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| Comparison of the curative effect of proximal coated tapered stem and fully coated rectangular stem in total hip arthroplasty |
| GAO Feng LI Tongxian LI Huixia CAO Xuyang MENG Liying YANG Jianbo |
| Department of Radiology, Jizhong Enegry Xingtai Mining Group General Hospital, Hebei Province, Xingtai 054000, China |
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Abstract Objective To compare the curative effect between the proximal coated tapered stem prosthesis and the fully coated rectangular stem prosthesis in total hip arthroplasty (THA). Methods From March 2018 to March 2019, a total of 64 patients with THA in Jizhong Energy Xingtai Mining Group General Hospital were selected, and a total of 32 patients with proximal coated tapered stem prosthesis and fully coated rectangular stem prosthesis were used. The operation time and intraoperative blood loss were compared, GE dual-energy X-ray absorptiometry was used to monitor the bone mineral density values around the prosthesis before and 1, 3, 6 and 12 months after the operation. And 6 months after surgery, Harris score and the incidence of adverse reactions of the prosthesis were combined the changes in bone mineral density, clinical efficacy and safety of the two prostheses were compared. Results There was no significant difference between the two groups in operation time and intraoperative blood loss (P ＞ 0.05). There was a statistically significant difference in bone mineral density between the two groups and times in Gruen 1 and 7 areas (P ＜ 0.05). The time point of the fully coated rectangular stem prosthesis group was higher than that of the proximal coated tapered stem prosthesis group, the difference was statistically significant (P ＜ 0.05). The Harris scores of the two groups at 6 months after surgery were significantly higher than those before surgery, while the fully coated rectangular stem prosthesis group was higher than that of the proximal coated tapered stem prosthesis group, and the difference was statistically significant (P ＜ 0.05). Re-examination of the DR images of the two groups at 12 months after the operation showed that the prosthesis was in good position, and there was no loosening, sinking, or re-fracture around the prosthesis. Conclusion Proximal coated tapered stem prosthesis and fully coated rectangular stem prosthesis used in THA to treat hip fractures have better results and safety, but the fully coated rectangular stem prosthesis is better than the proximal coated tapered stem prosthesis. It has advantages in terms of bone ingrowth around the prosthesis, relief of postoperative pain and faster recovery of joint function.
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