Isolated Acetabular Liner Exchange for Polyethylene Wear and Osteolysis with Well-Fixed Metal Shell
10.4055/cios.2019.11.3.270
- Author:
Kyung Wook KIM
1
;
Jeong Joon YOO
;
Min Nyun KIM
;
Hee Joong KIM
Author Information
1. Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea. oskim@snu.ac.kr
- Publication Type:Original Article
- Keywords:
Humerus;
Fracture fixation;
Bone screws
- MeSH:
Acetabulum;
Bone Screws;
Female;
Follow-Up Studies;
Fracture Fixation;
Head;
Humans;
Humerus;
Male;
Methods;
Osteolysis;
Polyethylene;
Retrospective Studies
- From:Clinics in Orthopedic Surgery
2019;11(3):270-274
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND: The isolated liner and head exchange procedure has been an established treatment method for polyethylene wear and osteolysis when the acetabular component remains well fixed. In this study, the mid-term results of this procedure were evaluated retrospectively. METHODS: Among the consecutive patients operated on from September 1995, two patients (three hips) were excluded because of inadequate follow-up, and the results of remaining 34 patients (34 hips) were evaluated. There were 20 men and 14 women with a mean age of 49 years. A conventional polyethylene liner was used in 26 cases and a highly cross-linked polyethylene liner was used in eight cases. In three cases, the liner was cemented in a metal shell because a compatible liner could not be used. RESULTS: After a follow-up of 5 to 20.2 years, re-revision surgery was necessary in 10 cases (29.4%): in eight for wear and osteolysis at 55 to 101 months after liner exchange and in two for acetabular loosening at 1 and 1.5 years after liner exchange. Re-revision surgery included all component revision (four cases), cup revision (four cases), and liner exchange (two cases). In all re-revision cases, a conventional polyethylene liner was used initially. There was no failure in the cases in which a highly cross-linked polyethylene liner was used. CONCLUSIONS: The results of this study suggest that isolated acetabular liner exchange is a reasonable option for wear and osteolysis when the metal shell is well fixed. More promising long-term results are expected with the use of highly cross-linked polyethylene liners.
