Browsing by Author "Karademir, Gokhan"

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Analysing the change of sagittal balance in patients with Lenke 5 idiopathic scoliosis
(TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2017-01-01) Ozkunt, Okan; Karademir, Gokhan; Sariyilmaz, Kerim; Gemalmaz, Halil Can; Dikici, Fatih; Domanic, Unsal
Objective: The aim of this study was to evaluate preoperative and postoperative spinopelvic parameters and the influence of lowest instrumented vertebrae on sagittal parameters in Lenke 5 Adolescent Idiopathic Scoliosis (AIS) patients. Methods: A total of 42 patients (37 females, 5 males
Does pedicle screw density matter in Lenke type 5 adolescent idiopathic scoliosis?
(LIPPINCOTT WILLIAMS \& WILKINS, 2018-01-01) Sariyilmaz, Kerim; Ozkunt, Okan; Karademir, Gokhan; Gemalmaz, Halil Can; Dikici, Fatih; Domanic, Unsal
The aim of this study is to compare the effects of high versus low implant density on correction in Lenke type 5 adolescent idiopathic scoliosis (AIS) patients. A retrospective study of 59 Lenke type 5 AIS patients treated at a single institution were divided into to 2 groups according to implant density. Implant density, preoperative, early postoperative, and last follow-up thoracolumbar/lumbar (TL/L) curves were measured. Thirty-one constructs were high and 28 constructs were low density. The groups were similar in terms of age, sex, Cobb angle, and follow-up time. Mean implant density in low density group and high density group was 75.4\% and 96.6\%, respectively. High versus low-density comparison showed that there is no significant difference with regard to curve correction in early postoperative and last follow-up periods. The results show that pedicle screw density being low or high, does not affect curve correction rates in the short and long term in our patients.
EVALUATING THE ROLE OF SCAPULA MORPHOLOGY IN ROTATOR CUFF TEARS: WHICH IS THE MOST USEFUL PREDICTOR?
(ISTANBUL UNIV, FAC MEDICINE, PUBL OFF, 2021-01-01) Karademir, Gokhan; Tunali, Onur; Atalar, Ata
Objective: The aim of this study was to determine the relation-ships between glenoid inclination (GI), acromial index (AI), criti-cal shoulder angle (CSA), superior inclination (SI), and symptom-atic degenerative full-thickness supraspinatus tears (SSTs).Materials and Methods: Patients who were diagnosed with SSTs (n=39) between 2015 and 2017 were assessed retrospec-tively. Controls were matched to age, gender, and side. Mea-sured GI, AI, CSA, and SI values were compared between the SSTs and control groups (n=39). The mean age for the SSTs group was 52.74 +/- 5.49 years, and the mean age for the control group was 51.15 +/- 5.22 years.Results: The mean GI for the SSTs group was 19.97 degrees +/- 5.62 degrees, and it was 13.72 degrees +/- 6.55 degrees for the control group (p<0.001). The mean AI was 0.7 +/- 0.08 and 0.67 +/- 0.07 in the SSTs and control groups, respectively (p=0.035). The mean CSA for the SSTs group was 35.05 degrees +/- 4.09 degrees and it was 33.06 degrees +/- 3.42 degrees for the control group (p=0.022). The mean SI was 25.13 degrees +/- 5.71 degrees and 25.91 degrees +/- 5.81 degrees in the SSTs and control groups, respectively (p=0.552). For a cut-off value of GI 217.35 degrees, sensitivity was 79.54\%, and specificity was 79.51\% (p=0.001). For a cut-off value of AI 20.67, sensitivity was 61.54\% and specificity was 56.4\% (p=0.031). For a cut-off value of CSA 233.45 degrees, sensitivity was 64.12\%, and specificity was 64.54\% (p=0.014).Conclusion: Higher measurement values of glenoid inclination, acromial index, and critical shoulder angle were associated with symptomatic degenerative full-thickness supraspinatus tears, and no correlation was found with superior inclination measure-ment. The glenoid inclination measurement had the highest sensitivity and specificity in predicting symptomatic degenera-tive full-thickness supraspinatus tears.
Posterior Approach Alone Versus Combined Anterior and Posterior Approach in the Management of Vertebral Tuberculosis
(TURKISH NEUROSURGICAL SOC, 2019-01-01) Demirel, Mehmet; Akgul, Turgut; Pehlivanoglu, Tuna; Karademir, Gokhan; Bayram, Serkan; Dikici, Fatih; Sar, Cuneyt
AIM: To compare posterior surgery alone versus combined anterior and posterior surgery for the management of spinal tuberculosis. MATERIAL and METHODS: Data from 31 consecutive patients who underwent surgery for spinal tuberculosis were analyzed retrospectively. Patients were divided into two groups as group A (posterior surgery alone) or group B (combined anterior and posterior surgery), and groups were compared in terms of invasiveness of the procedure, spinal deformity, fusion, neurological status, and postoperative complications. RESULTS: Group A included 16 patients (mean age: 56 years, range: 29-75) with a mean follow-up period of 29 months (range 12-60) while group B included 15 patients (mean age: 60 years, range: 35-73) with a mean follow-up period of 28 months (range 12-60). Procedurally, average operation time and mean length of hospitalization were shorter, and mean blood loss was lower in group A (p<0.05) compared to group B. Postoperative bone fusion took significantly (p<0.05) longer time in group A (10.5 +/- 2.1 months)than in group B (9.3 +/- 3.1 months), and all patients with a neurological deficit recovered completely during the postoperative period. No significant differences were observed between two groups with respect to postoperative complications (p>0.05). CONCLUSION: Combined anterior-posterior surgery may not be required for treating vertebral tuberculosis as posterior surgery alone appears to be sufficient.
Reverse total shoulder arthroplasty for failed treatment of proximal humerus fractures
(TURKISH ASSOC ORTHOPAEDICS TRAUMATOLOGY, 2021-01-01) Karademir, Gokhan; Tunali, Onur; Ersen, Ali; Akpinar, Sercan; Atalar, Ata Can
Objective: The aim of this study was to evaluate the functional and radiological outcomes and complications of reverse total shoulder arthroplasty (RTSA) for failed treatment of proximal humerus fractures (FTPHF). Methods: In this retrospective study, 20 patients (17 female, 3 male