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。     

股骨下端胫骨上端骨肿瘤切除后骨缺损的修复重建

报道57例股骨下端胫骨上端骨肿瘤切除后,采用吻合血管的腓骨移植、同种异体半关节移植,髓内针加植骨融合,瘤段灭活再植,人工膝关节移植以及骨水泥填塞修复大段骨缺损。平均随访4.3年,除4例截肢外,均成功。讨论了重建方法的选择和适应证。     

髌骨和髂骨移植修复膝部骨巨细胞瘤致大块骨缺损

目的 探讨髌骨和髂骨移植对股骨下端和胫骨上端大块骨缺损修复的治疗效果.方法 股骨下端和胫骨上端骨巨细胞瘤患者14例,男8例,女6例;年龄20～42岁,平均33.9岁;病史2～12个月,平均5.6个月;股骨下端6例,胫骨上端8例.按Ennecking外科分期,2期11例,3期3例.游离髌骨移植8例,带肌蒂髌骨移植2例,髂骨移植4例.股骨和胫骨肿瘤侵犯一侧髁软骨面时用游离或带肌蒂髌骨移植,胫骨肿瘤同时侵犯髁间部时用髂骨移植,修复和重建膝关节部骨缺损.结果 随访时间3个月～11年,平均4.5年.根据国际保肢学会功能评分标准,优3例,良8例,可2例,差1例.游离髌骨移植者关节功能较好.术后主要并发症为关节活动范围减小(活动范围,40°～120°,平均82°),关节不适,肌力下降,疼痛.带肌蒂髌骨移植者术后伸膝肌力有不同程度地下降,但随着时间的延长有一定的恢复.游离髌骨移植者术后伸膝肌力下降不明显.髂骨移植患者术后关节退行性改变明显.结论 膝关节周围骨巨细胞瘤侵犯关节软骨时,行包括肿瘤在内的股骨或胫骨一侧髁切除后,可以用髌骨和髂骨移植修复和重建骨缺损.     

同种异体半关节移植治疗股骨远端肿瘤

目的 对大段异体骨移植用于骨肿瘤保肢治疗及其相关问题进行分析讨论。方法采用大段异体骨修复骨肿瘤瘤段切除后骨缺损5例，术后X线及同位素骨扫描评定骨愈合，并评估其功能恢复情况。结果手术后3—6个月在X线片显示牢固的生物固定（坚强的外骨痂或已骨性连接）、^99mTc—MDP骨扫描图像显示异体骨早期代谢活跃，2年后逐渐恢复正常。结论 同种异体骨半关节移植治疗股骨远端肿瘤术后观察移植骨与自体骨愈合，关节功能重建方面到达良好表现。     

大段同种异体半关节移植远期疗效分析

目的：探讨分析同种异体半关节移植的临床应用及远期疗效。方法：回顾分析应用同种异体半关节移植治疗近关节骨肿瘤切除后遗留大块骨缺损，就随访资料完整，且随访时间超过5年的70例进行临床分析，异体骨移植长度8－25cm。普通髓内固定25例，交锁髓内钉固定21例，螺栓固定22例，钢板固定2例。结果：70例患者得到随访，平均随访时间10．5年（5－22年）。异体骨愈合68例，不愈合2例。主要并发症，肿瘤避部复发8例，感染7例，骨折3例，关节面塌陷6例，关节强直2例。关节功能按Mankin标准评定，优23例，良19例，中12例，满意率78．2％，结论：同种异体半关节移植是修复骨肿瘤切除后骨缺损的有效手段，但应严格掌握其适应证。     

吻合血管节段性腓骨移植修复邻近关节巨大腔性骨缺损

目的：邻近关节骨肿瘤或肿瘤样病变切除后的修复。方法：仿据排骨血供的特性,设计吻合血管腓骨多节段移植,修复胫骨上端、股骨下端及股骨近端骨缺损。结果：临床应用10例,经术后3个月随访,移植骨愈合良好,关节功能恢复令人满意。结论：采用该方法,修复邻近关节骨肿瘤切除后巨大腔性骨缺损,远优于吻合血管或单纯松质骨植入,从根本上避免或替代了异体半关节移植。     

全膝关节置换术中胫骨近端骨缺损的处理

目的探讨初次人工全膝关节置换术中胫骨近端骨缺损的植骨方法和疗效。方法2001年10月至2006年3月，在23例（42膝）初次人工全膝关节置换术中采用自体或异体骨移植修复胫骨近端骨缺损，男5例（9膝），女18例（33膝）。骨关节炎19例（35膝），类风湿性关节炎2例（4膝），大骨节病1例（2膝），关节结核1例（1膝）。非包容型骨缺损22例40膝，包容型骨缺损1例2膝。参照Engh ＆ Parks分类法，T1级5膝，T2级33膝，B级4膝。自体髂骨2例3膝，1例2膝为类风湿性关节炎，包容型，为T2级，骨移植起填充作用；另1例1膝为左膝骨关节炎，非包容型，为T3级。异体冷冻骨1例1膝为膝关节结核，同时股骨外髁和胫骨内侧平台骨缺损，为T3级，行大块骨移植，螺钉固定。自体股骨内髁加异体冻于骨移植修复胫骨内侧平台骨缺损1例1膝，为T3级。其余19例37膝均为自体股骨内髁或胫骨外侧平台修整后移植，修复胫骨内侧平台骨缺损，其中螺钉固定14膝。结果术后随访38．2（3-56）个月。所有患者术前均有内或外翻畸形和屈曲挛缩畸形，术后畸形得到矫正，疼痛消失；3个月后均可弃拐行走，生活可以自理。膝关节HSS评分由术前15.3（10-26）分提高到术后86（79-95）分。膝关节活动范围由术前74．4°（0°--90°）提高到术后109．4°80°-135°）。1例于术后3年死于心肺功能衰竭。术后X线复查1年以上者20例（39膝），胫股角为5°-7°，平均6．4°。结论骨移植尤其是自体骨移植在初次人工全膝关节置换术中可以恢复胫骨近端的完整性，为胫骨假体提供初始稳定性，具有简便、实用、经济实惠等优点；可以保留足够的骨量，为以后的翻修提供良好的基础。     

大段同种异体骨与关节移植术后异体骨骨折

目的;分析肢体恶性骨肿瘤患者接受大段同种异体骨与关节移植术后异体骨骨折的发生原因和处理方法。方法：106例患者采取不同手术地异体骨与关节移植术,平均随访36．3个月。结果：异体骨干骨折4例,关节髁部骨折13例,骨折发生率为16．0％,骨折更易发生于使用加压钢板和自制内锁髓内钉固定及接受异体半关节移植的患者（P＜0．05）,异体骨骨折后一般需更换异体骨及内固定或行人工关节置换术。结论：异体骨骨折是大段异体骨移植术后常见并发症,均衡,坚固的髓内固定可减少骨折的发生,保留自体髁部骨质和关节面的异体骨段移植及异体骨段复合人工关节置换是较理想的手术方式。     

人工关节假体复合大段同种异体骨移植重建肢体功能

目的 探讨采用复合人工关节假体大段同种异体骨移植的方法治疗肢体恶性骨肿瘤的手术原理及效果。方法 骨肿瘤患者１６例,年龄１９岁－６０岁,其中骨肉瘤４例,软骨肉瘤２例,恶性骨巨细胞瘤３例,纤维肉瘤３例,其它恶性骨肿瘤４例,肢体功能重建方法包括：复合股骨近端的全髋关节置换术３例,复合股骨近端的双极人工股骨头置换术７例,复合股骨下端或胫骨上端的全膝关节置换６例,结果 本组１６例经１．５－５．０年随访,１例     

自体骨联合异体骨开放植骨治疗胫骨远端感染性骨缺损的疗效观察

目的评价采用自体松质骨联合同种异体骨开放植骨治疗胫骨远端大段感染性骨缺损的可行性及临床效果。方法自2010-01—2013-01,采用自体骨联合异体骨（2∶1）开放植骨治疗10例胫骨远端感染性骨缺损,骨缺损长度平均5.6（3-8）cm。先用外固定架固定骨折,调整恢复肢体长度及力线,彻底清创,取自体髂骨松质骨剪成直径约5 mm的微粒与同种异体骨2：1混合植入骨缺损处,使骨质稍高于皮肤并超过骨折远近端各1cm。结果 10例获得平均12（9-18）个月随访。术后平均7（5-9）周移植骨质表面被肉芽组织覆盖,7例（1例双侧）创面于术后8-11周自行瘢痕愈合,3例于术后9周行植皮术闭合创面。9例（1例双侧）骨折完全愈合,骨折愈合时间平均8（6-12）个月;1例因胫骨交锁髓内钉取出术后3个月再次骨折伴骨缺损（约8cm）,且术后骨折端不稳、骨缺损较大导致假关节形成,骨折不愈合。结论自体松质骨联合同种异体骨开放植骨是治疗胫骨远端大段感染性骨缺损的一种简单、有效方法。     

冷冻异体骨移植治疗肢体骨巨细胞瘤骨缺损77例临床报告

目的评价应用异体骨重建原发骨巨细胞瘤切除后骨缺损的肢体功能及并发症的发生情况。方法对1992年至2002年进行外科治疗、有完整随访资料的77例骨巨细胞瘤进行回顾分析。外科治疗依据Enneking外科分期原则,进行了肿瘤切除、异体骨重建。采用Mankin评分方法进行功能评定。结果平均随访时间35.3个月。76例患者存活,1例死亡。局部复发率14.1％,肺转移率5.1％,骨不愈合14.1％,关节不稳定9％,内固定折断、感染率及骨折均为6.4％。治疗满意率83.2％,最终保肢率98.7％。结论采用深低温保存异体骨进行骨巨细胞瘤切除后骨缺损的修复重建是一种有效方法;同时,异体骨移植也是一种有较高并发症发生率的重建方法,降低并发症可提高肢体功能;肿瘤复发是影响治疗满意率的主要影响因素,恰当的外科边界是治疗骨巨细胞瘤的关键。     

带血管腓骨复合异体骨修复长骨肿瘤切除后骨缺损

目的 探讨带血管腓骨复合异体骨重建长骨恶性肿瘤切除后骨缺损的临床结果.方法 2006年4月至2009年10月对19例四肢长骨恶性骨肿瘤患者行保肢手术,男11例,女8例;年龄11～37岁,平均(18.5±7.6)岁.肱骨5例、股骨7例、胫骨7例.肿瘤切除后骨缺损长度(13.2±4.3)cm,采用带血管自体腓骨复合大段异体...     

Does the Addition of a Vascularized Fibula Improve the Results of a Massive Bone Allograft Alone for Intercalary Femur Reconstruction of Malignant Bone Tumors in Children?

BackgroundMassive bone allograft with or without a vascularized fibula is a potentially useful approach for femoral intercalary reconstruction after resection of bone sarcomas in children. However, inadequate data exist regarding whether it is preferable to use a massive bone allograft alone or a massive bone allograft combined with a vascularized free fibula for intercalary reconstructions of the femur after intercalary femur resections in children. Because the addition of a vascularized fibula adds to the time and complexity of the procedure, understanding more about whether it reduces complications and improves the function of patients who undergo these resections and reconstructions would be valuable for patients and treating physicians.Questions/purposesIn an analysis of children with bone sarcomas of the femur who underwent an intercalary resection and reconstruction with massive bone allograft with or without a vascularized free fibula, we asked: (1) What was the difference in the surgical time of these two different surgical techniques? (2) What are the complications and number of reoperations associated with each procedure? (3) What were the Musculoskeletal Tumor Society scores after these reconstructions? (4) What was the survival rate of these two different reconstructions?MethodsBetween 1994 and 2016, we treated 285 patients younger than 16 years with a diagnosis of osteosarcoma or Ewing sarcoma of the femur. In all, 179 underwent resection and reconstruction of the distal femur and 36 patients underwent resection and reconstruction of the proximal femur. Additionally, in 70 patients with diaphyseal tumors, we performed total femur reconstruction in four patients, amputation in five, and a rotationplasty in one. The remaining 60 patients with diaphyseal tumors underwent intercalary resection and reconstruction with massive bone allograft with or without vascularized free fibula. The decision to use a massive bone allograft with or without a vascularized free fibula was probably influenced by tumor size, with the indication to use the vascularized free fibula in longer reconstructions. Twenty-seven patients underwent a femur reconstruction with massive bone allograft and vascularized free fibula, and 33 patients received massive bone allograft alone. In the group with massive bone allograft and vascularized fibula, two patients were excluded because they did not have the minimum data for the analysis. In the group with massive bone allograft alone, 12 patients were excluded: one patient was lost to follow-up before 2 years, five patients died before 2 years of follow-up, and six patients did not have the minimum data for the analysis. We analyzed the remaining 46 children with sarcoma of the femur treated with intercalary resection and biological reconstruction. Twenty-five patients underwent femur reconstruction with a massive bone allograft and vascularized free fibula, and 21 patients had reconstruction with a massive bone allograft alone. In the group of children treated with massive bone allograft and vascularized free fibula, there were 17 boys and eight girls, with a mean ± SD age of 11 ± 3 years. The diagnosis was osteosarcoma in 14 patients and Ewing sarcoma in 11. The mean length of resection was 18 ± 5 cm. The mean follow-up was 117 ± 61 months. In the group of children treated with massive bone allograft alone, there were 13 boys and eight girls, with a mean ± SD age of 12 ± 2 years. The diagnosis was osteosarcoma in 17 patients and Ewing sarcoma in four. The mean length of resection was 15 ± 4 cm. The mean follow-up was 130 ± 56 months. Some patients finished clinical and radiological checks as the follow-up exceeded 10 years. In the group with massive bone allograft and vascularized free fibula, four patients had a follow-up of 10, 12, 13, and 18 years, respectively, while in the group with massive bone allograft alone, five patients had a follow-up of 10 years, one patient had a follow-up of 11 years, and another had 13 years of follow-up. In general, there were no important differences between the groups in terms of age (mean difference 0.88 [95% CI -0.6 to 2.3]; p = 0.26), gender (p = 0.66), diagnosis (p = 0.11), and follow up (mean difference 12.9 [95% CI-22.7 to 48.62]; p = 0.46). There was a difference between groups regarding the length of the resection, which was greater in patients treated with a massive bone allograft and vascularized free fibula (18 ± 5 cm) than in those treated with a massive bone allograft alone (15 ± 4 cm) (mean difference -3.09 [95% CI -5.7 to -0.4]; p = 0.02). Complications related to the procedure like infection, neurovascular compromise, and graft-related complication, such as fracture and nonunion of massive bone allograft or vascularized free fibula and implant breakage, were analyzed by chart review of these patients by an orthopaedic surgeon with experience in musculoskeletal oncology. Survival of the reconstructions that had no graft or implant replacement was the endpoint. The Kaplan-Meier test was performed for a survival analysis of the reconstruction. A p value less than 0.05 was considered significant.ResultsThe surgery was longer in patients treated with a massive bone allograft and vascularized free fibula than in patients treated with a massive bone allograft alone (10 ± 0.09 and 4 ± 0.77 hours, respectively; mean difference -6.8 [95% CI -7.1 to -6.4]; p = 0.001). Twelve of 25 patients treated with massive bone allograft and vascularized free fibula had one or more complication: allograft fracture (seven), nonunion (four), and infection (four). Twelve of 21 patients treated with massive bone allograft alone had the following complications: allograft fracture (five), nonunion (six), and infection (one). The mean functional results were 26 ± 4 in patients with a massive bone allograft and vascularized free fibula and 27 ± 2 in patients with a massive bone allograft alone (mean difference 0.75 [95% CI -10.6 to 2.57]; p = 0.39). With the numbers we had, we could not detect a difference in survival of the reconstruction between patients with a massive bone allograft and free vascularized fibula and those with a massive bone allograft alone (84% [95% CI 75% to 93%] and 87% [95% CI 80% to 94%], respectively; p = 0.89).ConclusionWe found no difference in the survival of reconstructions between patients treated with a massive bone allograft and vascularized free fibula and patients who underwent reconstruction with a massive bone allograft alone. Based on this experience, our belief is that we should reconstruct these femoral intercalary defects with an allograft alone and use a vascularized fibula to salvage the allograft only if a fracture or nonunion occurs. This approach would have resulted in about half of the patients we treated not undergoing the more invasive, difficult, and risky vascularized procedure.Level of Evidence Level III, therapeutic study.     

Reconstruction of the pelvis after tumor resection in children and adolescents

Thirty patients younger than 19 years with malignant bone tumors of the pelvis were treated by limb salvage surgery between 1970 and 1998. Functional and oncologic results were reviewed retrospectively. In 10 patients the defect was reconstructed by an endoprosthesis and in 20 patients reconstruction by autologous grafts (n = 7), allograft and prosthesis combinations (n = 2), bone cement reconstruction (n = 1), iliosacral arthrodesis (n = 1), modified Girdlestone procedure (n = 3), or resection without reconstruction (n = 6) was done. Three and one-half reoperations per patient were necessary postoperatively after allograft reconstruction, 2.5 reoperations per patient were necessary after endoprosthetic reconstruction, and 0.8 reoperations per patient were necessary after other or no reconstruction. After a mean followup of 52 months (range, 2-241 months), 17 patients were alive, 15 of whom were continuously disease-free, and 13 patients had died of their disease. Functional ratings were 81% after autograft, 73% after allograft, and 60% after endoprosthetic reconstruction. Defect reconstruction varied according to the type of resection. Type I resections were best reconstructed by biologic methods. Endoprosthetic reconstruction after periacetabular resection with the advantage of preservation of a functional hip and body integrity was associated with a high rate of complications and reoperations. Its role compared with allograft reconstruction, modified Girdlestone procedure, or no reconstruction requires additional investigation.     

复合骨移植修复骨肿瘤切除后大段骨关节缺损

目的 报道复合骨移植修复骨肿瘤切除后大段骨关节缺损的临床疗效。方法 2001年1月-2002年12月应用带监测皮岛的自体腓骨与大段同种异体深低温冷冻骨关节复合移植修复骨肿瘤切除后大段骨关节缺损10例。结果 10例均得到随访，随访时间5～24个月。移植的自体腓骨长度最长28cm，最短15cm。8例在术后3个月即有影像学骨性愈合，10例均于术后半年完全负重和邻近关节自由活动，术后超过1年的5例均已拆除内固定，术后1年均完全愈合。结论 带监测皮岛的自体腓骨与大段同种异体深低温冷冻骨关节复合移植是修复骨肿瘤切除后大段骨关节缺损的有效且可靠的方法，可用于骨肿瘤保肢术中。     

髂骨翼肿瘤的切除与重建

目的 探讨髂骨翼肿瘤切除及重建方式。方法1998年7月至2004年7月,61例髂骨翼肿瘤患者接受髂骨肿瘤切除重建手术。其中男38例,女23例;年龄12～78岁,平均43岁。根椐Enneking骨盆肿瘤分区：肿瘤累及Ⅰ区36例,Ⅰ、Ⅱ区17例,Ⅰ、Ⅳ区8例。肿瘤切除术后,检查骨缺损的大小,将钉棒系统应用于髂骨肿瘤切除后的缺损重建中。对于肿瘤累及Ⅳ区的患者,行钛网杯重建髋臼顶及全髋置换术。对于儿童患者,采用植骨或斯氏针＋骨水泥固定。结果61例髂骨肿瘤切除的患者中48例患者获得随访,随访时间为16个月至6年,平均43个月。其中33例存活,无肿瘤局部复发迹象;15例死亡。36例行Ⅰ区肿瘤切除的患者中,19．4％（7／36）出现局部复发;17例行Ⅰ、Ⅱ区肿瘤切刮、骨水泥填充、髋臼重建的患者中,35．3％（6／17）出现局部复发;8例行Ⅰ、Ⅳ区肿瘤切除的患者中,1例死于围手术期,50．0％（4／8）局部复发。功能结果：36例行Ⅰ区肿瘤切除的患者,术后有正常行走功能。17例行Ⅰ、Ⅱ区肿瘤刮除、骨水泥填充、髋臼顶重建、人工髋关节置换的患者,术后髋关节功能基本正常。结论可将钉棒系统应用于成人患者髂骨肿瘤切除后的缺损重建中,维持骨盆环的完整。对于儿童的髂骨肿瘤切除后的重建,应尽量采用比较简单的固定。可应用异体骨或自体髂骨（取自残存的部分髂骨）植于髂骨颈与骶骨翼之间,用加压螺丝钉固定。     

Ankle arthrodesis with bone graft after distal tibia resection for bone tumors

BACKGROUND: Treatment of distal tibial tumors is challenging due to the scarce soft tissue coverage of this area. Ankle arthrodesis has proven to be an effective treatment in primary and post-traumatic joint arthritis, but few papers have addressed the feasibility and techniques of ankle arthrodesis in tumor surgery after long bone resections. MATERIALS AND METHODS: Resection of the distal tibia and reconstruction by ankle fusion using non-vascularized structural bone grafts was performed in 8 patients affected by malignant (5 patients) or aggressive benign (3 patients) tumors. Resection length of the tibia ranged from 5 to 21 cm. Bone defects were reconstructed with cortical structural autografts (from contralateral tibia) or allografts or both, plus autologous bone chips. Fixation was accomplished by antegrade nailing (6 cases) or plating (2~cases). RESULTS: All the arthrodesis successfully healed. At followup ranging from 23 to 113 months (average 53.5), all patients were alive. One local recurrence was observed with concomitant deep infection (a below-knee amputation was performed). Mean functional MSTS score of the seven available patients was 80.4% (range, 53 to 93). CONCLUSION: Resection of the distal tibia and arthrodesis of the ankle with non-vascularized structural bone grafts, combined with autologous bone chips, can be an effective procedure in bone tumor surgery with durable and satisfactory functional results. In shorter resections, autologous cortical structural grafts can be used; in longer resections, allograft structural bone grafts are needed.     

同种异体骨复合人工关节置换治疗骨肿瘤

目的：探讨分析同种异体同关节复合人工假体移植治疗骨肿瘤的临床应用及疗效。方法：对应用同种异体骨关节复合人工假体移植治疗骨肿瘤12例进行临床回顾分析。其中髋关节周围7例，膝关节周围3例，肩关节周围（肱骨近端）2例，病变性质；骨巨细胞瘤6例，皮质旁骨肉瘤2例，软骨肉瘤2例，转移性腺癌2例，均行肿瘤切除及异体骨关节复合人工假体移植。结果：本组12例病人手术均顺利，肿瘤获彻底切除，平均随访时间2．5年（1－5年），伤口均一期愈合无1例感染，关节功能按Mankin标准评定，优良率为91．6％，结论：同种异体骨关节复合人工假体移植是修复骨肿瘤的有效手段。     

Do irradiated osteo-articular recycled tumor autografts still hold promise for biological joint reconstruction? Our experience with acetabular and proximal ulna ECRT

BackgroundJoint reconstruction following resection of malignant bone tumors is challenging in itself in spite of several options in hand. Ability to restore joint anatomy, function and mobility while achieving optimal oncological outcomes are the requirement of reconstructions today. While biological reconstructions (allograft or recycled tumor autografts) following tumor bone surgery are popular for intercalary resections not involving the joint, their use for osteo-articular reconstructions are associated with concerns over cartilage and joint health. We have used extracorporeal radiation therapy (ECRT) and re-implantation of the osteoarticular segment as a size matched recycled tumor autograft reconstruction after complex acetabular and proximal ulnar resections; owing to the lack of significantly superior reconstruction alternatives in these locations and also review the current literature on other biological/non-biological reconstruction options.Questions/purposes(1) What are the oncological, reconstruction and functional outcomes with osteo-articular reconstruction using ECRT and re-implantation of recycled tumor autograft for the acetabulum and olecranon? (2) Is there an evidence of cartilage loss, joint damage or avascular necrosis resulting from irradiation of the articular autograft?Methods19 patients with primary bone tumors underwent limb salvage surgery with en-bloc resection and reconstruction using the resected articular tumor bone after treating it with extra-corporeal irradiation of 50–60Gy. These included 16 acetabular and 3 proximal ulnar. While all patients were included for oncological assessment; minimum follow-up of 24 months was considered for final outcome assessment of function and joint status.ResultsMSTS scores of the 16 acetabular reconstruction patients with minimum 2 years follow-up was 87% (26/30). Neither delayed union, non-union at osteotomy sites nor was any fractures reported in the irradiated graft. There was no local recurrence within the irradiated graft and only 1 patient required graft excision for uncontrolled infection. All 3 patients of proximal ulna reconstruction achieved healing and full range of movement of the elbow. Scores of MSTS: 100% (30/30), MEPS: 100 and DASH: zero was achieved. Two patients developed osteonecrosis of the femoral head; one requiring a joint replacement and one awaiting replacement. One patient of acetabular reconstruction has joint space narrowing on radiographs with mild clinical symptoms.ConclusionsExtracorporeal radiotherapy and re-implantation after osteo-articular resection is an oncologically safe option offering promising outcome in our small series. The availability of size-matched graft, thus avoiding inherent problems of allograft also provides a better economic option over endoprosthesis and its associated complications in select sites. The results can deteriorate over time that may require secondary reconstructive procedures like joint replacement.Level of evidenceLevel IV, Therapeutic Study.     

异体骨关节移植修复肢体大段骨缺损的术后并发症

目的 分析肢体恶性肿瘤患者接受异体骨关节移植修复重建大段骨缺损的术后并发症并探讨其处理方法。方法 因肢体恶性骨肿瘤行瘤段切除,采用不同内固定方式进行异体骨－关节移植术并有完整随访资料的患者１０６例,随访时间１０～１１２个月,平均３２．３个月。术后最终结果按Ｍａｎｋｉｎ’ｓ标准评价。结果 与深低温冷冻异体骨相比,酒精浸泡异体骨移植更易发生感染、骨不连等并发症;异体骨段移植或复合人工关节移植优于半关节