Age-related differences in radiographic parameters for femoroacetabular impingement in hip arthroplasty patients

Geoffrey S. Van Thiel, Joshua D. Harris, Richard W. Kang, Jaskarndip Chahal, Craig J Della Valle, Charles A. Bush-Joseph, Shane J. Nho

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Purpose: To compare the prevalence of femoroacetabular impingement (FAI) radiographic findings between patients aged younger than 50 years and those aged 50 years or older who underwent total hip arthroplasty. Methods: Total hip arthroplasty patients aged younger than 50 years and those aged 50 years or older were identified retrospectively from a facility medical record database. Fifty patients from each group were randomly selected, and preoperative radiographs were collected. Dysplastic, inflammatory, post-traumatic, and osteonecrosis patients were excluded. Radiographs were evaluated for FAI-specific findings. Intraobserver and interobserver reliability was evaluated with k statistics for categorical variables and intraclass correlation coefficients for continuous variables. An independent t test was used to compare continuous variables, c2 analysis was used for discrete variables, and a z ratio was used to analyze proportions. Results: The mean age between the subgroups of patients aged younger than 50 years and those aged 50 years or older (43 years and 68 years, respectively) was significantly different (P < .05). Findings in the subgroup aged younger than 50 years included significantly more men (P < .001), decreased lateral joint space with maintained medial joint space (P < .05), significantly greater alpha angle on both the anteroposterior view and the frog-leg lateral view (P < .05), significantly higher Tönnis and Sharp angles (P < .01), and significantly lower center-edge angle (P < .001). Conclusions: This retrospective case series shows an increased prevalence of FAI findings (specifically cam pathology) in a patient population aged younger than 50 years undergoing total hip arthroplasty when compared with a cohort aged 50 years or older. Level of Evidence: Level III, retrospective comparative study.

Original languageEnglish
Pages (from-to)1182-1187
Number of pages6
JournalArthroscopy - Journal of Arthroscopic and Related Surgery
Volume29
Issue number7
DOIs
StatePublished - Jul 1 2013

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Fingerprint Dive into the research topics of 'Age-related differences in radiographic parameters for femoroacetabular impingement in hip arthroplasty patients'. Together they form a unique fingerprint.

Cite this