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Войти в исследования Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association · 2026
The effect of improving cervical extension function on quality of life in patients with dropped head syndrome.
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Sano Hiroki, Endo Kenji, Deguchi Ryutaro, Yamauchi Tomoyasu, Ishiyama Masahiro, Ueno Ryuuichi, Yamamoto Kengo
Аннотация
BACKGROUND: This study examined the effect of improvements in cervical extension function on quality of life (QOL) in patients with dropped head syndrome (DHS) using patient-reported quality of life (PRQOL).
METHODS: A total of 116 DHS patients were divided into three groups according to cervical extension function at the end of outpatient physical therapy: Non-improvement group (unable to sphinx prone position), Improvement group (able to sphinx prone position), and Marked-improvement group (able to sphinx prone position and all-fours position). Disease-specific QOL (DHS-QOL scale) and health-related QOL (EQ-5D-3L) were assessed both before and after physical therapy, and the PRQOL results were compared among groups.
RESULTS: The Non-improvement group showed no significant changes in either scale. In contrast, the Improvement group demonstrated moderate gains in both DHS-QOL and EQ-5D-3L, while the Marked-improvement group showed the greatest improvements, with large effect sizes across both measures. These findings indicate that enhancement of cervical extension function was strongly associated with PRQOL improvement.
CONCLUSION: Cervical extensor improvement in DHS patients contributes not only to physical function but also to patient-perceived QOL. Acquisition of cervical extension in the all-fours position may serve as a clinically meaningful goal for improving QOL in DHS patients.
METHODS: A total of 116 DHS patients were divided into three groups according to cervical extension function at the end of outpatient physical therapy: Non-improvement group (unable to sphinx prone position), Improvement group (able to sphinx prone position), and Marked-improvement group (able to sphinx prone position and all-fours position). Disease-specific QOL (DHS-QOL scale) and health-related QOL (EQ-5D-3L) were assessed both before and after physical therapy, and the PRQOL results were compared among groups.
RESULTS: The Non-improvement group showed no significant changes in either scale. In contrast, the Improvement group demonstrated moderate gains in both DHS-QOL and EQ-5D-3L, while the Marked-improvement group showed the greatest improvements, with large effect sizes across both measures. These findings indicate that enhancement of cervical extension function was strongly associated with PRQOL improvement.
CONCLUSION: Cervical extensor improvement in DHS patients contributes not only to physical function but also to patient-perceived QOL. Acquisition of cervical extension in the all-fours position may serve as a clinically meaningful goal for improving QOL in DHS patients.