Wear rate and osteolysis in two types of second-generation annealed highly cross-linked polyethylene in total hip arthroplasty: A retrospective comparative study with a minimum of five years.
Orthop Traumatol Surg Res
; 109(1): 103147, 2023 02.
Article
em En
| MEDLINE
| ID: mdl-34793945
ABSTRACT
BACKGROUND:
As no previous study has directly compared the linear wear rate in two types of second-generation annealed highly cross-linked polyethylene, we performed a retrospective study with a minimum of 5-year follow-up to assess primary arthroplasties in the (1) wear rates and (2) incidence of osteolysis of the two types of HXLPE.HYPOTHESIS:
There was no significant difference in the linear wear rate and the incidence of osteolysis between the two types of second-generation annealed highly cross-linked polyethylene. PATIENTS ANDMETHODS:
In this single-center study, we reviewed 257 cases of primary cementless total hip arthroplasties between 2011 and 2015, which were performed with 32mm delta ceramic on second-generation annealed highly cross-linked polyethylene (X3 and E1 were used in 105 and 103 cases, respectively.). The mean wear rate was evaluated using a computer-assisted method, and the incidence of osteolysis was evaluated based on the appearance of a localized area with loss of trabecular bone or cortical erosion adjacent to the implants during the latest follow-up.RESULTS:
In total, we evaluated 208 cases, followed postoperatively for over 5 years (mean, 6.1 years, range 5.0-8.0). There were no significant differences between the two groups with respect to age (list in order of Group X, Group E, p value) (61.2±12.3, 62.7±12.1, p=0.36), sex (ratio of male 17.1%, 14.6%, p=0.61), body mass index (22.9±3.7, 22.8±4.0, p=0.91), pre- (49.9±14.8, 48.5±13.8, p=0.49) and post-operative (91.3±9.1, 92.7±7.0, p=0.23) Japanese Orthopaedic Association Hip Score, cup size (50.8±3.0, 50.9±2.2, p=0.70), cup inclination (38.7±4.8, 37.6±4.8, p=0.10), and cup anteversion (18.7±6.9, 18.5±7.6, p=0.80). The mean linear wear rates of the X3 and E1 groups were 0.057±0.039 (range 0-0.16) and 0.054±0.037mm/year (range 0-0.15), respectively (p=0.61). No osteolysis was found on the final plain radiographs in both groups.DISCUSSION:
This study revealed that both types of highly cross-linked polyethylene have excellent linear wear rates and were equally safe to use. However, the difference between the two materials in terms of the long-term wear rate should be further validated. LEVEL OF EVIDENCE III; retrospective case control study.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Osteólise
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Artroplastia de Quadril
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Prótese de Quadril
Tipo de estudo:
Observational_studies
/
Risk_factors_studies
Limite:
Humans
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Male
Idioma:
En
Revista:
Orthop Traumatol Surg Res
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Japão