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Featured researches published by Oguz Poyanli.


Strategies in Trauma and Limb Reconstruction | 2008

Profunda femoris artery pseudoaneurysm after surgery and trauma

Koray Unay; Oguz Poyanli; Kaya Akan; Arzu Poyanli

Pseudoaneurysms of the profunda femoris artery have been reported following different types of trauma and from orthopedic procedures performed in the proximal femur. Two cases of profunda femoris artery pseudoaneurysm with two rare causes are presented. The first one is a core decompression of femoral head for osteonecrosis and the second one is a proximal femur fracture nailing. Awareness and careful follow-up are the key issues for the early diagnosis.


Journal of Trauma-injury Infection and Critical Care | 2010

No evidence of infection after retrograde nailing of supracondylar femur fracture in gunshot wounds.

Oguz Poyanli; Koray Unay; Kaya Akan; Melih Güven; Korhan Ozkan

BACKGROUND The aim of the study was to determine whether osteomyelitis of the femur or septic arthritis of the knee develops after retrograde intramedullary nailing of the femur performed within 7 days of supracondylar femur fracture, secondary to gunshot wounds, without skin defects. METHODS Fifteen patients with a mean age of 27.8 years (range, 18-52 years), with supracondylar fractures of the femur due to gunshot wounds and without skin defects. Retrograde intramedullary nails were inserted through the intercondylar notch of the femur. We evaluated whether osteomyelitis of the femur or ipsilateral septic arthritis of the knee joint developed postoperatively. RESULTS None of the patients who were followed up for a mean period of 11.7 months (range, 9-16 months) showed evidence of ipsilateral septic arthritis of the knee or osteomyelitis of the femur. CONCLUSION Retrograde intramedullary nailing of the femur can be performed in patients with supracondylar fractures of the femur due to gunshot wounds, and without skin defects, in the first 7 days after the trauma. Neither osteomyelitis of the femur nor septic arthritis of the knee develops in these patients.


Journal of Foot & Ankle Surgery | 2012

Minimally invasive reduction technique in split depression type tibial pilon fractures.

Oguz Poyanli; Irfan Esenkaya; Afsar Timucin Ozkut; Mehmet Akif Akcal; Kaya Akan; Koray Unay

Tibial pilon fractures usually result from high energy trauma and present as a challenge to the orthopedic surgeon. Accurate reduction of the joint with meticulous care for the surrounding soft tissues is mandatory. We present a case report in which an anterior cruciate ligament targeting device is used with a minimally invasive technique under arthroscopic and fluoroscopic guidance for Orthopaedic Trauma Association 43-B2.3 type pilon fracture treatment.


Skeletal Radiology | 2001

Primary hydatid disease of the femur: unsuspected and incidental MRI findings with long-term curative results on medical treatment alone

Arzu Poyanli; Kaya Akan; Oguz Poyanli; Serra Sencer; Hakan Sayrak

This report describes the early magnetic resonance imaging (MRI) findings and long-term follow-up results of albendazole treatment in a 16-year-old girl with primary hydatid disease of the femur diagnosed incidentally during the course of a post-traumatic knee infection. As far as we know, this is the first report of the early MRI findings and long-term outcome of medical treatment in primary hydatid disease of the femur in this age group


Spine | 2001

Pneumococcal vertebral osteomyelitis : A unique case with atypical clinical course

Arzu Poyanli; Oguz Poyanli; Kaya Akan; Serra Sencer

Study Design. A case report. Objectives. To report and discuss a case of pneumococcal vertebral osteomyelitis with meningitis in a previously healthy 51-year-old immunocompetent woman who presented with acute onset lower back pain. Summary of Background Data. To the authors’ knowledge, pneumococcal vertebral osteomyelitis with meningitis in an immunocompetent person with no other predisposing factor has not been reported previously. Methods. The patient was diagnosed to have pneumococcal meningitis 10 days after the onset of acute and severe lower back pain. Significant improvement of clinical symptoms from meningitis was achieved with appropriate antimicrobial treatment. Lumbar CT and MRI scans were performed on persistence of fever and lower back pain. Loss of height and peridiscal inflammation at L3–L4 and epidural and bilateral psoas abscesses were detected. Results. Diagnosis of pneumococcal vertebral osteomyelitis was established after evaluation of the material obtained from CT-guided aspiration of the psoas abscess and biopsy of the L3 body. With appropriate antimicrobial treatment, the patient’s complaints resolved completely. Conclusion. To the authors’ knowledge, this is the first reported case of pneumococcal vertebral osteomyelitis with meningitis.


European Journal of Orthopaedic Surgery and Traumatology | 2014

The relationship between intra-articular meniscal, chondral, and ACL lesions: finding from 1,774 knee arthroscopy patients and evaluation by gender

Koray Unay; Mehmet Akif Akcal; Bahadir Gokcen; Kaya Akan; Irfan Esenkaya; Oguz Poyanli

Knowing the relationship between diagnoses is important in knee arthroscopy in terms of defining possible treatment modalities preoperatively. The purpose of our study was to define the diagnoses made intraoperatively through knee arthroscopy and the relationships between them. We evaluated the results of knee arthroscopies performed over a 10-year period. The sites and sizes of chondral lesions, the existence of anterior cruciate ligament (ACL) injury, and the sites of meniscal lesions were noted for a total of 1,774 patients. The relationships between these lesions were evaluated statistically. Chondral lesions and posterior medial meniscal tears were predominant in females, whereas complete ACL tears were predominant in males. ACL tears were commonly accompanied by medial and lateral meniscal bucket-handle tears. In cases with advanced chondral lesions, medial and lateral posterior meniscal and lateral anterior meniscal tears were more common. According to our results, posterior tears of the medial menisci, medial and lateral femoral condyles, lateral tibial plateau type 3 or 4 cartilage lesions, and the rate of diagnostic arthroscopy were higher in females, while middle substance and bucket-handle tears of medial menisci and total rupture of the ACL were more common in males. ACL injuries were seen to coexist with medial or lateral menisci bucket-handle tears, with no relationship between the site or size of the chondral lesions. A relationship between medial and lateral meniscal tears and the site of femoral and tibial chondral surface lesions was detected.


International Orthopaedics | 2011

Component alignment in simultaneous bilateral or unilateral total knee arthroplasty

Volkan Kilincoglu; Koray Unay; Kaya Akan; Irfan Esenkaya; Oguz Poyanli

A bilateral total knee prosthesis procedure can be performed simultaneously in patients with bilateral gonarthrosis. The purpose of this study was to evaluate the differences in component alignment between the simultaneous bilateral TKA and unilateral TKA. A total of 20 patients out of 40 underwent simultaneous bilateral TKA, whereas 20 patients had unilateral TKA. The component alignments were compared radiographically. There was no statistically significant difference in the component alignment between the simultaneous bilateral TKA group and the unilateral TKA group. In conclusion, component alignment of the patients with simultaneous bilateral TKA is similar to that of unilateral TKA.


Journal of Evaluation in Clinical Practice | 2009

Evaluating the effectiveness of a deep-vein thrombosis prophylaxis protocol in orthopaedics and traumatology

Koray Unay; Kaya Akan; Nadir Sener; Mustafa Cakir; Oguz Poyanli

RATIONALE, AIMS AND OBJECTIVES To evaluate the effectiveness of the deep-vein thrombosis (DVT) prophylaxis protocol for adult patients in a general orthopaedics and traumatology clinic. METHOD We followed the DVT prophylaxis protocol in 1326 (776 female, 550 male) of 2114 adult patients admitted to the Department of Orthopaedics and Traumatology in Goztepe Research and Training Hospital. They were followed for symptomatic DVT and possible complications of low-molecular-weight heparin (LMWH) therapy. A Doppler ultrasonography (US) was performed when DVT was suspected. The medical information treatment protocols of DVT patients were recorded. RESULTS Doppler US was performed in 58 patients with suspected DVT. Six of these patients were diagnosed with DVT. The side effects of LMWH were upper gastrointestinal bleeding (0.5%), widespread ecchymosis of the extremities (1.9%) and heparin-induced thrombocytopenia (0.16%). CONCLUSION Symptomatic DVT occurrences were similar to those in medical literature; however, there were fewer side effects of LMWH than reported in literature.


Journal of Orthopaedic Surgery and Research | 2014

Effect of N-butyl cyanoacrylate on fracture healing in segmental rat tibia fracture model.

Mehmet Akif Akcal; Oguz Poyanli; Koray Unay; Irfan Esenkaya; Bahadir Gokcen; Ayşe Sanem Fıratlıgil

BackgroundComminuted fractures can occur due to severe traumas. The treatment of these fractures that may cause serious morbidity and sometimes mortality is N-butyl cyanoacrylate. It has been reported that this adhesive provides sufficient rigid fixation for bone healing. This study aims to examine cyanoacrylate radiologically and histologically to determine whether it provides adequate recovery in segmental fractures. The secondary objective is to evaluate N-butyl cyanoacrylate, an adhesive material that can hold the fragments on the fracture line together following reduction.MethodsSixteen Sprague–Dawley rats were divided in two groups as control (n = 8) and experimental (n = 8) groups. In the control group, segmental fractures were made and fixated with K-wire. In the experimental group, the same surgical procedure was applied and also fragments were stabilized with N-butyl cyanoacrylate.ResultsOn the sixth week, we did not see any statistically significant difference in the radiological scoring between groups. However, the pathological scores of the control group were statistically higher than the cyanoacrylate group.ConclusionsWe found that cyanoacrylate was rapidly and easily applied in the segmental fractures but did not cause any superior radiological and clinical results compared to the control group. The cyanoacrylate had low viscosity, and it was not capable enough to fill the defects formed between osteotomy surfaces. However, it did not adversely affect fracture healing as seen in biopsies taken as a result of follow-ups.


Injury-international Journal of The Care of The Injured | 2015

Precise placement of lag screws in operative treatment of trochanteric femoral fractures with a new guide system

Oguz Poyanli; Salih Soylemez; Afsar Timucin Ozkut; Esat Uygur; Bahattin Kemah; Omer Kays Unal

PURPOSE We assessed the accuracy of a new guide system that we developed to place lag screws in the proper position with the minimum number of attempts for operative treatment of trochanteric femoral fractures. METHODS A total of 55 consecutive trochanteric femoral fractures were treated with a cephalomedullary nail. The first 27 consecutive patients were treated with the standard operation (group A), while the new guide system was used in the last 28 consecutive patients (group B). The numbers of attempts to place K wires and the duration of surgery were noted. Accuracy of lag screw placement was evaluated by measuring the angle of deviation from the central axis of the femoral head. RESULTS Deviation values ranged from -11̊ to +15̊ for the 27 cases in group A, with a median absolute deviation of 8̊±6̊. That in the 28 cases after the introduction of the new guide system (group B) ranged from -5̊ to +6̊, with a median absolute deviation of 0.5̊±3̊ (P<0.001). The total numbers of attempts to place lag screws and mean operation time decreased significantly after introduction of the new guide system (P<0.001). CONCLUSIONS With this new guide system, we are able to insert lag screws successfully in the optimal position even in most unstable fractures. The present study indicated that this new guide system and nail facilitate accurate placement of lag screws in the appropriate position with the minimum number of attempts.

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Koray Unay

Istanbul Medeniyet University

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Melih Güven

Abant Izzet Baysal University

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Afsar Timucin Ozkut

Istanbul Medeniyet University

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Bahattin Kemah

Istanbul Medeniyet University

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Esat Uygur

Istanbul Medeniyet University

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