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Reliability of Intraoperative Knee Range of Motion Measurements by Goniometer Compared with Robot-Assisted Arthroplasty

Authors
 Hyuck Min Kwon  ;  Ick-Hwan Yang  ;  Woo-Suk Lee  ;  Alvin Ray L. Yu  ;  Sang Yun Oh  ;  Kwan Kyu Park 
Citation
 JOURNAL OF KNEE SURGERY, Vol.32(3) : 233-238, 2019 
Journal Title
 JOURNAL OF KNEE SURGERY 
ISSN
 1538-8506 
Issue Date
2019
MeSH
Aged ; Arthrometry, Articular/instrumentation* ; Arthroplasty, Replacement, Knee/instrumentation* ; Female ; Humans ; Male ; Middle Aged ; Osteoarthritis, Knee/physiopathology* ; Osteoarthritis, Knee/surgery* ; Prospective Studies ; Range of Motion, Articular/physiology* ; Reproducibility of Results ; Robotic Surgical Procedures/instrumentation*
Abstract
Accurate measurement of knee range of motion (ROM) is critical to predict the outcomes of knee surgery and prognosis. We investigated the reliability of knee ROM measurements by goniometer compared with robotic system. Fifty-three patients with medial osteoarthritis who were planning to undergo unicompartmental knee arthroplasty (UKA) with robotic UKA were prospectively enrolled. During the operation, knee ROM measurement was performed in both flexion and extension before and after insertion of the implant using both a goniometer and robotic system. The intraclass correlation coefficient (ICC) of extension measured by the goniometer and robotic system showed good agreement; however, the ICC of flexion did not show good agreement. During passive flexion, the mean values measured before insertion of the implant were significantly lower by goniometer (134.6 ± 6.43) than by robot (145.4 ± 6.80; p = 0.017); likewise, the mean values after insertion of the implant were significantly lower by goniometer (138.6 ± 6.07) than by robotic system (147.0 ± 6.60; p = 0.045). A goniometer can underestimate knee ROM measurements compared with robotic system, especially in flexion. Orthopaedic surgeons should be cautious when measuring the flexion angle with a goniometer.
Full Text
https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0038-1641140
DOI
10.1055/s-0038-1641140
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Hyuck Min(권혁민) ORCID logo https://orcid.org/0000-0002-2924-280X
Park, Kwan Kyu(박관규) ORCID logo https://orcid.org/0000-0003-0514-3257
Yang, Ick Hwan(양익환)
Oh, Sangyun(오상윤) ORCID logo https://orcid.org/0000-0001-9123-7211
Lee, Woo Suk(이우석) ORCID logo https://orcid.org/0000-0002-0798-1660
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/173378
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