Aims

Reconstruction after osteoarticular resection of the proximal ulna for tumours is technically difficult and little has been written about the options that are available. We report a series of four patients who underwent radial neck to humeral trochlea transposition arthroplasty following proximal ulnar osteoarticular resection.

Aims

The aim of this study was to report the results of three forms of reconstruction for patients with a ditsl tibial bone tumour: an intercalary resection and reconstruction, an osteoarticular reconstruction, and arthrodesis of the ankle.

Aims. We analyzed the long-term outcomes of patients observed over ten years after resection en bloc and reconstruction with extracorporeal irradiated autografts. Patients and Methods. This retrospective study included 27 patients who underwent resection en bloc and reimplantation of an extracorporeal irradiated autograft. The mean patient age and follow-up period were 31.7 years (9 to 59) and 16.6 years (10.3 to 24.3), respectively. The most common diagnosis was osteosarcoma (n = 10), followed by chondrosarcoma (n = 6). The femur (n = 13) was the most frequently involved site, followed by the tibia (n = 7). There were inlay grafts in five patients, intercalary grafts in 15 patients, and osteoarticular grafts in seven patients. Functional outcome was evaluated with the Musculoskeletal Tumor Society (MSTS) scoring system. Results. There were no recurrences in the irradiated autograft and the autograft survived in 24 patients (88.9%). Major complications included nonunion (n = 9), subchondral bone collapse (n = 4), and deep infection (n = 4). Although 34 revision procedures were performed, 25 (73.5%) and four (11.8%) of these were performed less than five years and ten years after the initial surgery, respectively. The mean MSTS score at the last follow-up was 84.3% (33% to 100%). Conclusion. Considering long-term outcomes, extracorporeal irradiated autograft is an effective method of reconstruction for malignant musculoskeletal tumours. Cite this article: Bone Joint J 2019;101-B:1151–1159

Aims

To assess complications and failure mechanisms of osteoarticular allograft reconstructions for primary bone tumours.

The October 2014 Oncology Roundup³⁶⁰ looks at: how best to reconstruct humeral tumours; not everything is better via the arthroscope; obesity and sarcoma; frozen autograft; en-bloc resection and metastatic disease; positive margins in soft-tissue injuries; lipomatous tumours explored; and what happens with recurrence of osteosarcoma.

In 1999, we developed a technique for biological reconstruction after excision of a bone tumour, which involved using autografts of the bone containing the tumour treated with liquid nitrogen. We have previously reported the use of this technique in 28 patients at a mean follow up of 27 months (10 to 54).

In this study, we included 72 patients who underwent reconstruction using this technique. A total of 33 patients died and three were lost to follow-up, at a mean of 23 months (2 to 56) post-operatively, leaving 36 patients available for a assessment at a mean of 101 months 16 to 163) post-operatively. The methods of reconstruction included an osteo-articular graft in 16, an intercalary in 13 and, a composite graft with prosthesis in seven.

Post-operative function was excellent in 26 patients (72.2%), good in seven (19.4%), and fair in three (8.3%) according to the functional evaluation system of Enneking. No recurrent tumour occurred within the grafts. The autografts survived in 29 patients (80.6%), and the rates of survival at five and ten years were 86.1% and 80.6 %, respectively. Seven of 16 osteo-articular grafts (44%) failed because of fracture or infection, but all the composite and intercalary grafts survived.

The long-term outcomes of frozen autografting, particularly using composite and intercalary grafts, are satisfactory and thus represent a good method of treatment for patients with a sarcoma of bone or soft tissue.

Cite this article: Bone Joint J 2014;96-B:555–61.

The December 2012 Research Roundup³⁶⁰ looks at: whether the rheumatoid factor is just a ‘quick test’; osteonecrosis in smokers; pasteurisation effect on bone reconstruction; venous thromboembolism risk in rheumatoids; whether stem cells reverse age-related osteopenia; the effect of running on rat knees; rapid fracture healing in rats with ultrasound; magnetic stem cells; and the safety of surgery.

Limb salvage is the gold standard to treat sarcoma patients, but bone stock should be retained for the future, as many of these patients are young and active. For this observational clinical study, 107 patients that presented with 108 malignant or locally aggressive benign bone tumours were treated by wide en-bloc resection of the affected bone, extracorporeal irradiation with 300 Gy to eradicate the tumour, and reimplantation of the bone as an orthotopic autograft. The irradiated bone was rigidly fixed to the remaining bone with classical intramedullary or extramedullary osteosynthesis material. We made a subdivision between intercalary, composite and osteoarticular grafts. The pelvis was considered a third separate entity, as it was considered both an intercalary and an osteoarticular graft when the acetabulum was involved. The incidence of local recurrence with the use of an orthotopic autograft comprised the primary endpoint of this study. Secondary endpoints: preservation of bone stock with graft healing and evaluation of factors that determine preservation. No local recurrences could be detected in the irradiated grafts. One local recurrence was detected in the surrounding soft tissue. At 5 years follow-up, graft healing occurred in 64% of cases, providing stable and lasting reconstruction. Eleven percent of the grafts had to be removed due to several incidents, but none could be proven significant. All patient subgroups displayed comparable results. Early infection appeared to be a significant determinant for the development of pseudarthrosis. Pelvic reconstructions showed a worse outcome. According to the results, guidelines for indications and surgical guidelines, such as rigid fixation and bridging of the graft, are proposed for using this technique. In general sarcoma resection, extracorporeal irradiation, and reimplantation provides a stable and lasting reconstruction with preservation of bone stock

Goals: Sarcomatous degeneration of giant cell tumours (GCT) occurs rarely. It occurs in less than 1% of the cases, and most of them are GCT previously treated with radiotherapy. The goal of this presentation is to review the CGT cases treated at our unit that have evolved towards malignization. Methods: Retrospective study of 96 GCT treated at our Hospital between 1983 and 2005. 5 presented sarcomatous degeneration in their evolution. These were the cases of 3 men and 2 women with a mean age of malignization of 42 years (32 years – 54 years). The median follow-up period was 155 months (5 months – 209 months). 3 cases affected the distal femur, one case affected distal radius and one case affected proximal humerus, with a slight tendency to the right hemibody. The primary treatment for GCT in these patients was curettage and bone graft. Only one case had received previous radiotherapy. In the same period of time we had two cases of lung dissemination of CGT with typical histology, without previous malignization of tumour. Results: Malignization takes place, on average, at the 1.8th recurrence (1.3). Histologically, we find 3 osteosarcomas and 2 indifferentiated tumours. Three patients developed distant dissemination; 2 patients died due to lung metastases, with a mean time between the first surgery and the sarcomatous degeneration of 90 months (40 monts – 183 months) and a mean time between malignization and mestastases of 22.3 months (9 months – 34 months) The treatment, once the malignization was diagnosed, consisted in wide resection and substitution with mega-arthroplasty in cases of distal femur and osteoarticular graft at the shoulder. 2 cases required amputation of the affected limb due to irresecable recurrence in soft tissues. Conclusions: There is no predictive criteria of which type of primary typical CGT will evolve into sarcoma. The malignization always has as a result high grade sarcomas, with a high tendency to hematogenous dissemination. When lung metastases appear the survival prognosis is a number of months. We must suspect malignization of a benign CGT when one of the relapses shows a very rapid growth with radiologic aggressive characteristics; in these cases we prefer wide resection of the tumour instead of curettage and thus we prevent the possible sarcomatous degeneration

The authors offer their personal experience with long term results on 71 patients (72 allografts) operated between 1961 and 1990. 23 were large osteoarticular grafts, 28 intercalary grafts and 20 fibular grafts. We used one composite hip endoprosthesis in 1988 after 16cm proximal femur resection due to Ewing sarcoma in a 10 year old girl. From the 23 osteoarticular grafts 14 (60%) are long term survivals including one after fracture salvage. Six had to be removed due to infection. From the 28 intercalary grafts 16 (57%) are surviving over 15 years. Infection occurred in 6 patients with chemotherapy. Two of them had intra-arterial CDDP and one additional radiation. All of the proximal humerus allograft had complete resorption of the proximal head within 3 years. The diaphyseal reconstructions with additional cancellous autografts incorporated within 3 years. The patient with the composite stem had two cup revisions, but the stem is doing well and we observed only a mild osteolysis at the proximal part of the graft between the 2nd and 5th year that remains stable. Fractures of the graft can be salvaged in most cases. Infection leads to the removal of the graft in almost all cases. Factors influencing the survival, remodeling and complications of the grafts are discussed. The regime of cryopreservation, fixation and loading of the graft influence these factors together with the use of autologous bone chips around the allograft-host junction as well as the application of chemotherapy or radiation. Fracture of the graft can be salvaged in most cases in contrary to infection that remains the most severe complication that can occur at any time period. Even with the improvement of tumor endoprostheses the use of allografts remains an optional solution especially in young patients

Introduction: The use of allograft prosthetic composite (APC) of the proximal tibia offers advantages over prosthetic replacement or osteoarticular graft with a better functional outcome since the possibility of a careful soft tissue reconstruction;. Materials and Methods: From 1994 to 2002, 62 APC of the proximal tibia were performed in our department after bone tumor resection (56 malignant bone tumors, 4 cases of previously failed knee implant and 2 stage 3 benign tumors). The patients median age was 18 yrs (range: 11–77 yrs) and the mean resected length was 13.2 cm (range: 8.5–28 cm). The median follow up was 59 months (range: 13–137 months). Results: In three patients (4,8%) a recurrence was reported at 22, 33 an 40 months and amputation was performed. Infection was reported in 15 patients (24.2%): 2 early infections (healed with surgical debridment), 1 femoral stem septic loosening (treated with early revision with cemented stem); in 8 cases removal of the infected APC was required followed by implant of a new prosthetic device after cement spacer; two infections did not healed and patient underwent amputation; in two cases a good functional result was achieved removing the infected graft and covering the proximal tibia with cement and no other surgery was required. Non union of the graft was observed in 8 patients (12.9%): in 4 patients autologous bone grafting was necessary to heal the osteotomy line. In other 3 cases non union was associated with graft fracture. In one case non union was associated with tibial stem loosening and revision of the whole implant was done. Polyethylene wear was assessed in 5 patients (8%) and revision of the polyethylene components was always required. Nine patellar tendon rupture (14.5%) were assessed and repaired was performed in seven cases. The functional outcome of 42 patients with more than two years of follow up was excellent in 25 cases, good in 13, fair in 2 and poor in 2. Discussion: APC of the proximal tibia is an effective alternative to osteoarticular graft and modular prosthesis because it allows good to excellent results in most of the patients (90.4%). The major concern is infection rate (24.2%) that usually lead to amputation (80%). Non union does not usually represent a problem because it’s tendency to spontaneous or bone grafting induced healing. Aseptic loosening of the tibial or femoral stem is rare. Patellar tendon rupture rate (14.5%) is similar to modular prosthetis rate and can be lowered using a femoral component with patellar groove

We examined osteochondral autografts, obtained at a mean of 19.5 months (3 to 48) following extracorporeal irradiation and re-implantation to replace bone defects after removal of tumours. The specimens were obtained from six patients (mean age 13.3 years (10 to 18)) and consisted of articular cartilage (five), subchondral bone (five), external callus (one) and tendon (one). The tumour cells in the grafts were eradicated by a single radiation dose of 60 Gy. In three cartilage specimens, viable chondrocytes were detected. The survival of chondrocytes was confirmed with S-100 protein staining. Three specimens from the subchondral region and a tendon displayed features of regeneration. Callus was seen at the junction between host and irradiated bone.

Wide resection of bone tumour has become an accepted treatment in the limb salvage surgery. The reconstruction of the residual defect following wide resection is a major problem. Author had reviewed the results of five reconstruction methods. Osteoarticular graft is suitable for proximal tibial reconstruction and endoprosthesis for distal femoral reconstruction. Autograft is rarely used to reconstruct the large residual defect. Cement can reconstruct the larger defect, but it is not a suitable procedure on long term basis. Health technology has been defined by WHO as the set of techniques, drugs, equipment and procedure used by health care professionals in delivering medical care to individuals and the system within which such care is delivered. Health technology assessment includes analyses of safety, efficacy and effectiveness, cost and cost effectiveness, infrastructure factors, social impact and fit, needs and capabilities of local health care delivery system. The reimplanatation of resected autoclaved tumour bone graft is technically a simple, financially a cost saving and a biological solution for this difficult problem. This method of reconstruction fulfills all criteria of health technology. It is the suitable method of reconstruction in limb salvage surgery for all countries, but most suitable for the developing and poor countries where the resources for other methods are not available due to financial, technical or socio-cultural reasons

Purpose: Only very partial integration of massive allografts is generally achieved, affecting bone-graft junctions and the peripheral cortical. In clinical practice, this is not a major problem for massive reconstructions with a sleeve prosthesis but can be a handicap for junctional grafts or osteoarticular grafts where weak recolonisation can be a source of complications. Material and methods: Extraperiosteal resection measuring 5 cm in length was made in the mid shaft region and bridged by a cyropreserved non-irradiated allograft before stabilisation with a static locked nail. Three groups of ten sheep were studied. The first group received a simple allograft without perforation; the allograft was perforated in the second group (1.1 mm drill bit); and the perforations in the allograft in the third group were lined with decalcified bone powder with assumed potential for inducing bone growth. The implantation was studied after a delay of six months. There were three infections so the analysis was made on 27 grafts. Plain x-rays (consolidation of the graft-bone junctions), histomorphometrics (porosity, new peripheral and endomedullary bone deposit, cortical thickness), and bone density were studied. Results: Rate of bone-graft consolidation was not significantly different in the three groups. The callus was more endosteal in groups 2 and 3 (p< 0.02) and endomedullary bone deposit was greater (p=0.0001) than in group 1 without perforation. There was approximately three times more bone deposit in the perforated allografts than in the non-perforated allografts; Adjunction of demineralised bone around the perforated grafts did not lead to any significant difference compared with the perforated allografts (group 2). Discussion: Significantly more bone deposit observed with perforated allografts should lead to better biomechanical behaviour. This is being tested in further work. Conclusion: Perforations induce a significant increase in new bone deposit in massive cortical allografts, remodelling is much more active and extensive than with non-perforated allografts. It would be logical to propose perforated allografts for junctional or osteochondral massive cortical grafts

We studied the effects of irradiation on the reintegration of autologous osteoarticular grafts over a period of 24 weeks in a canine model. In 16 foxhounds the medial femoral condyle was resected, irradiated and immediately replanted. In the control group resection and replantation were performed without irradiation. Reintegration was assessed by macroscopic analysis, histology, radiography and gait analysis. Reintegration was equal at 12 weeks, but significantly inferior in the irradiated group after 24 weeks with delayed bone remodelling. The articular cartilage showed modest degeneration. Conventional radiography and histology showed corresponding changes. Limb function was adequate but the gait was inferior in the treated group