto
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Case Reports in Orthopedics
Online Access:http://dx.doi.org/10.1155/2019/5938598
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author Yoichi Ishibashi
Tasuku Mashiba
Masaki Mori
Tetsuji Yamamoto
author_facet Yoichi Ishibashi
Tasuku Mashiba
Masaki Mori
Tetsuji Yamamoto
author_sort Yoichi Ishibashi
collection DOAJ
description Fracture of a femoral component after modern unicompartmental knee arthroplasty is very rare. Although this is not the first case on this subject, no study has reported insufficient crimping as the cause of femoral component loosening that led to breakage of a metallic component. A 69-year-old man underwent medial unicompartmental knee arthroplasty for right medial knee osteoarthritis. His early postoperative course was good; however, the 1-year postoperative radiograph showed an apparent radiolucent line around the femoral component, and he occasionally had right knee pain. However, he had been followed up conservatively because he had been doing well even while doing heavy agricultural work. At 8 years after surgery, because breakage of the femoral component was found, revision surgery was performed using bicruciate-retaining total knee arthroplasty. The removed fractured femoral component revealed a thick cement mantle detached from the bone surface. The postoperative course of the patient after the revision surgery was excellent. We suggest that the causes of femoral component breakage include early implant loosening caused by uneven cement crimping of the femoral component to the bone and excessive loading stress as a result of heavy labour.
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spelling doaj-art-7d6da21e5b9341c39aeabd0839dd78292025-02-03T01:31:34ZengWileyCase Reports in Orthopedics2090-67492090-67572019-01-01201910.1155/2019/59385985938598Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee ArthroplastyYoichi Ishibashi0Tasuku Mashiba1Masaki Mori2Tetsuji Yamamoto3Department of Orthopedic Surgery, Kagawa University Faculty of Medicine, Kagawa, JapanDepartment of Orthopedic Surgery, Kagawa University Faculty of Medicine, Kagawa, JapanDepartment of Orthopedic Surgery, Kagawa University Faculty of Medicine, Kagawa, JapanDepartment of Orthopedic Surgery, Kagawa University Faculty of Medicine, Kagawa, JapanFracture of a femoral component after modern unicompartmental knee arthroplasty is very rare. Although this is not the first case on this subject, no study has reported insufficient crimping as the cause of femoral component loosening that led to breakage of a metallic component. A 69-year-old man underwent medial unicompartmental knee arthroplasty for right medial knee osteoarthritis. His early postoperative course was good; however, the 1-year postoperative radiograph showed an apparent radiolucent line around the femoral component, and he occasionally had right knee pain. However, he had been followed up conservatively because he had been doing well even while doing heavy agricultural work. At 8 years after surgery, because breakage of the femoral component was found, revision surgery was performed using bicruciate-retaining total knee arthroplasty. The removed fractured femoral component revealed a thick cement mantle detached from the bone surface. The postoperative course of the patient after the revision surgery was excellent. We suggest that the causes of femoral component breakage include early implant loosening caused by uneven cement crimping of the femoral component to the bone and excessive loading stress as a result of heavy labour.http://dx.doi.org/10.1155/2019/5938598
spellingShingle Yoichi Ishibashi
Tasuku Mashiba
Masaki Mori
Tetsuji Yamamoto
Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty
Case Reports in Orthopedics
title Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty
title_full Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty
title_fullStr Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty
title_full_unstemmed Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty
title_short Fracture of the Femoral Component Caused by Insufficient Crimping after Modern Unicompartmental Knee Arthroplasty
title_sort fracture of the femoral component caused by insufficient crimping after modern unicompartmental knee arthroplasty
url http://dx.doi.org/10.1155/2019/5938598
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