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Clinical Orthopaedics and Related Research®
Published in: Clinical Orthopaedics and Related Research® 9/2017

01-09-2017 | Basic Research

Reliability and Validity of the Musculoskeletal Tumor Society Scoring System for the Upper Extremity in Japanese Patients

Authors: Kosuke Uehara, MD, Koichi Ogura, MD, Toru Akiyama, MD, Yusuke Shinoda, MD, Shintaro Iwata, MD, Eisuke Kobayashi, MD, Yoshikazu Tanzawa, MD, Tsukasa Yonemoto, MD, Hirotaka Kawano, MD, Akira Kawai, MD

Published in: Clinical Orthopaedics and Related Research® | Issue 9/2017

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Abstract

Background

The Musculoskeletal Tumor Society (MSTS) scoring system developed in 1993 is a widely used disease-specific evaluation tool for assessment of physical function in patients with musculoskeletal tumors; however, only a few studies have confirmed its reliability and validity.

Questions/purposes

The aim of this study was to validate the MSTS scoring system for the upper extremity (MSTS-UE) in Japanese patients with musculoskeletal tumors for use by others in research. Does the MSTS-UE have: (1) sufficient reliability and internal consistency; (2) adequate construct validity; and (3) reasonable criterion validity in comparison to the Toronto Extremity Salvage Score (TESS) or SF-36?

Methods

Reliability was performed using test-retest analysis, and internal consistency was evaluated with Cronbach’s alpha coefficient. Construct validity was evaluated using a scree plot to confirm the construct number and the Akaike information criterion network. Criterion validity was evaluated by comparing the MSTS-UE with the TESS and SF-36.

Results

The test-retest reliability with intraclass correlation coefficient (0.95; 95% CI, 0.91–0.97) was excellent, and internal consistency with Cronbach’s α (0.7; 95% CI, 0.53–0.81) was acceptable. There were no ceiling and floor effects. The Akaike Information Criterion network showed that lifting ability, pain, and dexterity played central roles among the components. The MSTS-UE showed substantial correlation with the TESS scoring scale (r = 0.75; p < 0.001) and fair correlation with the SF-36 physical component summary (r = 0.37; p = 0.007). Although the MSTS-UE showed slight correlation with the SF-36 mental component summary, the emotional acceptance component of the MSTS-UE showed fair correlation (r = 0.29; p = 0.039).

Conclusions

We can conclude that the MSTS is not an adequate measure of general health-related quality of life; however, this system was designed mainly to be a simple measure of function in a single extremity. To evaluate the mental state of patients with musculoskeletal tumors in the upper extremity, further study is needed.
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Metadata
Title
Reliability and Validity of the Musculoskeletal Tumor Society Scoring System for the Upper Extremity in Japanese Patients
Authors
Kosuke Uehara, MD
Koichi Ogura, MD
Toru Akiyama, MD
Yusuke Shinoda, MD
Shintaro Iwata, MD
Eisuke Kobayashi, MD
Yoshikazu Tanzawa, MD
Tsukasa Yonemoto, MD
Hirotaka Kawano, MD
Akira Kawai, MD
Publication date
01-09-2017
Publisher
Springer US
Published in
Clinical Orthopaedics and Related Research® / Issue 9/2017
Print ISSN: 0009-921X
Electronic ISSN: 1528-1132
DOI
https://doi.org/10.1007/s11999-017-5390-x

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