Novel arthrometer for quantitative clinical examination of the knee in three planes: Safety, reliability, minimum detectable changes, and side-to-side differences in healthy subjects

被引：0

作者：

Imhauser, Carl W. ^{[1
]}

Berube, Erin E. ^{[1
]}

Oladimeji, Akinola Emmanuel ^{[1
]}

Shamritsky, David Z. ^{[1
]}

Zayyad, Zaid A. ^{[1
]}

Fraychineaud, Thomas J. ^{[1
]}

Vazquez, Jennifer T. ^{[1
]}

Jahandar, Hamidreza ^{[1
]}

Lyman, Stephen ^{[4
]}

Parides, Michael K. ^{[4
]}

Jones, Debi ^{[3
]}

Chiaia, Theresa A. ^{[3
]}

Pearle, Andrew D. ^{[2
]}

Nawabi, Danyal H. ^{[2
]}

Wickiewicz, Thomas L. ^{[2
]}

机构：

[1] Hosp Special Surg, Dept Biomech, 535 East 70 th St, New York, NY 10021 USA

[2] Hosp Special Surg, Sports Med Inst, 535 East 70 th St, New York, NY 10021 USA

[3] Hosp Special Surg, Dept Rehabil, 535 East 70 th St, New York, NY 10021 USA

[4] Hosp Special Surg, Res Inst, Biostat & Bioinformat Program, 535 East 70 th St, New York, NY 10021 USA

来源：

JOURNAL OF BIOMECHANICS | 2024年 / 176卷

基金：

美国国家卫生研究院;

关键词：

Knee; Laxity; Arthrometer; Linkage; Reliability; Safety; Minimum detectable changes; Side-to-side differences; ANTERIOR CRUCIATE LIGAMENT; PIVOT SHIFT; BIOMECHANICAL EVALUATION; LAXITY; REPRODUCIBILITY; INJURIES; RECONSTRUCTION; ACCURACY; KT-1000; GENUCOM;

D O I：

10.1016/j.jbiomech.2024.112330

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Physical examination of the knee joint is used to diagnose the type and severity of knee ligament injury; however, these exams are qualitative and subjective. To perform common physical examinations, we developed an arthrometer which quantitatively measures the load-displacement response in anterior-posterior (AP) translation, internal-external rotation (IER) and varus-valgus (VV) rotation. Here we describe safety, reliability, minimum detectable changes (MDCs), and absolute side-to-side differences in twenty young, healthy subjects (ten male, ten female, mean age: 28 +/- 6 years). The arthrometer consists of an instrumented mechanical linkage, a force-moment sensor, and software for real-time visualization and recording of the load-displacement responses. During testing, the subject sits reclined in a chair with their knee fixed at 30 degrees of flexion. Two examiners tested both knees of each subject twice to assess reliability via intraclass correlation coefficients (ICC). All subjects completed the test protocol with minimal pain and stated that they would volunteer to be tested again. Each knee required on average five minutes to test. All intra-test reliabilities were excellent (>= 0.91). Intraexaminer reliabilities ranged from good to excellent (0.62-0.89), and inter-examiner reliabilities were good to excellent (>= 0.72). MDCs for repeat measures were <= 4.5 mm, 4.6 degrees, and 2.3 degrees for AP, IER, and VV, respectively. The absolute side-to-side differences for this cohort averaged 3.8 mm in AP, 5.5 degrees in IER, and 2.2 degrees in VV. Our arthrometer was safe, testing was time-efficient, and MDCs in our cohort of healthy subjects support utilization of this device for clinical research.

引用

页数：9