Person: EROL, BÜLENT
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EROL
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BÜLENT
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Publication Metadata only Osteoid Osteoma of Distal Phalanx of Toe: A Rare Cause of Foot Pain(2014) EROL, BÜLENT; Başar, Hakan; Topkar, Osman Mert; Erol, BülentOsteoid osteoma is an uncommon benign tumor and causes severe pain, being worse at night, that responds dramatically to nonsteroidal anti-inflammatory medications. An osteoid osteoma of the toe is very rare and arising in a pedal phalanx may be difficult to diagnose. A 34-year-old male has local swelling and tenderness but there were no hyperemia, temperature increase, or clubbing. There was a 2-month history of antibiotic treatment with suspicion of soft tissue infection in another clinic. The osteoid osteoma was completely excised by curettage and nidus removal with open surgical technique. The patient was followed up for 63 months with annual clinical and radiographic evaluations. There was no relapse of the pain and no residual recurrent tumour. Osteoid osteoma may be difficult to distinguish from chronic infection or myxedema. The patients may be taken for unnecessary treatment. The aim of the treatment for osteoid osteoma is to remove entire nidus by open surgical excision or by percutaneous procedures such as percutaneous radiofrequency and laser ablation. Osteoid osteomas having radiologic and clinical features other than classical presentation of osteoid osteoma are called atypical osteoid osteomas. Atypical localized osteoid osteomas can be easily misdiagnosed and treatment is often complicated.Publication Open Access Management of orthopedic oncology patients during coronavirus pandemic(WILEY, 2020-09) EROL, BÜLENT; Sahbat, Yavuz; Buyuktopcu, Omer; Topkar, Osman Mert; Erol, BulentThe new measures implemented in hospitals also altered the operation of orthopedics and traumatology departments. The main purpose of this article is to discuss how orthopedic oncology clinics should be organized during the pandemic and to present the process management scheme for patients requiring orthopedic surgery, including trauma surgery, from diagnosis to treatment, together with our experiences. Instead of thinking about the global emergence of the epidemic, it is time to act decisively. At first glance, the coronavirus disease 2019 (COVID-19) pandemic and orthopedics may seem to be unrelated disciplines, but the provision of healthcare services to patients who require them proves that these two fields are parts of the same whole. Our experiences in treating neutropenic, lymphocytopenic, and chemotherapy patients seem to have proven beneficial during this process. We operated on 10 biopsy patients, 15 primary bone sarcomas, 9 soft tissue sarcomas, and 82 trauma patients within this time frame. Only three patients were suspected to have COVID-19 before admission. The early identification, strict isolation, and effective treatment of these patients prevented any nosocomial infections and disease-related comorbidities. This success is the result of the multidisciplinary cooperation of the Ministry of Health, our hospital, and our clinic.Publication Metadata only An Algorithm For Soft Tissue Reconstruction Followıng Standard Or Complex Resections Performed In Initial Or Revision Surgery Of Primary Or Recurrent Bone And Soft Tissue Sarcomas(2018-05-13) EROL, BÜLENT; DURMUŞ KOCAASLAN, FATMA NİHAL; TOPKAR, OSMAN MERT; EROL B., ÇAVUŞ ÖZKAN M., DURMUŞ KOCAASLAN F. N., TOPKAR O. M., BAYSAL Ö., BAYKAN S. E.Publication Open Access Reconstruction of Advanced Periacetabular Metastatic Lesions with Modified Harrington Procedure(2017-05-01) TOPKAR, OSMAN MERT; ŞİRİN, EVRİM; EROL, BÜLENT; AYDEMİR A. N. , TOPKAR O. M. , TOKYAY A., ŞİRİN E., EROL B.Objective: The purpose of this study was to assess the outcomes of patients who had been treated by a modified Harrington procedure for advanced periacetabular metastases. Methods: Between 2006 and 2013, 16 patients with a mean age of 57 years (range: 28–73 years) were treated using a modified Harrington technique. Extensive (class II/III) periacetabular defects were due to metastatic carcinoma or multiple myeloma. Surgical procedure included total hip replacement and acetabular reconstruction using threaded pins, cemented acetabular reinforcement ring, and/or polyethylene cup. Results: All patients improved in regard to pain and walking ability. Mean preoperative and postoperative Musculoskeletal Tumour Society (MSTS) functional scores were 52.8% (range: 33.3–73.3%) and 72% (range: 56.6–90%), respectively (p<0.05). There were 5 (31%) early or late complications requiring additional surgery. Implant survival was 75% and 37.5% at 12 and 18 months, respectively. Mean survival of the patients was 21 months (range: <1–6 years). Six remained alive, with a mean survival of 27 months (range: 18 months to 5 years). Conclusion: This modified Harrington procedure can be used for reconstruction of advanced periacetabular metastatic lesions. Keywords: Harrington procedure; periacetabular metastasis; surgical treatment. Level of Evidence: Level IV - Case series, Therapeutic study.Publication Metadata only A treatment strategy for proximal femoral benign bone lesions in children and recommended surgical procedures: retrospective analysis of 62 patients(SPRINGER, 2016) EROL, BÜLENT; Erol, Bulent; Topkar, Mert Osman; Aydemir, Ahmet Nadir; Okay, Erhan; Caliskan, Emrah; Sofulu, OmerWe aimed to develop a surgical treatment strategy for benign bone lesions of the proximal femur based upon retrospective review of our data in 62 children. Sixty-two children [38 male, 24 female; median age 9 years (range 5-18 years)] with proximal femoral benign bone lesions were surgically treated between 2005 and 2013. Histopathological diagnoses were simple (31) or aneurysmal (27) bone cysts, and nonossifying fibromas (4). The pathological fracture rate was 77.4 %. Surgical treatment was determined due to four criteria, including patient's skeletal maturity, localization and initial diagnosis of lesion, and amount of bone loss in the femoral neck and lateral proximal femur. Surgical procedure consisted of biopsy, curettage, bone grafting, and internal fixation when required. The median follow-up was 45 months (range 25-89 months). Complete clinical recovery was achieved in 56 (90.3 %) patients between 4 and 8 months postoperatively; full weight-bearing and mobilization, without pain and limping, was possible. The median preoperative and postoperative last follow-up Musculoskeletal Tumor Society (MSTS) scores were 13.3 % (range 10-23.3 %) and 96.6 % (range 90-100 %), respectively (p < 0.0001). The pathological fractures were healed in 10 weeks on average (range 8-12 weeks). Fifty-seven (92 %) patients demonstrated complete or significant partial radiographic healing between 5 and 7 months that maintained throughout follow-up. Local recurrence was not observed, and only 1 (1.6 %) patient required reoperation for partial cyst healing. There were 5 (8 %) complications, 1 (1.6 %) of which required reoperation. This treatment strategy can provide good local control and excellent functional and radiological results in the management of benign bone lesions of the proximal femur in children.Publication Metadata only Comparison of treatment of oblique and spiral metacarpal and phalangeal fractures with mini plate plus screw or screw only(SPRINGER, 2015) EROL, BÜLENT; Basar, Hakan; Basar, Betul; Basci, Onur; Topkar, Osman Mert; Erol, Bulent; Tetik, CihangirWe aimed to compare results of treatment of oblique-spiral metacarpal and phalangeal fractures with screw only or mini plate plus screw, respectively. A total of 43 patients who were operated with a diagnosis of displaced, irreducible, unstable, rotational oblique-spiral metacarpal and proximal phalangeal fracture between 2007 and 2010 were included in this study. The mean age of patients with a phalangeal fracture was 33.8 years (range 20-50 years; 4 females, 18 males), and the mean age of patients with a metacarpal fracture was 29.6 years (range 18-45 years; 3 females, 18 males). Mini plate plus screw or screw only was used for internal fixation of these fractures. The patients were followed up for 19.2 +/- A 5.4 months in the phalangeal fracture group and 20.9 +/- A 7.3 months in metacarpal fracture group. Of the metacarpal fractures, 14 were oblique and 10 spiral, whereas 14 of the phalangeal fractures were oblique and 8 spiral. The patients were evaluated according to total range of motion of the finger, grasping strength and Q-DASH score. For patients treated with mini plate plus screw after metacarpal and phalangeal fractures, the time to return to work was significantly shorter in comparison to patients treated with screws only. There was no significant difference between patients with metacarpal fractures treated with mini plate plus screw and patients treated with screw only in terms of total range of motion and Q-DASH results at last on control examination, while results of patients with phalangeal fractures treated with screw only were significantly better. There was no significant difference between these two treatments in phalangeal fractures in terms of grasping strength of the finger in early (1st month) and late (last control examination), whereas patients with metacarpal fractures treated with mini plate plus screw reached higher grasping strength earlier. Treatment with mini plate plus screw should be avoided in spiral and oblique phalangeal fractures, and fixation should be done with screw only with a short surgical incision and dissection. On the other hand, treatment with mini plate plus screw should be preferred in patients with spiral and oblique metacarpal fractures, especially in those who work in occupations requiring higher physical strength.Publication Open Access Clinical outcomes and complications of surgical interventions for multiple myeloma lesions in the extremities and pelvis: A retrospective clinical study(TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2021-04-07) EROL, BÜLENT; Topkar, Osman Mert; Erol, BulentObjective: This study aimed to assess the pain and functional status of patients who underwent various surgical interventions for the stabilization of selected multiple myeloma (MM) lesions in the extremities and pelvis and to investigate the rate of complications requiring reintervention. Methods: Patients with MM who underwent various surgical interventions for the extremity or pelvic lesions were retrospectively reviewed. Change in the pain intensity was assessed using visual analogous scale (VAS) preoperatively, at the time of discharge, and at the final follow-up. Functional status was assessed using the musculoskeletal tumor society (MSTS) scoring system for both upper and lower extremities preoperatively and at the final follow-up. Postoperative complications requiring reintervention, including dislocation, loss of fixation/aseptic loosening of prosthesis, mechanical insufficiency, periprosthetic fracture, infection, or progression of the local disease, were recorded. Results: A total of 49 (20 men and 29 women) previously (23) or newly (26) diagnosed patients with a mean age of 60.8 +/- 18.2 years were included in this study. Of these, 6 patients underwent multiple surgeries for different skeletal sites; in total, 57 procedures were performed. The mean follow-up was 47.7 +/- 21.63 months. The lesions were localized to the humerus (19), radius (1), pelvis (4), femur (30), and tibia (3). The surgical indications included therapy-refractory pain for 17 patients and pathological fractures due to progression of pre-existing lesions for 12 patients or newly diagnosed lesions with extensive bone destruction at initial presentation for 28 patients. Surgical procedures included prosthetic reconstruction in 32 patients, cement-augmented osteosynthesis in 9, and closed intramedullary nailing in 16. The mean VAS score decreased from 8.75 +/- 1.2 preoperatively to 3.21 +/- 1.56 at the time of discharge and 1.2 +/- 0.42 at the final follow-up. Although a significant decrease was detected between the preoperative and postoperative VAS scores at the time of discharge (p=0.0001), the decrease between the time of discharge and the final follow-up was statistically insignificant (p=0.086). The mean MSTS score significantly improved from 9.1%+/- 6.4% (range: 0%-40%) preoperatively to 76%+/- 14.9% (range: 40%-93.3%) at the final follow-up (p=0.0001). Significantly higher MSTS scores were obtained in the upper extremity than lower extremity/pelvis (p=0.04) and in isolated diaphyseal involvement than metaphyseal or articular involvement (p=0.032). A total of 11 complications requiring reintervention (19.2%) were observed, which included dislocation (3.5%), loss of fixation (5.2%), mechanical insufficiency (3.5%), infection (5.2%), and local tumor progression (1.7%). The rate of complications requiring reintervention was lower but statistically insignificant in the upper extremity (5%; 1/20) than lower extremity/pelvis (27%; 10/37) (p=0.076) and in isolated diaphyseal involvement (6.2%; 1/16) than metaphyseal or articular involvement (24.3%; 10/41) (p=0.079). Conclusion: Although different types of surgeries can achieve pain relief and good function in different anatomical localizations, better functional results with lower complication rates may be obtained following surgical management of MM lesions in the upper extremities and in diaphyseal localizations.Publication Open Access Limb salvage surgery of primary and metastatic bone tumors of the lower extremity: Functional outcomes and survivorship of modular endoprosthetic reconstruction(TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2021-04-07) EROL, BÜLENT; Topkar, Osman Mert; Sofulu, Omer; Sirin, Evrim; Erol, BulentObjective: The study was aimed to determine the survivorship and functional outcomes of modular endoprosthetic reconstruction in the management of primary and metastatic bone tumors of the lower limbs and to investigate the rate and causes of implant failure. Methods: A total of 84 limbs of 82 patients (49 male, 33 female; mean age=48 years, age range=13-78 years) with a minimum follow-up of 12 months in whom resection and modular endoprosthetic reconstructions were performed for primary or metastatic bone tumors of the lower extremity were retrospectively reviewed and included in the study. The mean follow-up was 43 (range=13-119) months. Functional status was assessed using the Musculoskeletal Tumor Society (MSTS) scoring system at the final follow-up. Implant survival was defined as the time from implantation until partial or complete exchange of the prosthesis secondary to mechanical or nonmechanical causes or amputation. The effects of the anatomical site on functional scores and implant survival were statistically analyzed. Additionally, the effects of diagnosis and adjuvant treatments on functional scores, implant survival, and failure rates were investigated. Results: At the time of the study, 55 patients were still alive with a mean follow-up of 48 (range=15-119) months. The mean MSTS scores resulting from the final follow-up of all patients and of those surviving were 87.9% (range=16%-100%) and 86.8% (range=16%-100%), respectively. Overall implant survival was 95.2%, 89.2%, 87%, and 87% at 1, 2, 3, and 4 years, respectively. Statistically, both functional scores and implant survival analysis in different anatomical sites were found similar. In 15 of the patients (17.8%), endoprosthetic reconstructions had failed. The causes of failure were soft tissue failure (dislocation) in 5 patients, infection in 5, structural/mechanical failure in 2, local recurrence in two, and aseptic loosening in one. The diagnosis and receiving preoperative and/or postoperative adjuvant treatment did not affect functional scores, implant survival or failure rates. Conclusion: The results of this study have shown that modular endoprosthetic replacement can provide satisfactory functional results and a durable mid-term limb salvage option in the management of patients with primary and metastatic bone tumors of the lower limbs.Publication Open Access LUMIC endoprosthetic reconstruction after periacetabular tumor resection: mid-term results(2019-09-14) EROL, BÜLENT; ŞİRİN, EVRİM; TOPKAR, OSMAN MERT; EROL B., ŞİRİN E., TOPKAR O. M. , SAĞLAM F., BAYKAN S. E. , İĞREK S.Publication Metadata only Biomechanical determination of the relationship between femoral neck lesion size and the risk of pathological fracture(SAGE PUBLICATIONS LTD, 2016) EROL, BÜLENT; Caypinar, Baris; Erol, Bulent; Topkar, Mert; Basci, OnurPurpose: Half of the pathological fractures of the proximal femur occur in the neck region. We evaluate the relationship between the defect size within the femoral neck and the risk of pathological fracture. Methods: After creating metastasis-like lesions in the neck regions of 21 human cadaver femurs, compression was applied to simulate single-limp stance type loading. First, a loading of 600 Newtons (N) was applied to the 35%-defected femoral necks. If the bone fracture did not occur, the defect size was increased to 45% and the 600 N force was applied again. If no fracture was observed then the defect size was increased to 55% and the bones were loaded again. The 55%-defected bones with no fractures were loaded until a fracture was detected. Results: There were no fractures with the 35%- and 45%-defected femurs until 600 N was applied. However, when the defect size was increased to 55%, 3 bones were fractured before reaching 600 N. The fractures occurred at an average of 455 N in the 3 bones. At a compression of 600 N, 18 bones (84%) were intact, and the loading was continued. 18 femurs with 55%-defected neck regions had an average endurance of 1270 N compression (range 750-2800 N). Conclusions: This study showed that even very osteoporotic bones with large metastases can withstand high forces of compressive loading.