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人股骨密质骨横断面的微动磨损特性研究 被引量:14
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作者 于海洋 蔡振兵 +1 位作者 朱旻昊 周仲荣 《摩擦学学报》 EI CAS CSCD 北大核心 2004年第5期448-452,共5页
采用配置外加体液恒温循环装置的高精密微动试验台研究了天然活性股骨密质骨/纯钛的微动磨损行为,探讨了不同位移幅值下摩擦系数随循环次数变化的规律.结果表明,在90N法向载荷下,随位移幅值增加,股骨密质骨的微动运行状态从部分滑移向... 采用配置外加体液恒温循环装置的高精密微动试验台研究了天然活性股骨密质骨/纯钛的微动磨损行为,探讨了不同位移幅值下摩擦系数随循环次数变化的规律.结果表明,在90N法向载荷下,随位移幅值增加,股骨密质骨的微动运行状态从部分滑移向完全滑移状态转变.当位移幅值较小时,接触表面变形处于弹性协调状态,损伤轻微.随着位移幅值的增加,接触表面变形逐步向弹、塑性变形以及严重塑性变形和粘着转变,微动损伤加剧.与此同时,密质骨试件微动磨痕深度随位移幅值的增加而增大,并同摩擦系数存在良好的对应关系.为了提高密质骨抵抗微动损伤的能力,有必要控制植入体/骨界面的微动幅度和降低摩擦系数. 展开更多
关键词 人股骨 密质骨 植入体 微动磨损性能
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闭合复位结合短股骨近端髓内钉治疗老年不稳定股骨转子间骨折
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作者 王健 徐卫星 +1 位作者 张春 童培建 《浙江医学》 CAS 2009年第12期-,共4页
股骨转子间骨折多发生于老年人,保守治疗多伴有较严重的并发症.尽早恢复患者的下地活动功能,对减少由于卧床导致的多种并发症,方便护理,提高患者生活质量,延长生命具有积极意义.随着内同定物与治疗方法的不断改进,国内外治疗老年人股骨... 股骨转子间骨折多发生于老年人,保守治疗多伴有较严重的并发症.尽早恢复患者的下地活动功能,对减少由于卧床导致的多种并发症,方便护理,提高患者生活质量,延长生命具有积极意义.随着内同定物与治疗方法的不断改进,国内外治疗老年人股骨转子间骨折越来越趋向手术.我们采用闭合复位结合短股骨近端髓内钉系统,手术治疗老年不稳定股骨转子间骨折患者59例,取得较好疗效;报道如下. 展开更多
关键词 闭合复位 股骨近端髓内钉 髓内钉治疗 老年人 不稳定 转子间骨折 股骨转子间 患者生活质量 多种并发症 治疗方法 延长生命 手术治疗 内外治疗 积极意义 活动功能 骨折患者 不断改进 保守治疗 人股骨 内同定
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激光全息双曝光法测量人体新鲜股骨皮质骨轴向泊松比
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作者 陈新民 赵云凤 《应用激光》 CSCD 北大核心 1991年第1期29-30,10,共3页
报告应用激光全息双曝光法测量人体新鲜股骨皮质骨沿长轴方向的泊松比。实验结果说明,激光全息干涉测量人体新鲜骨骼的泊松比能避免新鲜骨骼内含水份和油脂的影响。
关键词 全息术 测量 人股骨 泊松比 皮质骨
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Analysis of prosthetic replacement in treatment of femoral neck fracture on the hemiplegia side in the elderly 被引量:8
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作者 冯明利 沈惠良 +3 位作者 胡怀健 雍宜民 曹立 王玮 《Chinese Journal of Traumatology》 CAS 2004年第3期138-142,共5页
Objective: To study the effect of prosthetic replacement in treatment of femoral neck fractures on the hemiplegia side in the elderly. Methods: From May 1990 to May 2000, 189 elderly patients with femoral neck fractur... Objective: To study the effect of prosthetic replacement in treatment of femoral neck fractures on the hemiplegia side in the elderly. Methods: From May 1990 to May 2000, 189 elderly patients with femoral neck fractures were treated with prosthetic replacement in my hospital. Twenty-nine hemiplegia patients, who suffered from stroke previously, had Garden type III and type IV femoral neck fractures on the hemiplegia side. Thirty non-hemiplegia patients were chosen randomly. The two groups were followed-up for 27-98 months (average: 59 months). The age, hospitalization days, operating time, blood loss, blood transfusion, complications during perioperative period and long-term complications were compared between the two groups and the results of femoral head replacement and total hip replacement in the hemiplegia group were also compared. Results: All the patients of the two groups survived the perioperative period. No significant difference was found in the age, hospitalization days, operation time, blood loss and blood transfusion and long-term complications between the two groups (P> 0.05). However there was significant difference in complications during perioperative period between the two groups (P< 0.05). Five patients died in the hemiplegia group with the mortality of 17.2% and two died in the non-hemiplegia group with the mortality of 6.7% 11 months to 5 years after operation. There was significant difference in long-term complications between the femoral head replacement and the total hip replacement in the hemiplegia group (P< 0.05). The result of the total hip replacement was better than that of the femoral head replacement. Conclusions: Prosthetic replacement is a reliable method in treatment of Garden type III and type IV femoral neck fractures on the hemiplegia side in the elderly, and patients are safe during perioperative period. More complications during perioperative period occur in the hemiplegia group, and long-term complications are insignificantly different between the two groups. The mortality rate is higher in the hemiplegia group than in the non-hemiplegia group within 5 years after operation. Since the result of the total hip replacement is better than that of the femoral head replacement, total hip replacement should be chosen firstly to treat Garden type III and type IV femoral neck fractures on the hemiplegia side in the elderly if the muscular strength of the hip is beyond IV degree. 展开更多
关键词 Femoral neck fractures Hip prosthesis HEMIPLEGIA Aged
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Effect of dynamic hip screw on the treatment of femoral neck fracture in the elderly 被引量:11
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作者 Zhao Wenbo Liu Lei Zhang Hui Fang Yue Pei Fuxing Yang Tianfu 《Chinese Journal of Traumatology》 CAS CSCD 2014年第2期69-72,共4页
[Abstract] Objective: To discuss the indications, surgical procedures, and curative effect of dynamic hip screw (DHS) in the treatment of femoral neck fracture in the elderly. Methods: A retrospective study was c... [Abstract] Objective: To discuss the indications, surgical procedures, and curative effect of dynamic hip screw (DHS) in the treatment of femoral neck fracture in the elderly. Methods: A retrospective study was conducted to analyse the clinical data of 42 elderly patients who had been treated for femoral neck fracture with DHS in our department between June 2009 and November 2011. There were 21 males and 21 females with a mean age of 68.5 years (range 60-75 years). According to the Garden Classification, there were 19 cases of type II, 21 cases of type III and 2 cases of type IV fractures. By the Singh In- dex Classification, there were 3 cases of level 2, 19 cases of level 3 and 20 cases of level 4 fractures. The Harris cri- terion, complications and function recovery after operation were analysed. Results: The average hospitalization time in 42 patients was 11.2 days (range 7-21 days). All patients were followed up for 12-26 months (mean 18 months). No lung infection, deep venous thrombosis or other complications occurred. Partial backing-out of the screws was found in 2 cases. The internal fixation device was with- drawn after fracture healing. Internal fixation cutting was found in 1 case, and he had a good recovery after total hip arthroplasty. The time for fracture healing ranged from 3-6 months (average 4.5 months). According to Harris criteri- on, 15 cases were rated as excellent, 24 good, 2 fair and 1 poor. The Harris scale was significantly improved from 30.52+2.71 preoperatively to 86.61+2.53 at 6 months post- operatively (P〈0.05). Conclusion: DHS, being minimal invasive, al- lowing early activity and weight-bearing, is advisable for treatment of elderly patients with femoral neck fracture. In addition, it can avoid complications seen in artificial joint replacement. It is especially suitable for patients with mild osteoporosis. 展开更多
关键词 Bone screws HIP Femoral neck fractures OSTEOPOROSIS
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Prosthetic replacement in treatment of subcapital femoral neck fractures in the elderly 被引量:22
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作者 徐莘香 刘一 +1 位作者 刘建国 李印良 《Chinese Journal of Traumatology》 CAS 2002年第1期28-31,共4页
Objective: To compare the results of femoral head replacement (FHR) and total hip replacement (THR) in treatment of subcapital femoral neck fractures (SFNF). Methods: Between May 1987 and July 1998, 56 elderly patient... Objective: To compare the results of femoral head replacement (FHR) and total hip replacement (THR) in treatment of subcapital femoral neck fractures (SFNF). Methods: Between May 1987 and July 1998, 56 elderly patients (65-90 years; average 73.5 years) with SFNF were treated with prosthetic replacement. Six cases were treated with unipolar FHR, 18 cases with Bateman bipolar FHR, and 32 cases with Bateman bipolar THR. All domestic prostheses were installed with cement. Results: There was no significant difference between the 2 groups in operating time and blood transfusion. Forty-nine patients were followed-up for an average of 5 years and 10 months. No wound infection or death was related to surgery. Complications in Group FHR were significantly higher than that in Group THR. Conclusions: Since FHR is difficult to fit the bony acetabulum, it is only indicated for senile cases with poor conditions. However, the bipolar THR installed with cement is indicated for most elderly patients. Since the femoral head and acetabulum can fit each other completely, it is more stable for taking weight-bearing earlier with less complications. 展开更多
关键词 Femoral neck fracture Total hip replacement HEMIARTHROPLASTY
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Comparative study of anterolateral approach versus posterior approach for total hip replacement in the treatment of femoral neck fractures in elderly patients 被引量:9
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作者 王刚 谷贵山 +3 位作者 李丹 孙大辉 张伟 王铁军 《Chinese Journal of Traumatology》 CAS 2010年第4期234-239,共6页
Objective: To compare the clinical outcome of anterolateral minimally invasive approach versus conventional posterior approach for total hip replacement against femoral neck fractures in elderly patients. Methods: T... Objective: To compare the clinical outcome of anterolateral minimally invasive approach versus conventional posterior approach for total hip replacement against femoral neck fractures in elderly patients. Methods: The retrospective study was carried out on 42 patients who suffered from displaced femoral neck fractures (19 cases of Garden type Ⅲ, 23 cases of Garden type Ⅳ) treated by total hip replacement via anterolateral minimally invasive approach or conventional posterior approach by the same experienced surgeon. The average age of the patients was 78.1 years (range: 65-89 years). They were divided into anterolateral mini-invasive group (22 cases) and posterior group (20 cases). The mean time of follow-up was 13 months (range: 6-36 months). The anterolateral approach described by Hardinge goes through between anterior 1/3 and posterior 2/3 of the gluteus medius muscle, reaching the femoral neck from anterior capsule. The traditional posterior approach described by Moore (Southern incision) goes through the insertions of short external rotation muscles, reaching the femoral neck from posterior capsule. The related variables under observation were length of incision, operation time, postoperative limp, length of hospital stay and bed stay and dislolcation rate. Results: The length of the skin incision varied between 7 cm and 12 cm with the anterolateral minimally invasive technique, compared to 15-22 cm in the conventional procedure. It took less time (average 15 minutes) to complete the anterolateral minimally invasive approach (72 15 min), compared with the conventional approach (87 min ±10 min). The average Harris hip score was 91.23±10.20 in anterolateral approach, 90.03±11.05 in the posterior approach. The average length of hospital stay for patients with the anterolateral approach was (6.4±2.2) days (range: 4-9 days), while that in posterior approach was (9.2 ±3.1) days (range: 6-13 days). The average length of bed stay was (3.4±1.1) days (range: 2-5 days) in anterolateral group and (6.2±2.8) days (range: 3-10 days) in posterior group. No patients in anterolateral group experienced dislocation. One (5%) hip in posterior approach had dislocation. Conclusions: Anterolateral mini-invasive approach can decrease trauma, operation time, length of hospital stay and bed stay and rehabilitation time. The stability and minimal muscular damage permit the acceleration of postoperative rehabilitation, which can subsequently reduce the perioperative risk in the treatment of femoral neck fractures in the elderly undergoing total hip replacement. 展开更多
关键词 Arthroplasty replacement hip Surgical procedures minimal invasive Femoral neck fractures
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Comprehensive treatment for old patients with hip fractures
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作者 白斌 王坤正 +2 位作者 刘文科 宋金辉 陈君长 《Chinese Journal of Traumatology》 CAS 2003年第5期297-301,共5页
Objective: To observe the effect of comprehensive treatment for hip fracture in old people. Methods: Three hundred and seventy two old patients with hip fractures were randomly divided into two groups, Group A and Gro... Objective: To observe the effect of comprehensive treatment for hip fracture in old people. Methods: Three hundred and seventy two old patients with hip fractures were randomly divided into two groups, Group A and Group B. Cases in Group A were treated only by operations. Cases in Group B received comprehensive treatment. The Singh Indexes of both uninjured and injured femoral necks were used to judge the osteoporosis levels before operation and one year after the operation. The function of injured hip joints was evaluated one year postoperatively. Results: Complications occurred in 36.56 % of the cases in Group A and 5.91 % of Group B. One year postoperatively, the Singh Index degree distributions of both uninjured and injured femoral necks in Group A had no significant difference compared with those before the operation (P> 0.05 ). In Group B, there was significant difference between one year postoperatively and before operation, and the Singh Index one year after the operation showed better result than that before operation (P< 0.05 ). One year after operation, there was significant difference in the function of injured hip joints between Group A and Group B (P< 0.05 ). Conclusions: Hip fracture in old people should be treated comprehensively according to its internal characteristics, osteoporosis. 展开更多
关键词 Hip fractures OSTEOPOROSIS Comprehensive treatment Old people
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