Study on correlation between changes of imaging parameters and pain degree of knee osteoarthritis

doi:10.3877/cma.j.issn.1674-134X.2020.01.021

Abstract

Abstract:

Objective

To investigate the correlation between the changes of imaging parameters and the degree of pain in knee osteoarthritis(KOA).

Methods

Ninety patients with KOA were selected from September 2014 to September 2016 in Panyu District Hospital of traditional Chinese Medicine of Guangzhou. All the selected patients took knee joint axial X-ray films. Five imaging indicators were collected on picture archiving and communication systems(PACS) imaging system, namely patellofemoral index, patellofemoral coordination angle (suitable angle), lateral patellofemoral angle, patellofemoral tilt angle and femoral trochlear groove angle. The degree of pain in KOA patients was evaluated by visual analogue scale (VAS) pain score. According to the VAS score, the patients were divided into two groups: VAS score ≥ 5 and VAS score <5. The imaging indicators of the two groups were compared. The correlation between VAS scores and imaging parameters were analyzed by logistic multiple regression analysis. Among them, 1-3 was classified as mild pain, 4-6 as moderate pain and 7-10 as severe pain.

Results

The patellofemoral index was significantly different between the two groups(t=2.05, P<0.05). There was no statistical difference in other indicators. Regression analysis showed that patellofemoral index and moderate pain had statistical significance (odds ratio=1.345, P<0.05).

Conclusions

There is a correlation between the change of lower limb force line and the degree of pain in KOA patients. Patellofemoral index is associated with moderate pain.

Key words: Pain, Knee osteoarthritis

Yantao Wang, Yaqin Yang, Huaqing Jiang, Jinzhao Chen, Dejian Liu, Shuyi Xian, taibin Qiu, Weikuan Li, chi Zhou. Study on correlation between changes of imaging parameters and pain degree of knee osteoarthritis[J]. Chinese Journal of Joint Surgery(Electronic Edition), 2020, 14(01): 115-118.

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References 15

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组别	例数	外侧髌股角	髌股倾斜角	髌股指数	髌股协调角	股骨滑车角
VAS评分≥ 5分	48	19.02±4.81	－22.01±10.99	1.85±2.73	－4.86±5.34	115.14±12.24
VAS评分<5分	42	17.18±4.97	－21.60±11.08	0.73±0.11	－4.07±5.68	114.06±14.18
t值	－	1.12	1.08	2.05	1.05	0.93
P值	－	>0.05	>0.05	<0.05	>0.05	>0.05

组别	例数	外侧髌股角	髌股倾斜角	髌股指数	髌股协调角	股骨滑车角
VAS评分≥ 5分	48	19.02±4.81	－22.01±10.99	1.85±2.73	－4.86±5.34	115.14±12.24
VAS评分<5分	42	17.18±4.97	－21.60±11.08	0.73±0.11	－4.07±5.68	114.06±14.18
t值	－	1.12	1.08	2.05	1.05	0.93
P值	－	>0.05	>0.05	<0.05	>0.05	>0.05

	疼痛评分	回归系数	标准误	Wald值	P值	OR	95%置信区间
	外侧髌股角	－0.071	116.226	0.000	0.896	0.931	(0.012，0.954)
	髌股倾斜角	0.032	39.907	0.000	0.999	1.033	(0.010，0.923)
轻度	髌股指数	0.294	0.033	79.132	<0.05	1.342	(7.963，19.631)
	髌股协调角	0.021	25.507	0.000	0.919	1.022	(0.014，0.896)
	股骨滑车角	－2.779	98.974	0.001	0.978	0.062	(0.011，0.927)
	外侧髌股角	0.122	116.226	0.000	0.999	1.130	(0.009，0.816)
	髌股倾斜角	0.016	39.907	0.000	0.950	1.016	(0.0317，0.964)
中度	髌股指数	0.296	0.029	106.064	<0.05	1.345	(6.472，20.213)
	髌股协调角	－0.014	25.507	0.000	0.932	0.987	(0.0147，1.054)
	股骨滑车角	－1.883	98.970	0.000	0.985	0.152	(0.0131，0.946)
	外侧髌股角	－0.043	116.226	0.004	0.084	0.958	(0.0258，0.567)
	髌股倾斜角	0.010	39.907	0.021	0.072	1.010	(0.369，0.875)
重度	髌股指数	－1.970	98.971	0.000	0.984	0.139	(0.034，0.849)
	髌股协调角	－0.020	25.507	0.000	0.999	0.980	(0.045，0.843)
	股骨滑车角	0.327	0.000	0.010	0.275	1.387	(0.038，1.492)

	疼痛评分	回归系数	标准误	Wald值	P值	OR	95%置信区间
	外侧髌股角	－0.071	116.226	0.000	0.896	0.931	(0.012，0.954)
	髌股倾斜角	0.032	39.907	0.000	0.999	1.033	(0.010，0.923)
轻度	髌股指数	0.294	0.033	79.132	<0.05	1.342	(7.963，19.631)
	髌股协调角	0.021	25.507	0.000	0.919	1.022	(0.014，0.896)
	股骨滑车角	－2.779	98.974	0.001	0.978	0.062	(0.011，0.927)
	外侧髌股角	0.122	116.226	0.000	0.999	1.130	(0.009，0.816)
	髌股倾斜角	0.016	39.907	0.000	0.950	1.016	(0.0317，0.964)
中度	髌股指数	0.296	0.029	106.064	<0.05	1.345	(6.472，20.213)
	髌股协调角	－0.014	25.507	0.000	0.932	0.987	(0.0147，1.054)
	股骨滑车角	－1.883	98.970	0.000	0.985	0.152	(0.0131，0.946)
	外侧髌股角	－0.043	116.226	0.004	0.084	0.958	(0.0258，0.567)
	髌股倾斜角	0.010	39.907	0.021	0.072	1.010	(0.369，0.875)
重度	髌股指数	－1.970	98.971	0.000	0.984	0.139	(0.034，0.849)
	髌股协调角	－0.020	25.507	0.000	0.999	0.980	(0.045，0.843)
	股骨滑车角	0.327	0.000	0.010	0.275	1.387	(0.038，1.492)

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