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Objective <p>This study aimed to assess the intra- and inter-examiner reliability of shear wave elastography (SWE) in measuring the stiffness of quadriceps and hamstring muscles in individuals diagnosed with knee osteoarthritis (KOA).</p> Methods <p>Thirty-two individuals diagnosed with KOA underwent evaluations of the quadriceps and hamstring muscles. Shear-wave elastography (SWE) quantified shear-wave speed (m/s) in the rectus femoris, vastus lateralis, vastus medialis, quadriceps tendon, semimembranosus, hamstring tendon, and biceps femoris. Two independent examiners conducted SWE assessments to determine muscle stiffness, with measurements repeated after 6 to 8 days.</p> Results <p>In the initial test session, mean shear-wave speeds ranged from 2.00 to 2.47&#xa0;m/s for the quadriceps muscle and from 2.06 to 2.60&#xa0;m/s for the hamstrings across testers 1 and 2. During the retest session, mean shear-wave speeds ranged from 1.98 to 2.48&#xa0;m/s for the quadriceps and from 2.07 to 2.57&#xa0;m/s for the hamstrings. The intraclass correlation coefficients (ICCs) indicated good to excellent reliability for both intra-examiner reliability (0.88–0.98) and inter-examiner reliability (0.78–0.93). Additionally, the ICCs and standard errors of measurement (SEM) for inter-examiner reliability varied from 0.78 to 0.93 and 0.04 to 0.14 for hamstring muscle stiffness, and from 0.84 to 0.91 and 0.08 to 0.12 for quadriceps muscle stiffness, respectively.</p> Conclusion <p>Shear-wave elastography is a reliable technique for assessing muscle stiffness in the quadriceps and hamstrings of patients suffering from knee osteoarthritis.</p>

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Reliability of quadriceps and hamstring muscle stiffness measured by ultrasound shear wave elastography in patients with knee osteoarthritis

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月15日

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  • Ping Liu,
  • Mohamad Shariff Bin Abdul Hamid,
  • Yueyue Shi,
  • Xiaohan Fan,
  • Hengzhi Deng,
  • Eliza Hafiz,
  • Xuelin Zhang,
  • Yaru Hao

摘要

Objective

This study aimed to assess the intra- and inter-examiner reliability of shear wave elastography (SWE) in measuring the stiffness of quadriceps and hamstring muscles in individuals diagnosed with knee osteoarthritis (KOA).

Methods

Thirty-two individuals diagnosed with KOA underwent evaluations of the quadriceps and hamstring muscles. Shear-wave elastography (SWE) quantified shear-wave speed (m/s) in the rectus femoris, vastus lateralis, vastus medialis, quadriceps tendon, semimembranosus, hamstring tendon, and biceps femoris. Two independent examiners conducted SWE assessments to determine muscle stiffness, with measurements repeated after 6 to 8 days.

Results

In the initial test session, mean shear-wave speeds ranged from 2.00 to 2.47 m/s for the quadriceps muscle and from 2.06 to 2.60 m/s for the hamstrings across testers 1 and 2. During the retest session, mean shear-wave speeds ranged from 1.98 to 2.48 m/s for the quadriceps and from 2.07 to 2.57 m/s for the hamstrings. The intraclass correlation coefficients (ICCs) indicated good to excellent reliability for both intra-examiner reliability (0.88–0.98) and inter-examiner reliability (0.78–0.93). Additionally, the ICCs and standard errors of measurement (SEM) for inter-examiner reliability varied from 0.78 to 0.93 and 0.04 to 0.14 for hamstring muscle stiffness, and from 0.84 to 0.91 and 0.08 to 0.12 for quadriceps muscle stiffness, respectively.

Conclusion

Shear-wave elastography is a reliable technique for assessing muscle stiffness in the quadriceps and hamstrings of patients suffering from knee osteoarthritis.