Validation of a novel hip arthroscopy simulator: establishing construct validity

Christopher Cychosz; Zain M. Khazi; Matthew Karam; Kyle Duchman; Michael Willey; Robert Westermann

doi:10.1093/jhps/hnz059

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Validation of a novel hip arthroscopy simulator: establishing construct validity

Journal article

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Peer reviewed

Validation of a novel hip arthroscopy simulator: establishing construct validity

Christopher Cychosz, Zain M. Khazi, Matthew Karam, Kyle Duchman, Michael Willey and Robert Westermann

Journal of hip preservation surgery, Vol.6(4), pp.385-389

12/01/2019

DOI: 10.1093/jhps/hnz059

PMCID: PMC6990386

PMID: 32015891

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Abstract

Hip arthroscopy (HA) is technically demanding and associated with a prolonged learning curve. Recently, arthroscopic simulators have been developed to anatomically model various joints including the knee, shoulder and hip. The purpose of this study is to validate a novel HA simulator. Twenty trainees and one sports medicine fellowship-trained orthopaedic surgeon at a single academic institution were recruited to perform a diagnostic HA procedure using the VirtaMed ArthroS hip simulator. Trainee characteristics, including level of training, general arthroscopy experience and hip specific arthroscopy experience, were gathered via questionnaire. For the purpose of this study, participants were categorized as novice (<25), intermediate (25-74) or experienced (>= 75) based on the number of prior arthroscopies performed. Various performance metrics, including composite score, time and camera path length were recorded for each attempt. Metrics were analyzed categorically using ANOVA tests with significance set to P < 0.05. Composite performance score in the novice cohort was 114.5 compared with 146.4 and 151.5 in the intermediate and experienced cohorts (P = 0.0019), respectively. Novice arthroscopists performed the simulated diagnostic arthroscopy procedure in an average time of 321 s compared with 202 s and 181 s in the intermediate and experienced cohorts (P < 0.002), respectively. Cartilage damage and simulator safety score did not differ significantly between groups (P = 0.775). Simulator composite score and procedure time showed strong correlation with year of training (r = 0.65 and -0.70, respectively) and number of arthroscopies performed (r = 0.65 and -0.72). The ArthroS hip simulator shows good construct validity and performance correlates highly with total number of arthroscopic cases reported during training.

Orthopedics

Life Sciences & Biomedicine

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Details

Title: Subtitle: Validation of a novel hip arthroscopy simulator: establishing construct validity
Creators: Christopher Cychosz - Univ Iowa Hosp & Clin, Dept Orthoped & Rehabil, 200 Hawkins Dr, Iowa City, IA 52242 USA
Zain M. Khazi - Univ Iowa Hosp & Clin, Dept Orthoped & Rehabil, 200 Hawkins Dr, Iowa City, IA 52242 USA
Matthew Karam - University of Iowa
Kyle Duchman - University of Iowa Hospitals and Clinics
Michael Willey - University of Iowa
Robert Westermann - University of Iowa
Resource Type: Journal article
Publication Details: Journal of hip preservation surgery, Vol.6(4), pp.385-389
DOI: 10.1093/jhps/hnz059
PMID: 32015891
PMCID: PMC6990386
NLM abbreviation: J Hip Preserv Surg
ISSN: 2054-8397
eISSN: 2054-8397
Publisher: Oxford Univ Press
Number of pages: 5
Language: English
Date published: 12/01/2019
Academic Unit: Orthopedics and Rehabilitation; Injury Prevention Research Center; Athletic Training Program
Record Identifier: 9984305880002771

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