Person: UZER, GÖKÇER
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Publication Open Access Treatment of unusual proximal humeral fractures using unilateral external fixator: a case series(2015-05-01) UZER, GÖKÇER; YILDIZ, FATİH; Elmadağ, Mehmet; Bilsel, Kerem; PULATKAN, Anil; UZER, GÖKÇER; YILDIZ, FATİH; BİLSEL, İSMAIL KEREMObjective To report the functional and radiological results of unusual comminuted fractures of the proximal humerus, treated with ‘closed reduction and external fixation’ (CREF) using hybrid-type unilateral external fixators (EFs). Patients and methods Between January 2012 and June 2013, eight patients (mean age 62.6; range 48–84 years) with comminuted proximal humeral fractures extending to the humeral head and one-third proximal diaphysis were treated with CREF using hybrid-type EFs. Functional results were evaluated in terms of shoulder ranges of movement, Constant, DASH, and VAS scores, and radiological results were evaluated using antero-posterior and lateral radiograms of the treated humerus. Results The mean follow-up was 16.6 (range 12–28) months. The mean fixator time was 84 (range 63–118) days. The mean range of forward flexion, internal rotation, external rotation, and abduction were 145°, 61.2°, 65°, and 115°, respectively. The mean Constant, DASH, and VAS scores were 79.8, 10, and 1.75, respectively. Seven of the eight patients (87.5 %) healed radiologically. Two complications were observed in two patients: non-union and superficial pin site infection. Conclusions In the treatment of unusual, comminuted proximal diaphyseal humeral fractures, CREF using a hybrid-type EF is a minimally invasive, advantageous procedure with acceptable rates of healing, low risk of surgical site infection, and early range of motion. Level of evidence Level IV, case series.Publication Open Access Superior Mesenteric Artery Syndrome due to a Vertebral Hemangioma and Postpartum Osteoporosis following Treatment.(2015-01-01) Elmadag, M; GÜZEL, Y; UZER, GÖKÇER; TUNCAY, İBRAHİM; ELMADAĞ, NUH MEHMET; UZER, GÖKÇER; TUNCAY, İBRAHİMIn pregnancy, advanced vertebral hemangiomas may be seen, and these require treatment. The case reported here is of a 35-yearold female in the 32nd week of pregnancy who was admitted to the orthopaedics clinic with a history of backache and difficulty walking. A burst fracture of L1 associated with a vertebral hemangioma was identified with an L3 compression fracture secondary to osteoporosis. The local kyphosis angle between T12 and L2 was 27∘ . Kyphotic deformity was corrected and postoperatively, the measured T12–L2 local kyphotic angle was 9∘ . Twelve hours postoperatively, oral nutrition was allowed, but she developed nausea and vomiting and twenty-four hours postoperatively, an electrolyte imbalance developed. Postoperatively, the patient was diagnosed with superior mesenteric artery syndrome. To the best of our knowledge, this is the first reported case of superior mesenteric artery syndrome, which occurred following the correction of a kyphotic deformity that had developed secondary to an advanced hemangioma in pregnancyPublication Metadata only Intra-articular hyaluronate, tenoxicam and vitamin E in a rat model of osteoarthritis: evaluation and comparison of chondroprotective efficacy(2015-01-01T00:00:00Z) ÖZKAN, FEYZA ÜNLÜ; UZER, GÖKÇER; TÜRKMEN, İSMAİL; YILDIZ, YAVUZ; ŞENOL, SERKAN; ÖZKAN, KORHAN; TÜRKMENSOY, FATİH; RAMADAN, SAİME; AKTAŞ, İLKNUR; UZER, GÖKÇERObjective: The aim of this experimental study was to evaluate and compare the chondroprotective efficacy of intra-articular hyaluronic acid, tenoxicam and vitamin E in osteoarthritis. Methods: An osteoarthritis model was created by anterior cruciate ligament transection and medial menisectomy in knees of 28 rats. The rats were randomized into four groups; first group served as a control group and received intra-articular injections of saline solution, intra-articular HA, intra-articular tenoxicam and intra-articular Vit E were applied to the treatment groups. First intra-articular injections were applied at second week postoperatively and repeated once a week for 5 weeks. At 8th week after the operation groups were compared based on the histologic scores of cartilage degeneration by Mankin Histological Grading Scale. Results: Total cartilage degeneration score was significantly increased in the control group (P=0.004). Total Mankin scores of HA, tenoxicam and Vit E groups were significantly lower than the control group (P=0.004, P=0.016, P=0.012 respectively). There was no statistically siginificant difference between the treatment groups in terms of total Mankin scores (P>0.05). Conclusion: Intra-articular application of HA, tenoxicam and Vit E are chondroprotective in early osteoarthritis model in rats. Chondroprotective activity of tenoxicam and Vit E are comparable with the beneficial effects of HA on articular cartilage.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 Comparison of four different techniques for performing an osteotomy A BIOMECHANICAL, RADIOLOGICAL AND HISTOLOGICAL STUDY ON RABBITS TIBIAS(2015-12-01) Elmadag, M.; Uzer, GÖKÇER; Yildiz, FATİH; ERDEN, TUNAY; Bilsel, K.; Buyukpinarbasili, NUR; USUMEZ, A.; BOZDAG, E.; SEN, C.; ELMADAĞ, NUH MEHMET; UZER, GÖKÇER; YILDIZ, FATİH; ERDEN, TUNAY; BİLSEL, İSMAIL KEREM; BÜYÜKPINARBAŞILI, NURThis animal study compares different methods of performing an osteotomy, including using an Erbium-doped Yttrium Aluminum Garnet laser, histologically, radiologically and biomechanically. A total of 24 New Zealand rabbits were divided into four groups (Group I: multihole-drilling; Group II: Gigli saw; Group III: electrical saw blade and Group IV: laser). A proximal transverse diaphyseal osteotomy was performed on the right tibias of the rabbits after the application of a circular external fixator. The rabbits were killed six weeks after the procedure, the operated tibias were resected and radiographs taken.Publication Metadata only Clinical comparison of hook plate fixation versus extension block pinning for bony mallet finger: a retrospective comparison study(2015-10-01T00:00:00Z) Acar, M. A.; Guzel, Y.; Gulec, A.; UZER, GÖKÇER; Elmadag, M.; UZER, GÖKÇER; ELMADAĞ, NUH MEHMETThe aim of this retrospective study was to determine whether traumatic mallet fractures had better outcomes when treated by hook plate fixation (13 patients) or extension block pinning (19 patients). We assessed outcomes using Crawford-s criteria; distal interphalangeal joint range of motion; the DASH score; and a visual analogue scale score for pain. We measured radiological parameters. No significant differences were observed in functional and clinical outcomes and in complications. Whereas the operative time was longer in the hook plate group, intraoperative fluoroscopy use, time to bone union and time to return to work were greater in the extension block group. Although the hook plate method is more technically demanding, it provides good stable reduction, earlier mobilization and an earlier return to work. The extension block pinning technique is easier and as effective but it requires greater peri-operative fluoroscopy.Publication Metadata only OXFORD FAZ3 UNİKONDİLER DİZ ARTROPLASTİSİNDE ORTA DÖNEM SONUÇLARIMIZ(2015-11-01) TUNCAY, İBRAHİM; YILDIZ, FATİH; UZER, GÖKÇER; ELMADAĞ, NUH MEHMET; ERDEM, AHMET CAN; BİLSEL, İSMAİL KEREM; TUNCAY, İBRAHİM; YILDIZ, FATİH; UZER, GÖKÇER; ELMADAĞ, NUH MEHMET; ERDEM, AHMET CAN; BİLSEL, İSMAIL KEREMPublication Metadata only An innovative universal screw removal instrument.(2015-03-01T00:00:00Z) Elmadağ, M; GÜZEL, Y; UZER, GÖKÇER; ACAR, MA; ELMADAĞ, NUH MEHMET; UZER, GÖKÇERPublication Metadata only PERİPROSTETİK KEMİK KIRIKLARINDA VE KAYIPLARINDA FİBULA STRUT OTOGREFT KULLANIMI(2015-11-01) TUNCAY, İBRAHİM; YILDIZ, FATİH; UZER, GÖKÇER; ELMADAĞ, NUH MEHMET; TUNCAY, İBRAHİM; YILDIZ, FATİH; UZER, GÖKÇER; ELMADAĞ, NUH MEHMETPublication Metadata only ASYA TOPLUMUNDA KISA DÜZ ÇİVİLERİN(PFNA-2 VE İNTERTAN) FEMORAL ANTERİOR EĞİM İLE UYUŞMAZLIĞI(2015-11-01) ELMADAĞ, NUH MEHMET; GÜZEL, YUNUS; UZER, GÖKÇER; YILDIZ, FATİH; ERDEN, TUNAY; TUNCAY, İBRAHİM; ELMADAĞ, NUH MEHMET; UZER, GÖKÇER; YILDIZ, FATİH; TUNCAY, İBRAHİM