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1.
In the early 1950s, 48 patients received bone implants from a bone bank in Tel-Hashomer Hospital that stored frozen autograft and allograft bones at temperatures less than -17 degrees C. Seventeen (35%) of these patients (20 implants), 10 men and 7 women, with a mean age of 52.4 (34-69) years were available for follow-up after a mean period of 32.5 (30-35) years. They underwent clinical examination, radiographs and bone scans to evaluate their surgical results. Fracture healing, non-union, graft resorption, osteoporosis and bone sclerosis were used as radiographic criteria for bone incorporation, and normal, increased and decreased uptake served to assess the bone scan. Based on the above criteria, the results were satisfactory in 17 (85%) and poor in 3 (15%). The three failures were after shelf operation for hip dysplasia that used two allografts and one autograft. Allogenous or a combination of allogenous with autogenous frozen bone grafts proved to be a satisfactory and durable method for filling bone defects.  相似文献   

2.
Alitalo  I.  Heikkinen  E.  Paatsama  S.  Punto  L.  Puranen  J.  Virkkunen  P. 《Acta veterinaria Scandinavica》1983,24(3):247-251
Three clinical cases of canine avascular femoral head necrosis and 4 cases of hip dysplasia were examined using intraosseus femoral neck venography. The contrast medium passed initio the diaphyseal bone marrow in all cases. Three growing dogs and 7 growing pigs were examined with the same method, before and after experimental ligation of the femoral veins. Before the venous tamponade, no contrast medium was visible in the femoral neck. The venography performed immediately after ligation showed contrast flow into the femoral neck similar to that seen in the clinical cases of Legg Perthes disease or hip dysplasia. However, a collateral circulation developed within 7 weeks. No more contrast-flow into the diaphysis was observed after that time. Although osteomedullography shows that both in Perthes disease and in hip dysplasia venous drainage has failed, venous tamponade may not induce the onset of the disease.  相似文献   

3.
Reconstructing Tumour Defects: Lyophilised, Irradiated Bone Allografts   总被引:1,自引:1,他引:0  
Tumour excision leaves behind large defects. Allografts provide an excellent alternative to autografts without donor site morbidity and are especially useful in large defects or in children where the quantity of available autograft is limited. In this paper we discuss our experience with indigenously procured and processed lyophilised, irradiated bone allografts. Bone allografts were used in 41 patients. They were used morsellised and used in 32 cases. Of these, 25 cases were available for follow-up. These included 21 patients in whom the allograft was used in contained cavities. Complete incorporation of the graft was seen between 6 and 9 months in all these 21 patients. In 4 patients the allograft was layered onto autograft. In only one of these the allograft incorporated with the host bone. Struts were used in 9 cases (3 cases complete intercalary segmental defect, 3 cases of hemicortical defects, 2 cases of allograft-prosthesis composite around the hip, in 1 case an iliac-crest block was used to stop bleeding from an anterior sacral defect). Of these, 2 full segment struts showed no incorporation. Both these patients were on chemotherapy and radiotherapy. There was no follow-up in sacral defect case. All the other struts incorporated with the host bone within 6-9 months.In 5 cases there was sterile postoperative drainage. All these cases went on to uneventful. Deep infection was observed in 4 patients (10%). In one, the graft was removed, another settled uneventfully with subsequent incorporation of graft, and two have a persisting sinus but good incorporation.To restore part of the strength of the struts it was necessary to hydrate them for 30 min prior to use. Autogenous marrow or autograft was used to provide osteoinductive properties.Conclusion. In selected cases the lyophilised, irradiated bone allografts proved to be very useful in reconstruction of large tumour defects.  相似文献   

4.
Developmental dysplasia of the hip (DDH) is a common congenital malformation characterized by mismatch in shape between the femoral head and acetabulum, and leads to hip dysplasia. To date, the pathogenesis of DDH is poorly understood and may involve multiple factors, including genetic predisposition. However, comprehensive genetic analysis has not been applied to investigate a genetic component of DDH. In the present study, 10 pairs of healthy fathers and DDH daughters were enrolled to identify genetic hallmarks of DDH using high throughput whole genome sequencing. The DDH-specific DNA mutations were found in each patient. Overall 1344 genes contained DDH-specific mutations. Functional enrichment analysis showed that these genes played important roles in the cytoskeleton, microtubule cytoskeleton, sarcoplasm and microtubule associated complex. These functions affected osteoblast and osteoclast development. Therefore, we proposed that the DDH-specific mutations might affect bone development, and caused DDH. Our pairwise high throughput sequencing results comprehensively delineated genetic hallmarks of DDH. Further research into the biological impact of these mutations may inform the development of DDH diagnostic tools and allow neonatal gene screening.  相似文献   

5.
We have examined the rates of anterior interbody fusion of lumbar spine segments following fusion with a fresh frozen femoral head allograft in 25 heavy smoking patients. They were all stabilized both anteriorly and posteriorly. The indications for surgery were: degenerative disc disease, degenerative spondylolisthesis and nonunion following previous posterolateral fusion of lumbar spine segments. Only patients who had fusion of one or two lumbar segments were included. They all were stabilized posteriorly with pedicle screws and autogenic iliac bone graft. The fusion was assessed at least one year after surgery according to plan X-rays as “Solid”, “Questionable” or “Failure”. One patient was found at follow up not fused, in another one the fusion was “questionable” and all the other 23 patients had an anterior solid fusion. Clinically, 84% of the patients had the same or improved work status as before surgery and 68% acknowledged that they were satisfied with the surgical results. No major complications were recorded and the average length of hospitalization was 10.3 days. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

6.
A Tissue Bank is a valuable adjunct to tumour management. In bone tumours, the defects produced by ablative surgery can be reconstructed using banked tissue, thereby obviating the donor site morbidity associated with autografts. Allografts are especially useful in large defects or in children where the quantity of available autograft is limited. The use of bone allografts in India has been limited by the availability of good quality, affordable grafts. In this article we share our experience with the use of indigenously produced allografts in limb salvage, as bone graft expanders and as struts. Lyophilised, irradiated bone allografts were morcellised and used in 32 patients. In 21 of these patients the allograft was used in contained cavities. Complete incorporation of the graft was seen between 6-9 months in all the 25 cases available for follow-up. In 4 patients the allograft was layered onto autograft. The allograft incorporated with the host bone in only one of these patients.Struts were used in 9 cases (3 cases complete intercalary segmental defect, 3 cases of hemicortical defects, 2 cases of allograft-prosthesis composite around the hip, 1 case an iliac-crest block was used to stop bleeding from an anterior sacral defect). Of these, no incorporation of the full segment struts was observed in 2 patients who were on chemotherapy and radiotherapy. The sacral defect case was lost to follow-up. All the other struts incorporated with the host bone within 6-9 months. In 5 cases there was sterile postoperative drainage. Overall infection was observed in 4 patients (10%). In one the graft was removed, another settled uneventfully with subsequent incorporation of graft, and two have a persisting sinus but good incorporation. Since radiation and lyophilisation are known to affect the material properties of bone, the grafts were rehydrated in saline for 30 minutes prior to transplantation. Autogenous marrow or autograft was used to provide osteoinductive properties. In selected cases the lyophilised, irradiated bone allografts proved to be clinically useful in the reconstruction of large tumour defects.  相似文献   

7.
The objective of the present study was to analyze the clinical and radiological results of periacetabular osteotomies (PAO) using Kirschner wire fixation and an allogeneic cancellous bone graft. This retrospective cohort study included 73 patients (85 PAOs). The allografts were processed from distal femur of cadaveric donors, defatted, sterilized with a peracetic-acid ethanol solution and freeze-dried. The clinical outcome, as measured by the Harris Hip Scores (HHS), the complication rate and the acetabular correction, as measured by radiological parameters, were compared. The postoperative femoral head coverage and HSS were significantly improved. Major complications occurred in five cases (6 %), but in no case did we observe a non-union or a graft-associated adverse effect. Fixation of the acetabular fragment with Kirschner wires in combination with an allogeneic cancellous bone graft is a safe method, with a low complication rate, no loss of correction and can prevent the occurrence of non-union with a high degree of probability.  相似文献   

8.
The study investigates the short-term behaviour of the acetabular construct following revision hip arthroplasty, carried out using the Slooff–Ling impaction grafting technique; using 3D finite element analyses. An elasto-plastic material model is used to describe the constitutive behaviour of morsellised cortico-cancellous bone (MCB) graft, since it has been shown that MCB undergoes significant plastic deformation under normal physiological loads. Based on previous experimental studies carried out by the authors and others, MCB is modelled using non-linear elasticity and Drucker Prager Cap (DPC) plasticity. Loading associated with walking, sitting down, and standing up is applied to the acetabular cup through a femoral head using smooth sliding surfaces. The analyses yield distinctive patterns of migration and rotation due to different activities. These are found to be similar to those observed in the clinical setting.  相似文献   

9.
The study investigates the short-term behaviour of the acetabular construct following revision hip arthroplasty, carried out using the Slooff-Ling impaction grafting technique; using 3D finite element analyses. An elasto-plastic material model is used to describe the constitutive behaviour of morsellised cortico-cancellous bone (MCB) graft, since it has been shown that MCB undergoes significant plastic deformation under normal physiological loads. Based on previous experimental studies carried out by the authors and others, MCB is modelled using non-linear elasticity and Drucker Prager Cap (DPC) plasticity. Loading associated with walking, sitting down, and standing up is applied to the acetabular cup through a femoral head using smooth sliding surfaces. The analyses yield distinctive patterns of migration and rotation due to different activities. These are found to be similar to those observed in the clinical setting.  相似文献   

10.
目的:通过对大龄发育性髋关节脱位(developmental dysplasia of the hip,DDH)患儿进行术前模拟手术,实现术中精确截骨及旋转角度,从而达到个体化治疗,改善患儿预后的目的。方法:本研究按照术前规划方式分为两组,一组为传统手术组;另一组为模拟手术组。共20例患儿均采用骨盆三联截骨术+股骨截骨术治疗,传统手术组10例,模拟手术组10例,手术时平均年龄为11.3岁,平均随访时间24.2个月。所有患儿均于术前行骨盆三维重建CT检查,测量CE角、股骨前倾角及髋臼指数,在mimics软件中,模拟手术方案,确定术中股骨截骨需要旋转的角度及骨盆截骨的位置,术中按照模拟手术的结果进行操作。术前评价指标使用Tonnis分级,术后评价指标使用改进的Trevor评分系统。结果:模拟手术组Tonnis分级3级4髋,Tonnis分级4级8髋;传统手术组Tonnis分级3级4髋,Tonnis分级4级9髋,两组患儿术前严重程度无显著性差异。依据Trevor评分,模拟手术组8髋(67%)优秀,3髋(25%)良好,1髋(8%)一般。传统手术组5髋(38%)优秀,5髋(38%)良好,3髋(23%)一般。两组有显著性差异。并发症:术后传统手术组3例患儿有不同程度的股骨头坏死。结论:大龄DDH患儿术前模拟手术,可以达到术中精确截骨及旋转角度,可改善患儿预后,实现该类患者的个体化治疗。  相似文献   

11.
Femoral head bone allografts have traditionally been used to provide mechanical stability to areas of bony deficiency, or for its osteoinductive and osteoconductive properties. Concerns have been raised over increased infection rates following the use of fresh-frozen graft tissue. This retrospective study aims to investigate the outcomes of fresh frozen femoral heads kept in a regulated, non-commercial bone bank at a university teaching hospital.The local bone bank database was used to identify released femoral heads during a 14 year study period (September 1999–December 2013) whereby a retrospective review of patient records was undertaken to determine clinical outcome. During the observed study period, 427 femoral heads were released from cold storage. Of these, 270 femoral heads had a mean follow-up of 347 days. 157 femoral heads were excluded due to insufficient follow-up data (n = 132) or discarded due to breaks in the cold chain prior to use (n = 25). Of the 270 included femoral heads, 231 (85.6 %) had no reported complications with good graft incorporation. In the remaining 39 with reported complications, only 5 (2.6 %) developed a postoperative infection. Our findings suggest that the use of fresh frozen allograft does not materially increase the risk of post-operative bacterial infection. Our reported post-operative infection rates are comparable with infection rates of other similar studies on fresh frozen allograft use.  相似文献   

12.

Introduction

Developmental dysplasia of the hip (DDH) is a common skeletal disease, which is characterized by abnormal seating of the femoral head in the acetabulum. Genetic factors play a considerable role in the etiology of DDH. Asporin (ASPN) is an ECM protein which can bind to TGF-β1 and sequentially inhibit TGF-β/Smad signaling. A functional aspartic acid (D) repeat polymorphism of ASPN was first described as an osteoarthritis-associated polymorphism. As TGF-β is well known as an important regulator in the development of skeletal components, ASPN may also be involved in the etiology of DDH. Our objective is to evaluate whether the D repeat polymorphism of ASPN is associated with DDH in Han Chinese.

Methods

The D repeat polymorphism was genotyped in 370 DDH patients and 445 control subjects, and the allelic association of the D repeat was examined.

Results

From D11 to D18, eight alleles were identified. D13 allele is the most common allele both in control and DDH groups, the frequencies are 67.3% and 58.1% respectively. In the DDH group, a significantly higher frequency of the D14 allele and significantly lower frequency of D13 was observed. The association of D14 and D13 was found in both females and males after stratification by gender. There was no significant difference in any other alleles we examined.

Conclusions

Our results show an obvious association between the D repeat polymorphism of ASPN and DDH. It indicates that ASPN is an important regulator in the etiology of DDH.  相似文献   

13.
Postburn scarring and contracture affecting function remain the most frustrating late complications of burn injury. Various techniques are used to release contractures; the choice depends on their location and/or the availability of unaffected skin adjacent to the contracture or elsewhere. A retrospective review was carried out of the case notes of patients who had skin grafting for the release of postburn contracture at the Burns Unit, City Hospital, Nottingham between May of 1984 and August of 1994 to evaluate the experience over this period. Information was obtained about the burn injury, contracture site, interval between burn and release of contracture, indication, age at first release, intervals between releases, operative details (donor and graft sites), complications and nonoperative treatment, and follow-up to the end of the study period. A total of 129 patients underwent skin grafting for release of contractures as opposed to any other method of correction. Full-thickness skin grafts were used in 81 patients (63 percent) and split-thickness skin grafts in 26 (20 percent). Twenty-two patients (17 percent) had both types used on different occasions. Flame burns (41 percent) were the most common causes, followed by scalds (38 percent). Two hundred thirty-nine sites of contracture were released, with the axilla (59) and the hand/wrist (59) being the most common sites involved, followed by the head/neck region (42). It was found that for the same site, release with split-thickness skin grafts was associated with more rereleases of the contracture than with full-thickness skin grafts. Also, the interval between the initial release and first rerelease was shorter than with full-thickness skin grafts (p < 0.048). It was also noted that children required more procedures during growth spurts, reflecting the differential effect of the growth of normal skin and contracture tissue. Patients reported more satisfaction with texture and color match with the full-thickness skin grafts. There was comparable donor-site and graft morbidity with both graft types. The use of skin grafts is simple, reliable, and safe. Whenever possible, the authors recommend the use of full-thickness skin grafts in preference to split-thickness skin grafts in postburn contracture release.  相似文献   

14.
The fibula free flap became popular in orthopedic oncology for limb-sparing long bone tumor resection. It is particularly suitable for intercalary or resection arthrodesis options. In the present series, a surgical reconstruction algorithm was used, enabling each patient to receive a personalized technique. During the years 1998 to 2002, 30 patients underwent limb-sparing surgery for long bone sarcoma. There were 18 males and 12 females. Their mean age was 23 years (range, 9 to 70 years). The diagnoses were Ewing's sarcoma (11 patients), osteogenic sarcoma (eight patients), chondrosarcoma (five patients), giant cell tumor of bone (three patients), high-grade soft-tissue sarcoma (two patients), and leiomyosarcoma of bone (one patient). The majority of tumors where located in the lower extremity (23 patients), mostly in the femur (15 patients with four tumors in the proximal femoral shaft, five tumors in the distal femoral shaft, five tumors in the whole femoral shaft, and one tumor in the proximal femoral head). In seven patients, the upper extremity was involved; in six patients, the radius was involved; and in one patient, the humerus was involved. The free fibula flap was used in three types of approaches: vascularized fibula as an osseous flap only (18 patients), a combination of a vascularized fibula flap in conjunction with an allograft (Capanna's technique; 10 patients), and a free double-barreled fibula (two patients). All flaps survived. Postoperatively, all patients were monitored clinically, radiologically, and by radioisotope bone scan studies. Callus formation and union were shown 2.6 to 8 months postoperatively. Patients who underwent lower extremity reconstruction were nonweightbearing for 3 to 9 months, with a transition period in which they used a brace and gradually increased weightbearing until full weightbearing was achieved. Eight patients had 11 recipient-site complications. Two patients (6.7 percent) had hematomas, and three patients (10 percent) had infection and dehiscence of the surgical wound with bone exposure in one patient; all complications resolved with conservative treatment only. Failure of the hardware fixation system occurred in two patients, mandating surgical correction. No fibula donor-site complications were recorded. In intercalary resections, the use of the vascularized fibula flap as an isolated osseous flap might be insufficient. Different body sites have different stress loads to carry, depending on the age of the patient and on his individual physical status. To achieve initial strength in the early period, the authors combined the free fibula flap with an allograft (Capanna's method) or augmented it as a double-barreled fibula. They propose a surgical algorithm to assist the surgeon with the preferred method for reconstruction of various long bone defects in different body locations at childhood or adulthood. Long bone reconstruction using a vascularized fibula flap, alone or in combination with an allograft, autogenous bone graft, or double-barreled fibula for limb-sparing surgery, is a safe and reliable method with a predictable bony union, good functional outcome, and a low complication rate.  相似文献   

15.
Venous allografts were evaluated in two models. Lyophilized allograft veins used as interposition grafts in the infrarenal aorta of the canine were studied and found to be patent at 1 year. Pathologic examination of the grafts revealed mild intimal hyperplasia and persistence of the basic structure of the lyophilized vessel. The ability of venous tissue to elicit an antibody response when transplanted into an allogeneic recipient was studied in the rat using the lymphocyte cytotoxicity assay. Fresh and Me2SO-cryoprotected frozen veins produced circulating antibody when used as interposition grafts in the infrarenal aorta of the rat. Lyophilized and noncryoprotected frozen veins did not induce measurable antibody. Lyophilized allograft veins are a nonimmunogenic vascular graft material with acceptable long-term patency.  相似文献   

16.
IntroductionDevelopmental dysplasia of the hip (DDH) is a common musculoskeletal disorder that has pain and loss of joint function as major pathological features. In the present study, we explored the mechanisms of possible involvement and regulation of substance P (SP) and calcitonin gene-related peptide (CGRP) in the pathological and inflammatory processes of arthritis in DDH.MethodsBlood, synovial tissue and fluid samples were collected from patients diagnosed with different severities of DDH and from patients with femoral neck fracture. Levels of SP, CGRP and inflammatory cytokines in synovium and synovial fluid (SF) in the different groups were evaluated by immunohistochemistry, real-time PCR and enzyme-linked immunosorbent assay (ELISA). Correlations between neuropeptides and inflammatory cytokines in SF were evaluated by partial correlation analysis. The proinflammatory effects of SP and CGRP on synoviocytes obtained from patients with moderate DDH were investigated in vitro by real-time PCR and ELISA. The mechanisms of those effects were evaluated by Western blot analysis and nuclear factor κ-light-chain-enhancer of activated B cells (NF-κB) DNA binding assay.ResultsSignificantly increased levels of neuropeptides and inflammatory cytokines were observed in synovium and SF from patients in the severe DDH group compared with the moderate DDH and control groups. In moderate DDH samples, SP in SF correlated with tumor necrosis factor (TNF)-α, and CGRP in SF correlated with TNF-α and interleukin (IL)-10. In the severe DDH group, SP in SF correlated with interleukin (IL)-1β, TNF-α and IL-10. CGRP in SF correlated with TNF-α. Additionally, SP might have had obvious proinflammatory effects on synoviocytes through the activation of NF-κB.ConclusionsThe upregulation of SP and CGRP in synovium and SF might participate in the inflammatory process of arthritis in DDH. The activation of the NF-κB pathway seems indispensable in the proinflammatory effect of SP on synoviocytes. This original discovery may indicate a potential clinical drug target and the development of innovative therapies for DDH.  相似文献   

17.
Abstract

The biomechanical parameters of the hip joint articular surface were analysed in 141 adult hips after Legg-Calve Perthes Disease, and 114 contralateral unaffected hips (controls), by using HIPSTRESS mathematical models. Geometrical parameters, assessed from anteroposterior and axial radiograms, were used as input to models for resultant hip force and contact hip stress. Results confirm previous indications that head enlargement after the Legg-Calve-Perthes Disease compensates the values of hip stress. Furthermore, it was found that an increased risk for coxarthritis development after the disease is secondary to concomitant hip dysplasia, with considerable and statistically significantly lower centre-edge angle and unfavourable distribution of stress.  相似文献   

18.
The use of massive bone allografts is increasing year by year and selection method remains unchanged. Superposition of patient’s radiograph over allograft image and comparison of distances is the gold standard. Experiment was led to test selection procedure of a major european tissue bank. Four observers were asked to select an allograft for 10 fictive recipients. Nine allografts were provided. To simulate a perfect allograft, recipient himself was inserted in the pool of allografts (trap graft). The 10 potential bone transplants were classified in four categories (from adequate to unacceptable). In addition, observers were asked to choose the three best grafts for a given recipient. Quadratic kappa measuring agreement on classification between two observers ranged between 0.74 (substantial) and 0.47 (moderate). Trap graft was quoted by observers as adequate four times (10%) and was cited eight times (20%) among the three best matching allografts. None of the observers discovered that recipient was among allograft panel. This study demonstrates that current selection method is inaccurate for hemipelvic allograft selection. New methods should be developed and tested to assist tissue banks in bone allograft selection.  相似文献   

19.
Developmental hip dysplasia (DDH) is a deformation of the locomotor system that can occur on previously normal bone structures in late fetal development. The study was undertaken to determine the value of continuous ultrasound screening in early diagnosis of DDH. In the area covered by the Labin Primary Health Center, clinical and ultrasound examination of the hips was performed in all children during the fourth month of life from 1989 to 2001. The incidence of DDH was 3.3%. The authors compared the obtained results with results of clinically examined hips in the period from 1968 to 1988 (incidence 1.7%), before the ultrasound diagnostics was introduced. The hip radiograms were performed only in children with clinically positive signs of higher degree of DHD. The ultrasound examination was performed with Hitachi EUB 410 real time linear transducer with a 5 MHz probe. The examiners used methods and criteria suggested by Graf. The most useful feature of the ultrasound method is that it allows the visualization of cartilaginous femoral head and its relationship to the acetabulum in infants. The method is non-invasive, repeatable, without risk of ionizing radiation or need for the contrast material administration. The results of the study revealed an important increase of DHD incidence after the introduction of ultrasound examination. US is highly sensitive in hip imaging and reveals the existence of a number of dislocated and subluxated hips that otherwise would be missed. The anomaly was discovered in the early period of life, which is very important for appropriate therapeutic effects.  相似文献   

20.
Objective Transplantation of renal grafts is an established treatment for renal failure in a variety of medical conditions. Acute allograft rejection remains an important cause of morbidity after kidney transplantation, and has been shown to be a crucial determinant of long-term graft function. Although rejection is mediated by recipient lymphocytes, both donor and recipient factors contribute to the local environment that influences the severity of rejection response. Because cytokines are the main components of immune responses, we evaluate single nucleotide polymorphisms (SNP) of several cytokine genes that may influence the production of a given cytokine and therefore the features of immune reactions. Material and Methods The aim of this study was to determine the impact of the cytokine gene polymorphism of pro and anti-inflammatory cytokines on the development of acute allograft rejection, which could be used in pretransplant patient assessment. Three SNPs including IL-10 (−1082 G/A), TNFA (−308 G/A), and INFG (+874 T/A) were analyzed in 46 patients with acute allograft rejection, 54 patients with stable graft function and their kidney donors by PCR-ARMS method. Results We are unable to find statistically significant association between any of the studies polymorphisms and clinical outcomes. Conclusion We have found no evidence to suggest that either recipient or donor cytokines polymorphisms determine the incidence of acute rejection after renal transplantation. Our observation, however, is based on few cases, and this may mask a possible favorable effect. It is recommended that several functionally related genes should be tested in similar studies, since this approach has a higher chance to detect genetic risk factors than the screening of single genetic variants.  相似文献   

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