Clinical comparative study of porous coated tantalum rod system in the early nontraumatic osteonecrosis of the femoral head

doi:10.3877/cma.j.issn.2096-0263.2018.05.004

Abstract

Abstract:

Objective

To compare the effect of the porous coating tantalum rod implant and conservative treatment in early and mid-time of early nontraumatic femoral head necrosis.

Methods

A retrospective study of sixty femoral head necrosis patients with 80 hips admitted to the department of Joint Surgery, Affiliated Hospital of Qingdao University from June 2012 to January 2017 were conducted. According to the different treatment methods, they were divided into conservative treatment group (conservative group, 30 cases, 40 hips) and core decompression porous tantalum rod implantation (tantalum rod group, 30 cases, 40 hips). Postoperative complications, radiological assessment and clinical using the Harris hip score were evaluated.

Results

In the conservative group, 27 cases (36 hips) were followed up, 3 cases (4 hips) were lost, 20 cases (27 hips) were followed up in tantalum rod group, 10 cases (13 hips) missed. The mean follow-up time was 26±6 months (3 to 62 months). Harris score of conservative group and tantalum rod group before treatment, 12 months after treatment and last follow-up were analyzed through repeated measurement design analysis of variance showing that there was significant difference between the two groups (F=3046.153, P=0.000), there was interaction between groups and time points (F=5883.563, P=0.000), the differences of each time point except the first time point were statistically significant; the difference between the tantalum rod group and the other two groups was statistically significant at each time point (F=2563.841, P=0.000). Two groups had difference in survival analysis (Log rank=87.432, P<0.001).

Conclusion

The porous coating tantalum implant could bring better short-intermediate term effect than conservative group.

Key words: Tantalum, Internal fixators, Femur head necrosis

Yuan Fang, Changrong Ding, Yingzhen Wang, Haining Zhang. Clinical comparative study of porous coated tantalum rod system in the early nontraumatic osteonecrosis of the femoral head[J]. Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition), 2018, 04(05): 271-276.

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References 32

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组别	年龄（岁，±s）	股骨头病变分期（FicatⅠ期/FicatⅡ期）	侧别（左/右/双侧）
钽棒组	50±5	10/20	15/5/10
保守组	50±7	7/23	15/5/10
t值	1.321	1.589	1.935
P值	0.189	0.132	0.798

组别	年龄（岁，±s）	股骨头病变分期（FicatⅠ期/FicatⅡ期）	侧别（左/右/双侧）
钽棒组	50±5	10/20	15/5/10
保守组	50±7	7/23	15/5/10
t值	1.321	1.589	1.935
P值	0.189	0.132	0.798

组别	例数	治疗前	12个月随访	末次随访	F值	P值
保守组	27	59±9	55±10^a	50±8^ab	43.563	0.001
钽棒组	20	58±7	86±5^a	81±7^ab	2563.841	<0.001
F值	?	1.952	1570.658	2031.521	?	?
P值	?	0.175	<0.001	<0.001	?	?

组别	例数	治疗前	12个月随访	末次随访	F值	P值
保守组	27	59±9	55±10^a	50±8^ab	43.563	0.001
钽棒组	20	58±7	86±5^a	81±7^ab	2563.841	<0.001
F值	?	1.952	1570.658	2031.521	?	?
P值	?	0.175	<0.001	<0.001	?	?

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