Person: UZER, GÖKÇER
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Publication Metadata only Biomechanical Comparison of 2 Different Femoral Stems in the Shortening Osteotomy of the High-Riding Hip(2016-06-01) Tuncay, Ibrahim; Yildiz, FATİH; Bilsel, Kerem; Uzer, GÖKÇER; Elmadag, Mehmet; Erden, TUNAY; Bozdag, Ergun; TUNCAY, İBRAHİM; YILDIZ, FATİH; BİLSEL, İSMAIL KEREM; UZER, GÖKÇER; ELMADAĞ, NUH MEHMET; ERDEN, TUNAYBackground: We hypothesized that a rectangular cross-sectional femoral stem may produce more initial stability of the transverse subtrochanteric femoral shortening osteotomy rather than a circular cross-sectional stem.Publication Metadata only Reliability of magnetic resonance imaging versus arthroscopy for the diagnosis and classification of superior glenoid labrum anterior to posterior lesions(2017-02-01) Yildiz, FATİH; Bilsel, Kerem; PULATKAN, Anil; Uzer, GÖKÇER; Aralasmak, AYŞE; ATAY, Musa; YILDIZ, FATİH; BİLSEL, İSMAIL KEREM; UZER, GÖKÇER; ARALAŞMAK, AYŞEThe physical examination of the shoulder is usually not reliable for the true diagnosis of superior glenoid labrum anterior to posterior (SLAP) lesions. Magnetic resonance imaging (MRI) has been routinely used for the diagnosis. This prospective study investigates the radiological diagnosis of the SLAP lesions and compares accuracy of arthroscopic and MRI classifications.Publication Open Access Comparison of two types of proximal femoral hails in the treatment of intertrochanteric femur fractures(2015-09-01) Uzer, GÖKÇER; Elmadag, NUH MEHMET; Yildiz, FATİH; Bilsel, Kerem; Erden, TUNAY; Toprak, HÜSEYİN; UZER, GÖKÇER; ELMADAĞ, NUH MEHMET; YILDIZ, FATİH; BİLSEL, İSMAIL KEREM; ERDEN, TUNAY; TOPRAK, HÜSEYİNBackground: Hip nailing is frequently used to treat unstable intertrochanteric femoral fractures (ITF) in elderly patients. In this retrospective study, we compared the functional and radiological results, and the complications, of patients treated using proximal femoral nails (PFN) with an integrated, interlocking, compression lag screw, or two separate lag screws, which allow linear compression at the fracture site. Methods: A total of one hundred and eighteen patients were operated on for AO/OTA 31-A2 ITF between May 2010 and April 2012, and eighty-two of these patients, for whom sufficient follow-up data and documentation were available, were included into the study. PFNs with interlocking, integrated lag screws (Group I) were used in forty-four patients, and PFNs with two separate lag screws (Group II) in thirty-eight. Outcome parameters were the extent of varus collapse and leg length discrepancy on radiographs, and the Western Ontario and McMaster Universities Arthritis Index (WOMAC) and Harris hip scores (HHS) as functional results. Results: Mean follow-up duration was 20 months (range, 12-36 months); fractures healed in all patients. Mean varus collapse values were 2.03±5.68° and 5.21±5.27° (p=0.01), Harris hip scores 73.2±11.65 and 74.72±11.15 (p=0.54), and WOMAC scores 70.78±11.41 and 71.78±11.19 (p=0.69) in Groups I and II, respectively. No difference was detected between the groups in terms of outcome parameters or complication rate. Conclusion: In the treatment of ITF, PFNs with an integrated, interlocking, compression lag screw, or two separate lag screws did not differ in terms of functional and radiological results or complication rate.Publication Metadata only Does grafting of the tuberosities improve the functional outcomes of proximal humeral fractures treated with reverse shoulder arthroplasty?(2017-01-01T00:00:00Z) Uzer, GÖKÇER; Yildiz, FATİH; BATAR, Suat; BINLAKSAR, Ruwais; Elmadag, Mehmet; Kus, Gamze; Bilsel, Kerem; UZER, GÖKÇER; YILDIZ, FATİH; ELMADAĞ, NUH MEHMET; BİLSEL, İSMAIL KEREMBackground: Functional outcomes of reverse total shoulder arthroplasty (rTSA) can be improved by fixation of the tuberosities. This study compares clinical and radiologic results of patients with comminuted proximal humeral fractures treated with rTSA, with and without autologous grafting.Publication Metadata only Biomechanical comparison of three different plate configurations for comminuted clavicle midshaft fracture fixation(2017-12-01T00:00:00Z) Uzer, GÖKÇER; Yildiz, FATİH; BATAR, Suat; Bozdag, Ergun; Kuduz, Hacer; Bilsel, Kerem; UZER, GÖKÇER; YILDIZ, FATİH; BİLSEL, İSMAIL KEREMBackground: The aim of this study was to compare the fixation rigidity of anterior, anterosuperior, and superior plates in the treatment of comminuted midshaft clavicle fractures.Publication Metadata only Efficacy of bone marrow-stimulating technique in rotator cuff repair(2017-08-01) Bilsel, Kerem; Yildiz, FATİH; Kapicioglu, MEHMET; Uzer, GÖKÇER; Elmadag, Mehmet; PULATKAN, Anil; Esrefoglu, MUKADDES; Bozdag, Ergun; MILANO, Giuseppe; BİLSEL, İSMAIL KEREM; YILDIZ, FATİH; KAPICIOĞLU, MEHMET; UZER, GÖKÇER; ELMADAĞ, NUH MEHMET; EŞREFOĞLU, MUKADDESBackground: This study used a chronic rotator cuff (RC) tear model to investigate the effect of microfracture as a bone marrow-stimulating (BMS) technique for RC healing.Publication Open Access Cytotoxicity of a new antimicrobial coating for surgical screws: an in vivo study(2017-01-01) Guzel, Yunus; Elmadag, Mehmet; Uzer, GÖKÇER; Yildiz, FATİH; Bilsel, Kerem; Tuncay, Ibrahim; ELMADAĞ, NUH MEHMET; UZER, GÖKÇER; YILDIZ, FATİH; BİLSEL, İSMAIL KEREM; TUNCAY, İBRAHİMhe risk of surgery-related infection is a persistent problem in orthopaedics and infections involving implants are particularly difficult to treat. This study explored the responses of bone and soft tissue to antimicrobialcoated screws. We investigated whether such screws, which have never been used to fix bony tissues, would result in a cytotoxic effect. We hypothesised that the coated screws would not be toxic to the bone and that the likelihood of infection would be reduced since bacteria are not able to grow on these screws. METHODS Titanium screws were inserted into the left supracondylar femoral regions of 16 rabbits. The screws were either uncoated (control group, n = 8) or coated with a polyvinylpyrrolidone-polyurethane interpolymer with tertiary amine functional groups (experimental group, n = 8). At Week 6, histological samples were obtained and examined. The presence of necrosis, fibrosis and inflammation in the bony tissue and the tissue surrounding the screws was recorded. RESULTS Live, cellular bone marrow was present in all the rabbits from the experimental group, but was replaced with connective tissue in four rabbits from the control group. Eight rabbits from the control group and two rabbits from the experimental group had necrosis in fatty bone marrow. Inflammation was observed in one rabbit from the experimental group and five rabbits from the control group. CONCLUSION Titanium surgical screws coated with polyvinylpyrrolidone-polyurethane interpolymer were associated with less necrosis than standard uncoated screws. The coated screws were also not associated with any cytotoxic side effect.Publication Open Access Comparison Between Y- and S-Shaped Incisions for Open Reduction and Hook-Plate Fixation of the Mallet Finger(2017-04-01) Uzer, GÖKÇER; Yildiz, FATİH; Kapicioglu, MEHMET; Elmadag, Mehmet; Kara, DENİZ; Bilsel, Kerem; UZER, GÖKÇER; YILDIZ, FATİH; KAPICIOĞLU, MEHMET; KARA, DENİZ; BİLSEL, İSMAIL KEREMObjective: This study evaluates the results of open reduction and hook-plate fixation in the treatment of osseous mallet finger and compares S-and Y-shaped incisions used for the approach. Methods: Twenty-eight patients treated for osseous mallet finger using open reduction and hook-plate fixation were divided into two groups according to their incisions types (group I: S-shaped, n= 18; and group II: Y-shaped, n= 10). Functional results at the first year of follow-up and complications were evaluated. Results: All fractures healed. In group I, all patients had excellent results; in group II, nine patients had excellent results, and one patient had fair results. The numbers of complications were two in group I and six in group II. Conclusion: Hook-plate fixation is a successful treatment method for osseous mallet finger. The rate of complications can be decreased using an "S-shaped" incision with this technique. However, patients should be informed about possible skin problems and nail deformities.