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- W2377946163 abstract "Objective To evaluate the short-term efficacy of tantalum rod implantation treating early-stage osteonecrosis of the femoral head(ONFH) and discuss the indications and contraindications of tantalum rod implantation.Methods Patients who suffered from ONFH and received tantalum rod implantation from June 2008 to October 2010,were followed up.The mean follow-up time of 58 cases(63 hips) with early-stage ONFH treated with tantalum rod implant was(16.03±8.16) months(6-34 months),and the average age was(37.43±10.3) years.Staged by ARCO,there were one hip in stage Ⅰ,45 hips in stage Ⅱ,12 hips in unstable stage Ⅱ,and five hips in stage Ⅲ.By preoperative modified anteroposterior classification,41 hips were type C1,and nine hips were type C2.Classified by modified index of necrotic extent,17 hips were below 33,25 hips were between 34-66,and 21 hips were over 67.The average preoperative Harris score was(87.80±15.50).Results No complications related to tantalum rod occured after operation.Harris score in the last follow-up was(98.96±4.19).Using the femoral head collapse4 mm as the endpoint,the survival rate was 77.78% at the follow-up time of 24 months.Kaplan-Meier survival curve showed the survival rate was 84.4% in stage Ⅱ and 58.3% in unstable stage Ⅱ.The survival rate in type C1 of modified anteroposterior classification was 85.37%,and 11.1% in type C2,and there was a significant difference between them applying Log-rank test(χ2=31.35,P0.001).As for necrosis extent:in group below 33 the survival rate was 94.1%,in group between 34-66 it was 96.0%,and in group over 67 it was 42.9%(χ2=16.07,P0.01).Conclusions Tantalum rod implantation is an effective method to treat early stage ONFH,and the indications are ARCO stage Ⅰ and stable stage Ⅱ that the modified index of necrotic extent below 67,or type C1 and under type C1 in modified anteroposterior classification." @default.
- W2377946163 created "2016-06-24" @default.
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- W2377946163 date "2011-01-01" @default.
- W2377946163 modified "2023-09-24" @default.
- W2377946163 title "Short term efficacy evaluation and analysis of the treatment for early-stage osteonecrosis of the femoral head with Tantalum Rod" @default.
- W2377946163 hasPublicationYear "2011" @default.
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