带血管蒂腓肠肌内侧头肌瓣转移重建髌腱的长期随访

Objective To evaluate the long following-up outcome of the medial gastrocnemius muscle transferring reconstruction the patella tendon after the wide resection of aggressive bone tumors in the proximal tibia. Methods With the 69 patients of the osteogenetic sarcoma in the proximal tibia were treated with the wide resection and reconstruction the patella tendon. After the long following up the knee extensor,function and complications were evaluated. Results With the 69 patients, the 45 survival patients were followed up for the average 68.6 (24-128) months. The local recurrence rate was 8.7%(6/69). The strength of knee extending was in the average of grade 4.2(3.6-5.0), the degree of knee flexion was in the average of 95°(75°-135°), the degree of knee extension was in the average of-2°(0°-12°), the knees of five patients cannot fully extension. The MSTS functional score was in the average of 77% (23.1/30). Conclusion During the limb salvage of the proximal tibial aggressive bone tumors, the medial gastrocnemius muscle transferring reconstruction the patella tendon could offer the knee extension strength; improve the soft tissue coverage and functional results.     

带血管蒂腓肠肌内侧头肌瓣转移重建髌腱的长期随访

Objective To evaluate the long following-up outcome of the medial gastrocnemius muscle transferring reconstruction the patella tendon after the wide resection of aggressive bone tumors in the proximal tibia. Methods With the 69 patients of the osteogenetic sarcoma in the proximal tibia were treated with the wide resection and reconstruction the patella tendon. After the long following up the knee extensor,function and complications were evaluated. Results With the 69 patients, the 45 survival patients were followed up for the average 68.6 (24-128) months. The local recurrence rate was 8.7%(6/69). The strength of knee extending was in the average of grade 4.2(3.6-5.0), the degree of knee flexion was in the average of 95°(75°-135°), the degree of knee extension was in the average of-2°(0°-12°), the knees of five patients cannot fully extension. The MSTS functional score was in the average of 77% (23.1/30). Conclusion During the limb salvage of the proximal tibial aggressive bone tumors, the medial gastrocnemius muscle transferring reconstruction the patella tendon could offer the knee extension strength; improve the soft tissue coverage and functional results.     

Minimally invasive percutaneous plate osteosynthesis through fracture site approach for fracture of both tibia and fibula

Objective： To introduce the experience of treating fracture of both tibia and fibula with micro-invasive percutaneous plate internal fixation through fracture site approach. Methods： The data of 15 patients （11 males and 4 females）, including 14 adults （ aged 22-73 years, mean = 40 years） and 1 child （aged 10 years）, with fracture of both tibia and fibula were studied retrospectively in this study. A small incision was made at the fracture site of tibia. Then reposition was made under direct vision, and internal fixation was employed with steel plates inserting through the small incision. Results： Anatomical reduction was obtained. No complication was found. Union occurred on time in 14 patients. One case healed after a second operation. Conclusions ： Micro-invasive percutaneous plate internal fixation is beneficial to the healing of bone and soft tissues. Without X-ray examination, it is also easy to reach anatomical reduction and make tibial internal fixation with both plates with micro-invasive percutaneous plate internal fixation.     

应用羟基磷灰石喷涂解剖型股骨假体的中期随访结果

Objective To observe the clinical and radiographic outcomes following the THA using a hydroxyapatite-eoated anatomic stem. Methods From 2001 to 2003, 90 total hip arthroplasty were per-formed in 75 patients using a hydroxyapatite-coated anatomic stem. There are 49 males and 26 females, with the mean age of 58.4 years, range from 42 to 68 years. The mean follow-up period was 7.2 years (5 to 8 years). All patients were evaluated clinically using Harris hip score; preoperative and follow-up radiographs were made. Results Forty-eight patients with 56 hips were involved in this study. There were 29 males and 19 females were included. No patients had underwent revision arthroplasty or aseptic loosening. Accord-ing to the Harris hip score, the average hip score increased from 28.23=6.3 before operation to 93.23±4.8 one year after operation and to 91.6±4.5 at the final review. There was significant difference between the Harris scores at final review and preoperative ones, but no difference one year after operation. All patients had ex-cellent or good results. Three cases were found to be associated with thigh pain. All prostheses were well os-seointegrated. Limited proximal femoral osteolysis occurred in two cases, three cases had radiographic evi-dence of osteosclerosis on the tip of the stem, and six cases were found to represent discontinuous radiolu-cent lines surrounding the stem on the radiographs. No stem subsidence and varus/valgus happened. Con-clusion Hydroxyapatite-coated anatomic stem provided favorable clinical and radiographic results after an intermediate duration of follow-up. The prosthesis had achieved reliable bone ingrowths. The long-term re-sults is needed to be confirmed in future.     

53例肝癌切除术后生存20年以上远期随访分析

Objective To clarify the clinicopathological features of patients surviving≥20 years after resection for hepatoceUular carcinoma(HCC).Methods Between 1961 and 1987, a total of 396 patients underwent hepatic resection for HCC.Of the 396 patients, 53(13.4 %) survived ≥20 years and 343(86.6%) <20 years.A comparative study between the two groups was made.Results By March of 2007, 67.6%(36/53) of the patients were still alive and disease-free while 5.7% (3/53) of them died of tumor recurrence or metastasis, 11.3 % (6/537 died of liver failure, 5.70% (3/537 died of other disease, and 9.4% (5/53) were lost during follow-up.Two patients with intraperitoneal rup-tured HCC survived fro 26.6 years and 38.75 years, respectively.Five young patients got married af-ter resection and have had babies.The longest surviving time was 43 years and 2 months.Reresection for recurrence was done in 9 patients and the mean survival was 26 years and 11 months.Reresection for solitary pulmonary metastasis was performed in 3 patients and the mean survival was 29 years and 2 months.Downstaging followed by resection was performed in 4 patients, mean survival being 22 years and 10 months.In comparison with patients surviving <20 years, those surviving ≥20 years were significantly younger(P<0.05) and had a higher incidence of asymptomatic tumors (P<0.01), lower γ-glutanyl transpeptidase levels (P<0.01), lower incidence of liver cirrhosis (P<0.01) ; high-er percentage of smaller tumors (P<0.01), single nodule tumors (P<0.01) and well encapsulated tumors (P<0.01), lower incidence of tumor emboli in portal vein (P<0.01), better differentiation of tumor cells (P<0.05) and higher curative resection rate (P<0.01).Conclusions Early and cura-tive resection are important for improving long-term survival.Long-term follow-up after resection of HCC is very important, and should continue for the remainder of the patient's life.Reresection for re-currence and metastasis is an important approach to improve prognosis.     

53例肝癌切除术后生存20年以上远期随访分析

Objective To clarify the clinicopathological features of patients surviving≥20 years after resection for hepatoceUular carcinoma(HCC).Methods Between 1961 and 1987, a total of 396 patients underwent hepatic resection for HCC.Of the 396 patients, 53(13.4 %) survived ≥20 years and 343(86.6%) <20 years.A comparative study between the two groups was made.Results By March of 2007, 67.6%(36/53) of the patients were still alive and disease-free while 5.7% (3/53) of them died of tumor recurrence or metastasis, 11.3 % (6/537 died of liver failure, 5.70% (3/537 died of other disease, and 9.4% (5/53) were lost during follow-up.Two patients with intraperitoneal rup-tured HCC survived fro 26.6 years and 38.75 years, respectively.Five young patients got married af-ter resection and have had babies.The longest surviving time was 43 years and 2 months.Reresection for recurrence was done in 9 patients and the mean survival was 26 years and 11 months.Reresection for solitary pulmonary metastasis was performed in 3 patients and the mean survival was 29 years and 2 months.Downstaging followed by resection was performed in 4 patients, mean survival being 22 years and 10 months.In comparison with patients surviving <20 years, those surviving ≥20 years were significantly younger(P<0.05) and had a higher incidence of asymptomatic tumors (P<0.01), lower γ-glutanyl transpeptidase levels (P<0.01), lower incidence of liver cirrhosis (P<0.01) ; high-er percentage of smaller tumors (P<0.01), single nodule tumors (P<0.01) and well encapsulated tumors (P<0.01), lower incidence of tumor emboli in portal vein (P<0.01), better differentiation of tumor cells (P<0.05) and higher curative resection rate (P<0.01).Conclusions Early and cura-tive resection are important for improving long-term survival.Long-term follow-up after resection of HCC is very important, and should continue for the remainder of the patient's life.Reresection for re-currence and metastasis is an important approach to improve prognosis.     

53例肝癌切除术后生存20年以上远期随访分析

Objective To clarify the clinicopathological features of patients surviving≥20 years after resection for hepatoceUular carcinoma(HCC).Methods Between 1961 and 1987, a total of 396 patients underwent hepatic resection for HCC.Of the 396 patients, 53(13.4 %) survived ≥20 years and 343(86.6%) <20 years.A comparative study between the two groups was made.Results By March of 2007, 67.6%(36/53) of the patients were still alive and disease-free while 5.7% (3/53) of them died of tumor recurrence or metastasis, 11.3 % (6/537 died of liver failure, 5.70% (3/537 died of other disease, and 9.4% (5/53) were lost during follow-up.Two patients with intraperitoneal rup-tured HCC survived fro 26.6 years and 38.75 years, respectively.Five young patients got married af-ter resection and have had babies.The longest surviving time was 43 years and 2 months.Reresection for recurrence was done in 9 patients and the mean survival was 26 years and 11 months.Reresection for solitary pulmonary metastasis was performed in 3 patients and the mean survival was 29 years and 2 months.Downstaging followed by resection was performed in 4 patients, mean survival being 22 years and 10 months.In comparison with patients surviving <20 years, those surviving ≥20 years were significantly younger(P<0.05) and had a higher incidence of asymptomatic tumors (P<0.01), lower γ-glutanyl transpeptidase levels (P<0.01), lower incidence of liver cirrhosis (P<0.01) ; high-er percentage of smaller tumors (P<0.01), single nodule tumors (P<0.01) and well encapsulated tumors (P<0.01), lower incidence of tumor emboli in portal vein (P<0.01), better differentiation of tumor cells (P<0.05) and higher curative resection rate (P<0.01).Conclusions Early and cura-tive resection are important for improving long-term survival.Long-term follow-up after resection of HCC is very important, and should continue for the remainder of the patient's life.Reresection for re-currence and metastasis is an important approach to improve prognosis.     

53例肝癌切除术后生存20年以上远期随访分析

Objective To clarify the clinicopathological features of patients surviving≥20 years after resection for hepatoceUular carcinoma(HCC).Methods Between 1961 and 1987, a total of 396 patients underwent hepatic resection for HCC.Of the 396 patients, 53(13.4 %) survived ≥20 years and 343(86.6%) <20 years.A comparative study between the two groups was made.Results By March of 2007, 67.6%(36/53) of the patients were still alive and disease-free while 5.7% (3/53) of them died of tumor recurrence or metastasis, 11.3 % (6/537 died of liver failure, 5.70% (3/537 died of other disease, and 9.4% (5/53) were lost during follow-up.Two patients with intraperitoneal rup-tured HCC survived fro 26.6 years and 38.75 years, respectively.Five young patients got married af-ter resection and have had babies.The longest surviving time was 43 years and 2 months.Reresection for recurrence was done in 9 patients and the mean survival was 26 years and 11 months.Reresection for solitary pulmonary metastasis was performed in 3 patients and the mean survival was 29 years and 2 months.Downstaging followed by resection was performed in 4 patients, mean survival being 22 years and 10 months.In comparison with patients surviving <20 years, those surviving ≥20 years were significantly younger(P<0.05) and had a higher incidence of asymptomatic tumors (P<0.01), lower γ-glutanyl transpeptidase levels (P<0.01), lower incidence of liver cirrhosis (P<0.01) ; high-er percentage of smaller tumors (P<0.01), single nodule tumors (P<0.01) and well encapsulated tumors (P<0.01), lower incidence of tumor emboli in portal vein (P<0.01), better differentiation of tumor cells (P<0.05) and higher curative resection rate (P<0.01).Conclusions Early and cura-tive resection are important for improving long-term survival.Long-term follow-up after resection of HCC is very important, and should continue for the remainder of the patient's life.Reresection for re-currence and metastasis is an important approach to improve prognosis.     

53例肝癌切除术后生存20年以上远期随访分析

Objective To clarify the clinicopathological features of patients surviving≥20 years after resection for hepatoceUular carcinoma(HCC).Methods Between 1961 and 1987, a total of 396 patients underwent hepatic resection for HCC.Of the 396 patients, 53(13.4 %) survived ≥20 years and 343(86.6%) <20 years.A comparative study between the two groups was made.Results By March of 2007, 67.6%(36/53) of the patients were still alive and disease-free while 5.7% (3/53) of them died of tumor recurrence or metastasis, 11.3 % (6/537 died of liver failure, 5.70% (3/537 died of other disease, and 9.4% (5/53) were lost during follow-up.Two patients with intraperitoneal rup-tured HCC survived fro 26.6 years and 38.75 years, respectively.Five young patients got married af-ter resection and have had babies.The longest surviving time was 43 years and 2 months.Reresection for recurrence was done in 9 patients and the mean survival was 26 years and 11 months.Reresection for solitary pulmonary metastasis was performed in 3 patients and the mean survival was 29 years and 2 months.Downstaging followed by resection was performed in 4 patients, mean survival being 22 years and 10 months.In comparison with patients surviving <20 years, those surviving ≥20 years were significantly younger(P<0.05) and had a higher incidence of asymptomatic tumors (P<0.01), lower γ-glutanyl transpeptidase levels (P<0.01), lower incidence of liver cirrhosis (P<0.01) ; high-er percentage of smaller tumors (P<0.01), single nodule tumors (P<0.01) and well encapsulated tumors (P<0.01), lower incidence of tumor emboli in portal vein (P<0.01), better differentiation of tumor cells (P<0.05) and higher curative resection rate (P<0.01).Conclusions Early and cura-tive resection are important for improving long-term survival.Long-term follow-up after resection of HCC is very important, and should continue for the remainder of the patient's life.Reresection for re-currence and metastasis is an important approach to improve prognosis.     

Clinical observation of tempofilter Ⅱ inferior vena cava filter in the prevention of pulmonary embolism in patients with proximal deep-vein thrombosis

Objective The aim of this study was to evaluate our experience with the retrievable Tempofilter Ⅱ inferior vena cava (IVC ) filter with regard to insertion, efficiency, ease of retrieval, and any associated complications. Methods A retrospective review was performed of 112 patients (44 female,64 male,mean age 52. 3 years) who underwent Tempofilter Ⅱ IVC filter insertion. Filter insertion was successful in all patients. The filter was placed in via the jugular vein of 112 cases with acute deep vein thrombosis (DVT) and (or) PE;after drug treatment, it was observed whether there existed PE symptoms and if the change of the filter location occurred and associated complications. Results All the inferior vena cana filters were successfully emplaced,and DVT responded well to the filters;no clinical relevant pulmonary embolism occurred;The mean dwell time of successfully retrieved filters was 19. 3 days ( range 8-69 days). The thrombus was trapped in 54 cases (48. 2% ). One vena cana filter was escaped. Conclusion Tempofilter Ⅱ vena cana filter is of exact curative effect in the p revention of PE and high value of clinical application.     

肿瘤型假体无菌性松动翻修术后疗效观察

目的探讨采用普通长柄假体或同种异体骨假体复合物(allograft-prosthesis composite,APC)翻修治疗肿瘤型假体无菌性松动的疗效。方法 2002年1月-2008年6月,收治14例肿瘤型假体无菌性松动患者。男8例,女6例;年龄21～70岁,平均43.9岁。肿瘤部位:股骨远端8例,股骨近端2例,胫骨近端4例。假体置换术后6～31年出现患肢疼痛,负重和行走时加重;6例出现患肢短缩畸形。术前参照美国骨与软组织肿瘤协会(MSTS)功能评分系统行关节功能评分为(16.36±1.50)分。X线片检查见假体明显松动和下沉。出现症状至入院时间为3～9年,平均4.5年。7例骨量严重丢失(骨皮质厚度减少>50%)、假体下沉>2 cm、假体穿破骨皮质或即将穿破骨皮质者采用APC翻修;7例骨量丢失不严重(骨皮质厚度减少<50%)者,采用订制普通长柄假体翻修。结果患者切口均Ⅰ期愈合;2例出现腓总神经一过性麻木,对症治疗后3个月内恢复。患者术后均获随访,随访时间2年2个月～7年,平均3.6年。翻修术后患者术前疼痛症状均缓解,关节功能改善。术后12个月MSTS功能评分为(23.43±2.56)分,与术前比较差异有统计学意义(t=8.910,P=0.024)。X线片检查示,术后12个月2例采用普通长柄假体翻修患者出现骨水泥周围无症状透亮线,无假体松动和周围感染等并发症;其余患者未见明显异常。结论肿瘤型假体无菌性松动后再次行翻修重建肢体功能可行,根据患者骨量丢失情况选择APC或普通长柄假体翻修,可获较好疗效。     

Prosthetic reconstruction for tumors of the distal tibia. Report of two cases

Prosthetic reconstruction in two patients with malignant bone tumors of the distal tibia was conducted. The diagnoses were metastatic bone tumor in one patient and low grade central osteosarcoma in another. The mean duration of follow-up was 5.5 years (3 and 8 years). Reconstruction was achieved using custom-made prosthesis (JMM, Japan Medical Materials), which replaced the distal tibia. In the patient with metastasis, local recurrence occurred 8 months after the primary surgery and the recurrent tumor was resected. Both patients were free from neoplastic disease at the latest follow-up. The average functional scores according to the system of the Musculoskeletal Tumor Society were 25 and 23. Custom-made prostheses allow an early return to functional weight-bearing without major complications. This technique provides a safe and effective method of stabilization for properly selected malignant tumors of the distal tibia.     

肿瘤型假体重建膝关节周围原发性肿瘤切除后骨缺损

目的总结膝关节周围原发性骨肿瘤保肢手术中人工关节重建的疗效和并发症。方法回顾性分析我院1995年12月至2005年12月83例应用肿瘤型假体重建膝关节周围骨肿瘤切除后骨缺损的临床资料。其中骨肉瘤58例,多中心骨肉瘤2例,皮质旁骨肉瘤1例,恶性纤维组织细胞瘤4例,骨巨细胞瘤13例,平滑肌肉瘤1例,尤文肉瘤2例,软骨肉瘤2例。根据骨缺损重建部位分组：股骨下端组44例,胫骨上端组34例,全股骨置换组5例。结果所有患者均获得随访,随访时间12～130个月,平均41个月。局部复发6例,2例晚期感染,假体松动2例,无假体断裂;假体3、5年生存率分别为88．2％、82．1％。41例植骨患者形成皮质外骨桥。肢体肌肉骨骼肿瘤外科治疗重建术后功能评分：股骨下端组19．0—29．0分,平均25．0分;胫骨上端组17．0—28．0分,平均24．4分;全股骨置换组16．0—21．0分,平均19．0分。股骨下端组和胫骨上端组功能优于全股骨置换。结论肿瘤型人工关节重建膝关节周围骨肿瘤并发症发生率低,关节功能良好。     

Kotz modular femur and tibia replacement: 28 tumor cases followed for 3 (1-8) years

In the period 1984-1991, 33 lower limb reconstructions were performed with an uncemented Kotz modular femur tibia reconstruction (KMFTR) prosthesis after resection of 32 malignant bone tumors and 1 benign giant cell tumor. Tumor localization was proximal femur in 12, distal femur in 17, and proximal tibia in 4. The mean age of the patients was 38 years. 28 patients with a minimum follow-up of 1 year were studied after 3 (1-8) years. 7 patients were reoperated because of complications. Good or excellent results were obtained in 6 of the 10 proximal and 13 of the 14 distal femur reconstructions. In 2 of the 4 patients undergoing combined distal femur and proximal tibia resection, a deep infection developed, and above-knee amputation was performed. One local recurrence occurred after proximal femur resection.     

肿瘤型人工关节重建下肢骨肉瘤切除后的骨缺损

目的总结应用肿瘤型人工关节重建下肢骨肉瘤切除后骨缺损的效果及并发症。方法1997年7月~2004年7月共对167例下肢骨肉瘤实施广泛性切除后人工假体重建保肢术,100例获得随访。其中男56例,女44例。年龄13~57岁。股骨近端5例,股骨远端57例,胫骨近端38例。Enneking分期A期3例,B期85例,期12例。使用国产假体71例,进口假体29例。17例患者采用灭活肿瘤骨结合人工假体复合重建缺损,21例采用异体骨人工关节复合体,余62例采用人工假体进行重建。所有成骨肉瘤患者术前均行1~2个疗程规范化疗,术后3~5个疗程化疗。术后采用MSTS保肢评分系统对随访患者进行功能评价。结果所有患者获随访1~8年,中位随访时间3.5年。人工关节3年生存率为81.8%,5年生存率为65%。6例假体折断,13例假体迟发性感染,2例假体松动,5例移植物与宿主骨接合处不愈合,2例异体骨吸收,2例假体下沉,1例骨折。7例于术后6个月~2年内肿瘤局部复发,其中软组织肿瘤复发4例,接受肿瘤再切除治疗;另3例接受截肢手术。患者MSTS评分平均为23.30±5.17。肢体功能优62例,良27例,中7例,差4例,优良率为89%。结论与其他保肢重建方法比较,肿瘤型人工关节能保留最好的关节功能。但并发症发生率仍较高,人工关节的设计及加工有待于进一步改进。     

上胫腓关节切除在胫骨近端骨肉瘤保肢中的应用

目的探讨上胫腓关节切除在胫骨近端骨肉瘤保肢中的应用。方法1995年8月-2004年1月11例累及上胫腓关节的胫骨近端骨肉瘤患者在新辅助化疗支持下行包括上胫腓关节的胫骨骨肿瘤整块切除、人工膝关节置换、腓肠肌瓣移位重建伸膝装置及修复软组织缺损。其中男性7例,女性4例,年龄14～23岁,平均18岁。Enneking分期均为ⅡB期。结果II例患者均获得随访,随访时间2～9年,平均59个月。因肺转移死亡3例,肺转移带瘤存活1例,局部复发1例行截肢术;伤口皮肤坏死1例,下肢深静脉血栓2例,腓总神经牵拉损伤2例。术后膝关节功能MSTS93评分55％～86％,平均为70％;膝关节活动度0°～120°,平均为85°,伸直延迟均在0°～20°。结论对累及上胫腓关节的胫骨近端骨肉瘤在新辅助化疗支持下积极行包括上胫腓关节的胫骨骨肉瘤整块切除、定制人工膝关节置换术,手术疗效满意,但应注意相关并发症的防治。     

Limb salvage surgery for primary bone sarcoma of the lower extremities: Long-term consequences of endoprosthetic reconstructions

Background: Adjuvant chemotherapy and endoprosthetic replacement for bone sarcomas of the lower extremity is well established. The specific long-term consequences of these endoprosthetic reconstructions for the patient's affected limb are unknown. Method: The oncologic results and the survival of the endoprostheses were reviewed in 32 patients with primary bone sarcoma of the femur or proximal tibia. There were 26 high-grade sarcomas, and 6 low-grade sarcomas. A proximal femoral endoprosthesis was used for reconstruction in 4 patients, a total or push-through femoral endoprosthesis in 11 patients, a distal femoral endoprosthesis in 15 patients, and a proximal tibial endoprosthesis in two patients. Results: Median survival was 10 years (range, 1.1 to 18.9 years) for patients with high-grade sarcoma, and 8.1 years (range, 7.1 to 10 years) for patients with low-grade sarcomas. Distant metastases developed in seven patients (22%), all with stage IIB sarcoma, with concomitant local recurrence in 3 patients (9%). Five-year overall and disease-free survival rates for high-grade sarcomas were 81% and 73%, respectively. The overall endoprosthetic survival rate was 87% at 5 years, 80% at 10 years, and 56% at 15 years. Median follow-up of the original endoprostheses was 8.3 years (range, 0.6 to 18.7 years). Endoprosthesis-related complications occurred in 13 patients (41%); most complications were mechanical failures. The highest complication rate was found in distal femoral replacements (60%); amputation was necessary in both patients treated with a proximal tibial endoprosthesis. Five endoprostheses (16%) were revised. An amputation of the involved limb was performed in four patients (13%): in two patients because of local recurrence and in the other two patients because of infection. For patients alive at follow-up, the median functional Enneking evaluation score was 22 points (range, 12 to 28 points), with the highest functional scores in patients with a distal femoral endoprosthesis, and the lowest functional scores in patients with total or push-through femoral replacements. Conclusion: Endoprosthetic reconstructions gave satisfying functional results in most patients after long-term survival. However, the proximal tibial and distal femoral endoprosthesis are particularly at risk for long-term endoprosthetic complications requiring additional surgical procedures.Presented at the Ninth International Symposium of the International Society of Limb Salvage (ISOLS), New York, September 11, 1997.     

Reconstruction of the extensor mechanism after proximal tibia endoprosthetic replacement

The proximal tibia is a difficult area in which to perform a wide resection of a bone tumor. This difficulty is due to the intimate relationship of tumor in this location to the nerves and blood vessels of the leg, inadequate soft tissue coverage after endoprosthetic reconstruction, and the need to reconstruct the extensor mechanism. Competence of the extensor mechanism is the major determinant of functional outcome of these patients. Between 1980 and 1997, 55 patients underwent proximal tibia resection with endoprosthetic reconstruction for a variety of malignant and benign-aggressive tumors. Reconstruction of the extensor mechanism included reattachment of the patellar tendon to the prosthesis with a Dacron tape, reinforcement with autologous bone-graft, and attachment of an overlying gastrocnemius flap. All patients were followed for a minimum of 2 years; 6 patients (11%) had a transient peroneal nerve palsy, 4 patients (7.2%) had a fasciocutaneous flap necrosis, and 2 patients (3.6%) had a deep wound infection. Full extension to extension lag of 20 degrees was achieved in 44 patients, and 8 patients required secondary reinforcement of the patellar tendon. Function was estimated to be good to excellent in 48 patients (87%). Reattachment of the patellar tendon to the prosthesis and reinforcement with an autologous bone-graft and a gastrocnemius flap are reliable means to restore extension after proximal tibia endoprosthetic reconstruction.     

Surgical treatment of skeletal metastases in proximal tibia: a multicenter case series of 74 patients

Background and purpose — The proximal tibia is a rare site for metastatic bone disease and is a challenging anatomical site to manage due to the proximity to the knee joint and poor soft tissue envelope. We investigated implant survival and complications of different surgical strategies in the treatment of proximal tibia pathological fractures.Patients and methods — The study comprised a 4 medical center, retrospective analysis of 74 patients surgically treated for metastases of the proximal tibia. Patient records were reviewed to identify outcome, incidence, and type of complications as well as contributing factors.Results — Reconstruction techniques comprised cement-augmented osteosynthesis (n = 33), tumor prosthesis (n = 31), and total knee arthroplasty with long cemented stems (n = 10). Overall implant survival was 88% at 6 months and 1 year, and 67% at 3 years. After stratification by technique, the implant survival was 82% and 71% at 1 and 3 years with tumor prosthesis, 100% at 1 and 3 years with total knee arthroplasty, and 91% at 1 year and 47% at 3 years with osteosynthesis. Preoperative radiotherapy decreased implant survival. Complications were observed in 19/74 patients. Treatment complications led to amputation in 5 patients.Interpretation — In this study, the best results were seen with both types of prothesis reconstructions, with good implant survival, when compared with treatment with osteosynthesis. However, patients treated with tumor prosthesis showed an increased incidence of postoperative infection, which resulted in poor implant survival. Osteosynthesis with cement is a good alternative for patients with short expected survival whereas endoprosthetic replacement achieved good medium-term results.

The most common site for skeletal metastases requiring surgical intervention is the proximal femur, which accounts for approximately 65% of all cases. In contrast, the tibia accounts for only 3% of pathological fractures requiring surgery, mostly commonly in the proximal third (Ratasvuori et al. 2013). Due to the proximity of the knee joint and the poor soft tissue envelope in the proximal tibia, the management of metastatic deposits and pathological fractures in this region can be challenging.Given the scarcity of this metastasis location, there is a paucity of evidence relating to the outcomes of surgical treatment of pathological fractures of the proximal tibia. In this retrospective case series we assessed the advantages and disadvantages of different surgical reconstructions, looking in particular at implant survival, the incidence of complications, and the possible factors that may affect these outcomes.     

累及腓骨的胫骨近端恶性肿瘤的保肢治疗

 目的 回顾性分析累及腓骨的胫骨近端恶性肿瘤患者病历资料,探讨其保肢技术,总结肿瘤学结果、并发症及功能情况。方法 自1998年11月至2010年2月,共有32例胫骨近端恶性肿瘤累及腓骨的患者接受保肢治疗,男21例,女11例;年龄10~66岁,平均23.4岁。骨肉瘤23例,软骨肉瘤5例,恶性骨巨细胞瘤1例,软组织肉瘤3例。全部病例接受包括腓骨上段在内的肿瘤整块切除,术中结扎并切断胫前血管14例,修补胫后血管1例,结扎并切断胫前血管并修补胫后血管2例、置换3例。切除腓总神经4例,腓深神经5例。采用关节假体置换24例,瘤段骨灭活再植假体复合置换5例,瘤段骨灭活再植3例。软组织覆盖采用腓肠肌内侧头肌瓣转移14例、外侧头肌瓣转移1例。结果 随访时间11~159个月,平均39.4个月。6例(18.8%)患者出现肿瘤局部复发。患者总体5年生存率 51.2%,14例死于肿瘤转移、2例带瘤生存、16例无瘤生存。15例(46.9%)发生各种并发症22例次,术后血管危象致患肢缺血4例,腓总神经麻痹12例,伤口表浅感染或积液4例,深部感染1例,假体周围骨折1例。国际骨肿瘤协会(Musculoskeletal Tumor Society, MSTS 93)评分平均21.6分(72%)。结论 胫骨近端恶性肿瘤累及上胫腓关节或腓骨时,应严格掌握适应证、仔细操作,以期获得足够的外科边界。尽管有一定的并发症发生,但是多数患者可以获得较好的术后功能。