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2025 ; 2025
(ä): 8851877
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Validation on Method of Measuring the Knee Joint Force Sense and Application in
Patients With Knee Osteoarthritis
#MMPMID40642762
Jin Z
; Shi J
; Zhang H
; Zhou X
; Zhang K
; Yan S
Appl Bionics Biomech
2025[]; 2025
(ä): 8851877
PMID40642762
show ga
Background: Force sense reflects the efferent activity capacity of
proprioception. Currently, methods for measuring force sense in the knee joint is
lack. This study aims to validate a constructed test system and to explore the
characteristics of force sense in patients with knee osteoarthritis (KOA).
Methods: Seventy-five subjects were recruited: 30 for verifying the reliability
of test system and exploring the impact of body mass index (BMI) and the striking
force on force sense; 20 healthy adults and 25 KOA patients for the method
application. The force sense test system comprised a self-designed force
application apparatus and a wireless surface electromyography (sEMG) device
(DELSYS Inc, USA). The reflex contraction latency of muscles was considered as
the force sense. The intraclass correlation coefficient (ICC) was used to verify
the reliability. Results: The reflex contraction latencies of biceps femoris (BF)
was the shortest and ICC in the two tests is 0.950 (p < 0.001). No significant
differences in force sense were found between different BMI groups (p=0.065), and
there was no notable interaction between BMI and striking force (p=0.283). A
significant difference in force sense was observed between different striking
forces (p < 0.001). There were no significant differences in force sense of
bilateral sides between healthy people and KOA patients (p=0.126, p=0.315).
Conclusion: The force sense testing method established in this study is
applicable for measuring knee joint force sense. BMI did not affect knee joint
force sense but striking force did, and subjects with different BMI chose the
same striking force; KOA did not influence the force sense of knee joint.