Person: TOPKAR, OSMAN MERT
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TOPKAR
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OSMAN MERT
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Publication Metadata only Pediatrik radius diafiz kırıklarının intramedüller tel ile fiksasyonunda, dorsal veya lateral giriş yeri fonksiyonel sonuçları ve komplikasyon oranını değiştirir mi(2019-11-22) AKGÜLLE, AHMET HAMDİ; TOPKAR, OSMAN MERT; ŞİRİN, EVRİM; AKGÜLLE A. H., ONAY T., İĞREK S., KESİMER M. D., TOPKAR O. M., ŞİRİN E.Amaç: Çocuk radius diafiz kırıkları cerrahi tedavisinde intrameduller tel ile fiksasyon en sık kullanılan yöntemdir. Tel girişi dorsal ve lateralden yapılabilmektedir. Çalışmanın amacı, pediatrik radius diafiz kırıklarında dorsal giriş ya da lateral girişli intrameduller fiksasyon yapılmış olguları fonksiyonel sonuç ve komplikasyon oranları açısından karşılaştırmaktı. Yöntem: 2014-2018 yılları arasında tek bir merkezde pediatrik radius diafiz kırığı nedeniyle cerrahi uygulanmış olan hastalar retrospektif olarak incelendi. İntramedüller yöntemle tedavi edilmemiş, dosya ve takipleri yetersiz ve patolojik kırığı olan hastalar çalışmadan çıkarıldı. Dorsal giriş yapılan 19 (Grup A), lateral giriş yapılan (Grup B) 18, toplam 37 hasta çalışmaya alındı. Hastaların; yaş, kırıktan ameliyata kadar geçen süre, kaynama (pin çıkarma) süreleri, açık veya kapalı cerrahi uygulanması, perop ve geç postop komplikasyonları ile fonksiyonel skorları kaydedildi. Radius alt uçta kırık gelişmesi major komplikasyon, el bilekte hafif ağrı ve hareket kısıtlılığı minör komplikasyon olarak kabul edildi. Fonksiyonel değerlendirmede Childrens Hospital of Philadelphia Önkol Kırık Fonksiyon Sınıflaması kullanıldı. Veriler istatistiksel olarak analiz edildi. Bulgular: Hastaların ortalama yaşı 10,5 yıl ve ortalama takip süresi 37 ay olarak bulundu. Tüm kırıklar ortalama 47 günde kaynadı. Grup A’da 2, Grup B’de 1 hastada giriş sırasında radius alt uçta kırık oluştu. Grup A’da 1 hastada, Grup B’de 3 hastada minör komplikasyon tespit edildi. 30 hastada (%81,1) mükemmel, 4 hastada (%10,8) orta ve 3 hastada (%8,1) kötü sonuç elde edildi. İki grup arasında, komplikasyon gelişimi ve fonksiyonel skor açısından istatistiksel anlamlı fark saptanmadı (p>0.05). Çıkarımlar: Pediatrik radius diafiz kırıklarının intramedüller fiksasyonunda, tel giriş yeri ile komplikasyonlar ve fonksiyonel sonuç arasında bir ilişki bulunamamıştır. Her iki giriş noktasında benzer sonuçlar elde edilebilmektedir. Geniş serilerle prospektif olarak yapılacak çalışmalar daha yol gösterici olacaktır.Publication Metadata only Dorsal or Lateral Approach for Intramedullary Nailing Using Kirschner Wire in Pediatric Radius Diaphyseal Fractures: Does it really matter?(SPRINGER HEIDELBERG, 2021) AKGÜLLE, AHMET HAMDİ; Akgulle, Ahmet Hamdi; Onay, Tolga; Igrek, Servet; Kesimer, Mehmet Deniz; Topkar, Osman Mert; Sirin, EvrimBackground Intramedullary nailing is the most preferred fixation method for diaphyseal radius and ulna fractures in the young age group. The aim of this study was to compare the dorsal and lateral entry points in the context of entry site-related complications, fracture union and functional results. Methods This retrospective comparative study included pediatric patients who underwent surgery for isolated diaphyseal radius or both bone forearm fractures with intramedullary nailing using Kirschner wire between January 2013 and January 2019. K-wire was introduced from the distal radius through dorsal entry (Group A) in 19 patients and lateral entry (Group B) in 18 patients. The mean follow-up was 37 months. Complications were noted and functional outcomes were evaluated according to the CHOP criteria. Results All fractures were healed. The functional results were determined to be excellent for 30, fair for 4, and poor for 3 patients. The overall complication rate was 18.9%, including distal radius fracture, mild pain in the wrist, and minor loss in ROM. No statistically significant differences were determined between the groups in respect of functional results and complication rates. Conclusion Good functional results and similar complication rates can be obtained with both dorsal and lateral entry approaches. Stainless steel K-wire is an inexpensive intramedullary fixation implant option, which provides strong stabilization. Distal radius fracture is a newly reported complication for forearm intramedullary nailing. Leaving the implant out of the skin seems safe with the benefit of avoiding a further surgical intervention to extract the implant.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 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 Open Access Mid-term results of intralesional extended curettage, cauterization, and polymethylmethacrylate cementation in the treatment of giant cell tumor of bone: A retrospective case series(TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2020-10-30) AKGÜLLE, AHMET HAMDİ; Sirin, Evrim; Akgulle, Ahmet Hamdi; Topkar, Osman Mert; Sofulu, Omer; Baykan, Said Erkam; Erol, BulentObjective: The aim of this study was to present the mid-term functional outcomes and recurrence rate in patients with giant cell tumor of bone (GCTB) treated by intralesional extended curettage, electrocauterization, and polymethylmethacrylate (PMMA) cementation. Methods: In this retrospective observational study, 79 consecutive patients (41 females, 38 males; mean age=39 years; age range=19-62 years) who were diagnosed and treated for GCTB between 2005 and 2017 were identified from hospital medical records. All patients were treated by intralesional extended curettage using high-speed burr, electrocauterization of the cavity, and filling the defect with PMMA. No additional local adjuvants were used. The mean follow-up period was 47 months (range=24-96). The tumors were graded according to the radiological classification system described by Campanacci. Functional outcomes were evaluated using the Musculoskeletal Tumor Society Score (MSTS) preoperatively, one year postoperatively, and at the final follow-up. Postoperative complications and recurrence rates were recorded. Results: Twenty-nine tumors were located in the distal femur, 23 in the proximal tibia, nine in the distal radius, five in the proximal humerus, five in the pelvis, three in the proximal fibula, two in the distal ulna, two in the distal tibia, and one in the second metatarsal. According to Campanacci classification, 37 tumors were grade III, 32 grade II, and 10 grade I. The mean MSTS score was 46.1% (range 40.2 to 71.4%) preoperatively, 91.7% (range 73.3% to 100%) one year postoperatively, and 86.3 % (range 66.2% to 96,1%) at the final follow-up. The overall complication rate was 7.6%; which included local tumor recurrence in four patients, superficial wound infection in one, and deep wound infection in another. The recurrence rate was 5.1% (4 patients). Recurrent tumors were located at the distal femur in three patients and proximal tibia in one. Conclusion: With satisfactory functional results and low recurrence rates at the mid-term follow-up, GCTB can be treated effectively with intralesional extended curettage, electrocauterization, and PMMA cementation.Publication Metadata only Mid-term results of osteoarticular reconstructions of pediatric periarticular bone sarcomas with free fibula head flap(2018-05-11) EROL, BÜLENT; ŞİRİN, EVRİM; TOPKAR, OSMAN MERT; EROL B., ŞİRİN E., TOPKAR O. M., BAYKAN S. E., ÖZTÜRK Ö., TETİK C.