En bloc resection of pelvic sarcomas with sacral invasion

2018 ◽  
Vol 100-B (6) ◽  
pp. 798-805 ◽  
Author(s):  
Y. Zhang ◽  
W. Guo ◽  
X. Tang ◽  
R. Yang ◽  
T. Ji ◽  
...  
Keyword(s):  
Operating Time ◽  
Surgical Approaches ◽  
New Classification ◽  
En Bloc ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Ps Ii ◽  
Pelvic Tumour ◽  
Ps I ◽  
The Mean

AimsThe sacrum is frequently invaded by a pelvic tumour. The aim of this study was to review our experience of treating this group of patients and to identify the feasibility of a new surgical classification in the management of these tumours.Patients and MethodsWe reviewed 141 patients who, between 2005 and 2014, had undergone surgical excision of a pelvic tumour with invasion of the sacrum. In a new classification, pelvisacral (Ps) I, II, and III resections refer to a sagittal osteotomy through the ipsilateral wing of the sacrum, through the sacral midline, or lateral to the contralateral sacral foramina, respectively. A Ps a resection describes a pelvic osteotomy through the ilium and a Ps b resection describes a concurrent resection of the acetabulum with osteotomies performed through the pubis and ischium or the pubic symphysis. Within each type, surgical approaches were standardized to guide resection of the tumour.ResultsThe mean operating time was 5.2 hours (sd 1.7) and the mean intraoperative blood loss was 1895 ml (sd 1070). Adequate margins were achieved in 112 (79.4%) of 141 patients. Nonetheless, 30 patients (21.3%) had local recurrence. The mean Musculoskeletal Tumor Society (MSTS93) lower-limb function score was 68% (sd 19; 17 to 100). According to the proposed classification, 92 patients (65%) underwent a Ps I resection, 33 patients (23%) a Ps II resection, and 16 (11%) patients a Ps III resection. Overall, 82 (58%) patients underwent a Ps a resection and 59 (42%) patient a Ps b resections. The new classification predicted surgical outcome.ConclusionWe propose a comprehensive classification of surgical approaches for tumours of the pelvis with sacral invasion. Analysis showed that this classification helped in the surgical management of such patients and had predictive value for surgical outcomes. Cite this article: Bone Joint J 2018;100-B:798–805.

Long-term outcomes of an extracorporeal irradiated autograft for limb salvage operations in musculoskeletal tumours

2019 ◽  
Vol 101-B (9) ◽  
pp. 1151-1159 ◽  
Author(s):  
N. Oike ◽  
H. Kawashima ◽  
A. Ogose ◽  
H. Hatano ◽  
T. Ariizumi ◽  
...  
Keyword(s):  
Deep Infection ◽  
Long Term Outcomes ◽  
En Bloc ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Initial Surgery ◽  
Common Diagnosis ◽  
The Mean

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

Comparison of free vascularized fibular flaps and allograft fibular strut grafts to supplement spinopelvic reconstruction for sacral malignancies

2021 ◽  
Vol 103-B (8) ◽  
pp. 1414-1420
Author(s):  
Elizabeth P. Wellings ◽  
Matthew T. Houdek ◽  
Aaron R. Owen ◽  
Karim Bakri ◽  
Michael J. Yaszemski ◽  
...  
Keyword(s):  
Malignant Tumour ◽  
Malignant Tumours ◽  
En Bloc ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Total N ◽  
Hardware Failure ◽  
Spinopelvic Fixation ◽  
History Of ◽  
The Mean

Aims Orthopaedic and reconstructive surgeons are faced with large defects after the resection of malignant tumours of the sacrum. Spinopelvic reconstruction is advocated for resections above the level of the S1 neural foramina or involving the sacroiliac joint. Fixation may be augmented with either free vascularized fibular flaps (FVFs) or allograft fibular struts (AFSs) in a cathedral style. However, there are no studies comparing these reconstructive techniques. Methods We reviewed 44 patients (23 female, 21 male) with a mean age of 40 years (SD 17), who underwent en bloc sacrectomy for a malignant tumour of the sacrum with a reconstruction using a total (n = 20), subtotal (n = 2), or hemicathedral (n = 25) technique. The reconstructions were supplemented with a FVF in 25 patients (57%) and an AFS in 19 patients (43%). The mean length of the strut graft was 13 cm (SD 4). The mean follow-up was seven years (SD 5). Results There was no difference in the mean age, sex, length of graft, size of the tumour, or the proportion of patients with a history of treatment with radiotherapy in the two groups. Reconstruction using an AFS was associated with nonunion (odds ratio 7.464 (95% confidence interval (CI) 1.77 to 31.36); p = 0.007) and a significantly longer mean time to union (12 months (SD 3) vs eight (SD 3); p = 0.001) compared with a reconstruction using a FVF. Revision for a pseudoarthrosis was more likely to occur in the AFS group compared with the FVF group (hazard ratio 3.84 (95% CI 0.74 to 19.80); p = 0.109); however, this was not significant. Following the procedure, 32 patients (78%) were mobile with a mean Musculoskeletal Tumor Society Score 93 of 52% (SD 24%). There was a significantly higher mean score in patients reconstructed with a FVF compared with an AFS (62% vs 42%; p = 0.003). Conclusion Supplementation of spinopelvic reconstruction with a FVF was associated with a shorter time to union and a trend towards a reduced risk of hardware failure secondary to nonunion compared with reconstruction using an AFS. Spinopelvic fixation supplemented with a FVF is our preferred technique for reconstruction following resection of a sacral tumour. Cite this article: Bone Joint J 2021;103-B(8):1414–1420.

scholarly journals One-Stage Soft Tissue Reconstruction Following Sarcoma Excision: A Personalized Multidisciplinary Approach Called “Orthoplasty”

2020 ◽  
Vol 10 (4) ◽  
pp. 278
Author(s):  
Andrea Angelini ◽  
Cesare Tiengo ◽  
Regina Sonda ◽  
Antonio Berizzi ◽  
Franco Bassetto ◽  
...  
Keyword(s):  
Surgical Resection ◽  
Lower Limbs ◽  
Surgical Approaches ◽  
Soft Tissue Reconstruction ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
One Stage ◽  
Unplanned Excision ◽  
Increased Risk ◽  
Toronto Extremity Salvage Score

Background and Objectives. Wide surgical resection is a relevant factor for local control in sarcomas. Plastic surgery is mandatory in demanding reconstructions. We analyzed patients treated by a multidisciplinary team to evaluate indications and surgical approaches, complications and therapeutic/functional outcomes. Methods. We analyzed 161 patients (86 males (53%), mean age 56 years) from 2006 to 2017. Patients were treated for their primary tumor (120, 75.5%) or after unplanned excision/recurrence (41, 25.5%). Sites included lower limbs (36.6%), upper limbs (19.2%), head/neck (21.1%), trunk (14.9%) and pelvis (8.1%). Orthoplasty has been considered for flaps (54), skin grafts (42), wide excisions (40) and other procedures (25). Results. At a mean follow-up of 5.3 years (range 2–10.5), patients continuously showed no evidence of disease (NED) in 130 cases (80.7%), were alive with disease (AWD) in 10 cases (6.2%) and were dead with disease (DWD) in 21 cases (13.0%). Overall, 62 patients (38.5%) developed a complication (56 minor (90.3%) and 6 major (9.7%)). Flap loss occurred in 5/48 patients (10.4%). The mean Musculoskeletal Tumor Society (MSTS) and Toronto Extremity Salvage Score (TESS) was 74.8 ± 14 and 79.1 ± 13, respectively. Conclusions. Orthoplasty is a combined approach effective in management of sarcoma patients, maximizing adequate surgical resection, limb salvaging and functional recovery. One-stage reconstructions are technically feasible and are not associated with increased risk of complications.

scholarly journals Outcome of modular megaprosthesis in management of Campanacci stage III giant cell tumor around the knee: a prospective study

2021 ◽  
Vol 8 (9) ◽  
pp. 2618
Author(s):  
Ritwika Nandi ◽  
Pinaki Das ◽  
Sujit Narayan Nandi
Keyword(s):  
Functional Outcome ◽  
Giant Cell ◽  
Giant Cell Tumors ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Tumor Excision ◽  
Bone Segment ◽  
The Mean ◽  
A Prospective Study ◽  
Large Bone

Background: Juxta articular giant cell tumors around the knee constitute 50-60% of the total cases reported. If the disease is detected at an advanced stage, reconstruction of the joint after tumor excision poses problems and has poor functional outcome. The aim of the study was to determine the functional outcome after resection of juxta-articular giant cell tumors around the knee and its reconstruction with mega prosthetic arthroplasty will be analyzed.Methods: Between January 2017 and March 2021, 14 patients in the age group of 28-48 years (mean=42.85 years) with Campanacci stage three giant cell tumors around the knee were studied (12-distal femur patients, 2-proximal tibia). Patients underwent tumor excision and reconstruction with modular megaprosthesis. They were evaluated post-operatively using the Revised Musculoskeletal Tumor Society Score (MSTS) for lower limb.  Results: All the patients were followed up for 12-44 months (mean=29.5 months), the average knee flexion at 6 months being 116.4 degrees. The mean MSTS at 6, 12, 18 and 24 months are 19.45, 23.23, 26.61 and 28.77 respectively. Complications observed were infection and tumor recurrence.  Conclusions: In advanced cases where tumor excision leaves large bone segment loss, reconstruction with megaprosthesis can give desirable functional outcome.

scholarly journals Osteoid osteoma: Contemporary management

2018 ◽  
Vol 10 (3) ◽  
Author(s):  
Shahryar Noordin ◽  
Salim Allana ◽  
Kiran Hilal ◽  
Naila Nadeem ◽  
Riaz Lakdawala ◽  
...  
Keyword(s):  
Osteoid Osteoma ◽  
Bone Tumors ◽  
Staging System ◽  
Benign Tumors ◽  
Appendicular Skeleton ◽  
Common Symptom ◽  
En Bloc ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Ct Guided

Osteoid osteoma is a benign bone-forming tumor with hallmark of tumor cells directly forming mature bone. Osteoid osteoma accounts for around 5% of all bone tumors and 11% of benign bone tumors with a male predilection. It occurs predominantly in long bones of the appendicular skeleton. According to Musculoskeletal Tumor Society staging system for benign tumors, osteoid osteoma is a stage-2 lesion. It is classified based on location as cortical, cancellous, or subperiosteal. Nocturnal pain is the most common symptom that usually responds to salicyclates and non-steroidal anti-inflammatory medications. CT is the modality of choice not only for diagnosis but also for specifying location of the lesion, i.e. cortical vs sub periosteal or medullary. Non-operative treatment can be considered as an option since the natural history of osteoid osteoma is that of spontaneous healing. Surgical treatment is an option for patients with severe pain and those not responding to NSAIDs. Available surgical procedures include radiofrequency (RF) ablation, CT-guided percutaneous excision and en bloc resection.

The management of infected nonunion of tibia with a segmental defect using simultaneous fixation with a monorail fixator and a locked plate

2018 ◽  
Vol 100-B (8) ◽  
pp. 1094-1099 ◽  
Author(s):  
S. Gupta ◽  
A. Malhotra ◽  
N. Mittal ◽  
S. K. Garg ◽  
R. Jindal ◽  
...  
Keyword(s):  
Functional Results ◽  
Cement Spacer ◽  
Segmental Defect ◽  
Locked Plate ◽  
Infected Nonunion ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Emotional Acceptance ◽  
Patient Reported ◽  
The Mean

Aims The aims of this study were to establish whether composite fixation (rail-plate) decreases fixator time and related problems in the management of patients with infected nonunion of tibia with a segmental defect, without compromising the anatomical and functional outcomes achieved using the classical Ilizarov technique. We also wished to study the acceptability of this technique using patient-based objective criteria. Patients and Methods Between January 2012 and January 2015, 14 consecutive patients were treated for an infected nonunion of the tibia with a gap and were included in the study. During stage one, a radical debridement of bone and soft tissue was undertaken with the introduction of an antibiotic-loaded cement spacer. At the second stage, the tibia was stabilized using a long lateral locked plate and a six-pin monorail fixator on its anteromedial surface. A corticotomy was performed at the appropriate level. During the third stage, i.e. at the end of the distraction phase, the transported fragment was aligned and fixed to the plate with two to four screws. An iliac crest autograft was added to the docking site and the fixator was removed. Functional outcome was assessed using the Association for the Study and Application of Methods of Ilizarov (ASAMI) criteria. Patient-reported outcomes were assessed using the Musculoskeletal Tumor Society (MSTS) score. Results The mean age of patients was 38.1 years (sd 12.7). There were 13 men and one woman. The mean size of the defect was 6.4 cm (sd 1.3). the mean follow-up was 33.2 months (24 to 50). The mean external fixator index was 21.2 days/cm (sd 1.5). The complication rate was 0.5 (7/14) per patient. According to the classification of Paley, there were five problems and two obstacles but no true complications. The ASAMI bone score was excellent in all patients. The functional ASAMI scores were excellent in eight and good in six patients. The mean MSTS composite score was 83.9% (sd 7.1), with an MSTS emotional acceptance score of 4.9 (sd 0.5; maximum possible 5). Conclusion Composite fixation (rail-plate) decreases fixator time and the associated complications, in the treatment of patients of infected nonunion tibia with a segmental defect. It also provides good anatomical and functional results with high emotional acceptance. Cite this article: Bone Joint J 2018;100-B:1094–9.

scholarly journals Pedicle frozen autograft-prosthesis composite reconstructions for malignant bone tumors of the proximal femur

2020 ◽  
Author(s):  
gang xu ◽  
Shinji Miwa ◽  
Norio Yamamoto ◽  
Katsuhiro Hayashi ◽  
Akihiko Takeuchi ◽  
...  
Keyword(s):  
Proximal Femur ◽  
Functional Outcomes ◽  
Bone Tumors ◽  
Functional Score ◽  
Malignant Bone Tumors ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Biological Reconstruction ◽  
The Mean

Abstract Background Limb salvage surgery is becoming increasingly popular after tumor resection in the lower extremity. Biological reconstruction and use of megaprosthesis are main methods for malignant bone tumors of the proximal femur, which remain controversial due to short- and long-term complication in the proximal femur. Tumor-bearing bone treated by liquid nitrogen is one of biological reconstruction. This study aimed to evaluate the mid- and long-term functional outcomes and complications in patients treated with frozen autograft–prosthesis composite (FAPC) reconstructions in the proximal femur. Methods This retrospective study included 19 patients (10 women, 9 men) with malignant tumors of the proximal femur who underwent tumor-wide resection and FAPC reconstruction (mean age, 46 years; range, 9-77 years). The mean follow-up period of 69 months (range, 9-179 month). Functional outcomes, oncological outcomes and complications were evaluated by Musculoskeletal Tumor Society score, clinical and radiological examinations. Results The overall survival rate was 68.4%, and the mean Musculoskeletal Tumor Society functional score was 26.4 points (88%). FAPC survival rates were 100% and 50% at 5 and 10 years, respectively. Five of the 19 patients (26%) had complications: 2 required prosthesis removal and 2 developed a deep infection around acetabular. Wear of the acetabulum occurred in 2 cases, while disease recurrence was occurred in 1 case. There were no cases of greater trochanter avulsion, obvious absorption around frozen bone, prosthesis loosening or leg length discrepancy. Conclusions Due to without femoral osteotomy, this technique features satisfactory functional outcome and provide biomechanical stability that is comparable to those of other methods of biological reconstruction or megaprosthesis.

Outcome of modular megaprosthesis in management of Campanacci Stage III Giant cell tumor around the knee - A Prospective Study

2021 ◽  
Author(s):  
Ritwika Nandi ◽  
Pinaki Das ◽  
Sujit Narayan Nandi
Keyword(s):  
Functional Outcome ◽  
Giant Cell ◽  
Giant Cell Tumors ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Tumor Excision ◽  
Bone Segment ◽  
The Mean ◽  
A Prospective Study ◽  
Large Bone

Abstract Purpose : Juxta articular giant cell tumors around the knee constitute 50-60% of the total cases reported. If the disease is detected at an advanced stage, where it has already spread to extraosseous compartment or joint with pathological fractures, reconstruction of the joint after tumor excision poses problems and has poor functional outcome. In this article the functional outcome after resection of juxta-articular giant cell tumors around the knee and its reconstruction with mega prosthetic arthroplasty will be analyzed. Materials and methods: Between January 2017 and March 2021, 14 patients in the age group of 28- 48 years ( mean 42.85 years) with Campanacci Stage three giant cell tumors around the knee were studied . Distal femur was involved in 12 patients and proximal tibia in 2 patients. Patients underwent tumor excision and reconstruction with modular megaprosthesis. They were evaluated post-operatively using the Revised Musculoskeletal Tumor Society Score (MSTS) for lower limb. Results: All the patients were followed up for 12-44 months (mean 29.5 months), the average knee flexion at 6 months being 116.4 degrees. The Mean MSTS at 6 , 12 , 18 and 24 months are 19.45, 23.23, 26.61 and 28.77 respectively. Complications observed were infection and tumor recurrence. Conclusion: In advanced cases where tumor excision leaves large bone segment loss, reconstruction with megaprosthesis can give desirable functional outcome.

The Stoichiometries of Supramolecular Complexes in Thylakoid Membranes From Spinach Chloroplasts

1987 ◽  
Vol 14 (1) ◽  
pp. 21 ◽  
Author(s):  
WS Chow ◽  
AB Hope
Keyword(s):  
Photosystem Ii ◽  
Atpase Activity ◽  
Thylakoid Membranes ◽  
Coupling Factor ◽  
Supramolecular Complexes ◽  
Cyt B ◽  
Ps Ii ◽  
Ps I ◽  
The Mean ◽  
Isolated Chloroplasts

The concentrations of photosystem II (PS II), photosystem I (PS I) and cytochrome b/f complexes on a chlorophyll basis have been determined for chloroplasts of spinach grown under three irradiances in a glasshouse. Assaying PS II by atrazine binding gave concentrations that exceeded the estimates from flash-induced O2 or H+ yield by a factor of 1.21 � 0.04 (23). Since part of this factor (1.14) is expected to arise from missed turnovers in excited reaction centres, it is concluded that both methods are valid to determine [PS II] in gently isolated chloroplasts. The agreement between the methods also suggests that atrazine does not bind to additional sites of quenchers such as 'Q400', contrary to the suggestion of R. J. Dennenberg and P. A. Jursinic [Biochim. Biophys. Acta 808 (1985), 192-200]. Whilst [PS I] was independent of growth irradiances, [PS II] and [cyt f ] increased with irradiance, as did the latent ATPase activity, a measure of the concentration of coupling factor 1. If [PS I] is taken as constant at 1.65 mmol (mol Chl)-1, the mean stoichiometries of PS II : cyt b/f complex : PS I obtained at the minimum and maximum irradiances were 1.2 : 0.7 : 1 and 1.6 : 1.0 : 1 respectively, PS II being determined by atrazine binding.

scholarly journals Pedicle frozen autograft-prosthesis composite reconstructions for malignant bone tumors of the proximal femur

2020 ◽  
Author(s):  
gang xu ◽  
Shinji Miwa ◽  
Norio Yamamoto ◽  
Katsuhiro Hayashi ◽  
Akihiko Takeuchi ◽  
...  
Keyword(s):  
Proximal Femur ◽  
Functional Outcomes ◽  
Bone Tumors ◽  
Functional Score ◽  
Malignant Bone Tumors ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Biological Reconstruction ◽  
The Mean

Abstract Background Limb salvage surgery is becoming increasingly popular after tumor resection in the lower extremity. Biological reconstruction and use of megaprosthesis are main methods for malignant bone tumors of the proximal femur, which remain controversial due to short- and long-term complication in the proximal femur. Tumor-bearing bone treated by liquid nitrogen is one of biological reconstruction. This study aimed to evaluate the mid- and long-term functional outcomes and complications in patients treated with frozen autograft–prosthesis composite (FAPC) reconstructions in the proximal femur. Methods This retrospective study included 19 patients (10 women, 9 men) with malignant tumors of the proximal femur who underwent tumor-wide resection and FAPC reconstruction (mean age, 46 years; range, 9-77 years). The mean follow-up period of 69 months (range, 9-179 month). Functional outcomes, oncological outcomes and complications were evaluated by Musculoskeletal Tumor Society score, clinical and radiological examinations. Results The overall survival rate was 68.4%, and the mean Musculoskeletal Tumor Society functional score was 26.4 points (88%). FAPC survival rates were 100% and 50% at 5 and 10 years, respectively. Five of the 19 patients (26%) had complications: 2 required prosthesis removal and 2 developed a deep infection around acetabular. Wear of the acetabulum occurred in 2 cases, while disease recurrence was occurred in 1 case. There were no cases of greater trochanter avulsion, obvious absorption around frozen bone, prosthesis loosening or leg length discrepancy. Conclusions Due to without femoral osteotomy, this technique features satisfactory functional outcome and provide biomechanical stability that is comparable to those of other methods of biological reconstruction or megaprosthesis.

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