Clinical study on the relationship between knee deformity and tibial rotation in knee osteoarthritis patients

doi:10.3877/cma.j.issn.2096-0263.2019.02.007

Abstract

Abstract:

Objective

To explore the relationship between knee varus deformity and the rotation Angle of the tibia in patients with osteoarthritis of knee joint.

Methods

80 patients with knee osteoarthritis and 50 normal people were randomly selected and divided into KOA group and control group. The difference and correlation of femorotibial angle (FTA) and tibial rotation angle (TTA) between the two groups were compared.

Results

In the KOA group, the FTA is (182.6±2.5)°, the FTA in the control group is (174.8±2.9)°, FTA of the KOA group is bigger than the control group (t=41.598, P<0.01); and TTA of the KOA group is (20±8)°, the control group is (25±8)°, which is smaller than the control group (t=6.360, P<0.01). The FTA differences between the control group and the KOA group were statistically significant among males [(174.3±2.2)° vs (181.9±2.2)°, t=24.319, P<0.01], females [(175.0±2.4)° vs (184.8±3.3)°, t=17.490, P<0.01], 40-59 year [(173.1±2.0)° vs (177.0±2.2)°, t=63.808, P<0.01], 60-69 year [(174.7±2.0)° vs (179.2±2.2)°, t=76.181, P<0.01], >70 year [(176.7±2.6)° vs (188.5±3.1)°, t=49.259, P<0.01], left side [(175.3±2.2)° vs (183.9±3.3)°, t=29.871, P<0.01] and right side [(175.0±3.2)° vs (182.3±2.8)°, t=28.658, P<0.01] subgroups. The TTA difference of male [(25±8)° vs (21±8)°, t=3.198, P<0.01], female [(26±7)° vs (20±10)°, t=4.719, P<0.01], >70 year group [(23±10)° vs (18±8)°, t=6.651, P<0.01], the left side [(25±9)° vs (20±8)°, t=4.512, P<0.01], the right side [(25±9)° vs (21±8)°, t=2.973, P<0.01] between control group and KOA group were statistically significant. In KOA group, FTA in 40-59 year group (r=-0.317, P<0.05), 60-69 year group (r=-0.429, P<0.05), >70 year group (r=-0.810, P<0.01), K-L class Ⅱ (r=-0.387, P<0.05), Ⅲ (r=-0.442, P<0.05), Ⅳ(r=-0.834, P<0.01) were all correlated with TTA.

Conclusion

The knee joint deformity of knee osteoarthritis was negatively correlated with the rotation angle of tibia, and its correlation was influenced by age and K-L classification.

Key words: Osteoarthritis knee, Arthroplasty, replacement, knee, Tibial rotation angle

Hongpeng Hu, Yonggang Gao, Zeming Liu, Wenhui Ma, Zhenzhong Li, Xiangke Li, Di Qi, Huijie Li, Yongtai Han. Clinical study on the relationship between knee deformity and tibial rotation in knee osteoarthritis patients[J]. Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition), 2019, 05(02): 99-104.

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References 28

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组别	膝数	性别（例，男/女）	年龄（岁，±s）	侧别（例，左/右）
对照组	100	22/28	60±13	50/50
KOA组	107	23/57	64±10	53/54
统计值		χ²=1.382	t=1.822	χ²=0.005
P值		0.314	0.163	1.000

组别	膝数	性别（例，男/女）	年龄（岁，±s）	侧别（例，左/右）
对照组	100	22/28	60±13	50/50
KOA组	107	23/57	64±10	53/54
统计值		χ²=1.382	t=1.822	χ²=0.005
P值		0.314	0.163	1.000

组别	膝数	合计	性别		侧别		年龄分组
组别	膝数	合计	男性	女性	左	右	40～59岁	60～69岁	>70岁
对照组	100	25±8	25±8	26±7	25±9	25±9	26±9	25±10	23±10
KOA组	107	20±8	21±8	20±10	20±8	21±8	26±7	21±6	18±8
t值		6.360	3.198	4.719	4.512	2.973	1.149	1.699	6.651
P值		<0.01	<0.01	<0.01	<0.01	<0.01	0.261	0.099	<0.01

组别	膝数	合计	性别		侧别		年龄分组
组别	膝数	合计	男性	女性	左	右	40～59岁	60～69岁	>70岁
对照组	100	25±8	25±8	26±7	25±9	25±9	26±9	25±10	23±10
KOA组	107	20±8	21±8	20±10	20±8	21±8	26±7	21±6	18±8
t值		6.360	3.198	4.719	4.512	2.973	1.149	1.699	6.651
P值		<0.01	<0.01	<0.01	<0.01	<0.01	0.261	0.099	<0.01

组别	分层		FTA	TTA	相关系数	P
KOA组	年龄分组	40～59岁	177.0±2.2	26±7	-0.317	<0.05
		60～69岁	179.2±2.2	21±6	-0.429	<0.05
		>70岁	188.5±3.1	18±8	-0.810	<0.01
	K-L分级	Ⅱ	177.6±2.9	25±7	-0.387	<0.05
		Ⅲ	182.5±3.4	21±6	-0.442	<0.05
		Ⅳ	189.4±3.2	13±6	-0.834	<0.01
对照组	年龄分组	40～59岁	173.1±2.0	26±9	-0.193	>0.05
		60～69岁	174.7±2.0	25±10	-0.232	>0.05
		>70岁	176.7±2.6	23±10	-0.241	<0.05
	K-L分级	0～1	174.8±2.9	25±8	-0.217	>0.05

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