TY - JOUR
T1 - Age-related differences in radiographic parameters for femoroacetabular impingement in hip arthroplasty patients
AU - Van Thiel, Geoffrey S.
AU - Harris, Joshua D.
AU - Kang, Richard W.
AU - Chahal, Jaskarndip
AU - Valle, Craig J Della
AU - Bush-Joseph, Charles A.
AU - Nho, Shane J.
N1 - Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2013/7/1
Y1 - 2013/7/1
N2 - 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.
AB - 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.
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U2 - 10.1016/j.arthro.2013.04.013
DO - 10.1016/j.arthro.2013.04.013
M3 - Article
C2 - 23809452
AN - SCOPUS:84891716853
VL - 29
SP - 1182
EP - 1187
JO - Arthroscopy
JF - Arthroscopy
SN - 0749-8063
IS - 7
ER -