Olgar Birsel

Dr. Olgar Birsel


Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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6 January 2017 in Acta Orthopaedica et Traumatologica Turcica
Verified
Journal Article
Open access
MUMehmet Can Unlu
Mehmet Can Unlu
AKAybars Kıvrak
Aybars Kıvrak
MKMahmut Enes Kayaalp
Mahmut Enes Kayaalp
OBOlgar Birsel
Olgar Birsel
IAIsık AKGUN
Isık AKGUN
The aim of this study was to determine factors associated with the likelihood of a better clinical outcome after the peritendinous injection of PRP for the treatment of chronic tendinopathy and identify whether PRP represents an effective treatment option for chronic tendinopathies. The study included 214 patients (86 males and 128 females; mean age: 39.3 (18–75) years) who received PRP injections for tendinopathy refractory to conventional treatments. The mean duration of symptoms at the moment of the PRP treatment was 8.3 months. Primary outcome measurement was perceived improvement in symptoms for each anatomic compartment for upper and lower limbs at 6 months after treatment. Also, a visual analog scale (VAS) score (pain intensity on a 0–10 scale) was used for pain scoring questionnaire before treatment, 6 weeks and 6 months following the PRP injection(s). To identify factors associated with the likelihood of a better clinical outcome, patients were categorized on the basis of their perceived improvement in symptoms 6 months after the PRP injection(s)—that is, as lower (less than 50% global improvement) or higher (more than 50% global improvement). A visual analogue scale score and perceived improvement in symptoms were significantly lower after peritendinous injection in 6-week and 6-month follow-ups compared with the baseline (P < 0.001) except for peroneal and Achilles tendons. Overall, 83% of patients indicated moderate to complete improvement in symptoms. The most common injection sites were the lateral epicondyle, Achilles, and patellar tendons. Furthermore, 30% of patients received only 1 injection, 30% received 2 injections, and 40% received 3 or more injections. A total of 85% of patients were satisfied (more than 50% global improvement) with the procedure. In addition, upper limb tendons, increase in the age, and female gender were associated with a higher likelihood of perceived improvement in symptoms. In the present retrospective study assessing PRP injections in the treatment of chronic tendinopathy, a moderate improvement (>50%) in pain symptoms was observed in most of the patients. Our research found that results were most promising with patellar and lateral epicondylar tendinopathy in the short to medium term. Female patients, patients with upper extremity tendinopathy and older patients appeared to benefit more from PRP injection. Level IV, Therapeutic study. ER - Keywords Platelet-rich plasma Tendinopathy Injection Achilles tendon Patellar tendon Lateral epicondylitis

25 October 2019 in Journal of Bone and Joint Surgery
Verified
Journal Article
Closed access
IEİlker Eren
İlker Eren
AEAli Erşen
Ali Erşen
OBOlgar Birsel
Olgar Birsel
AAAta Can Atalar
Ata Can Atalar
POPiraye Oflazer
Piraye Oflazer
MDMehmet Demirhan
Mehmet Demirhan
Background: Facioscapulohumeral dystrophy (FSHD) is an autosomal-dominant myopathy characterized by facial and shoulder girdle muscle weakness with scapular winging. Scapulothoracic arthrodesis is a successful treatment approach for patients with <90° of shoulder elevation. The purpose of the present study was to assess functional outcomes and complications following scapulothoracic arthrodesis in patients with FSHD. Methods: We retrospectively reviewed the records of 40 patients (64 shoulders) in whom scapulothoracic arthrodesis was performed. To achieve fusion, multiple multifilament cables were used together with autologous bone and allograft bone. Preoperative and postoperative shoulder elevation and abduction; Disabilities of the Arm, Shoulder and Hand (Quick version, qDASH) scores; and pulmonary function were compared. Recorded complications were classified as pulmonary or scapular. Results: The mean age of the patients at the time of the operation was 25.4 years (range, 15 to 60 years), and the mean duration of follow-up was 71.2 months (range, 12 to 185 months). When the preoperative values were compared with those at the latest follow-up, significant improvement was noted in terms of elevation (from a mean [and standard deviation] of 60.6° ± 17.2° to 123.7° ± 26.7°; p < 0.001), abduction (from 52.7° ± 15.8° to 98.8° ± 20.3°; p < 0.001), and qDASH scores (from 34.7 ± 11.4 to 13.3 ± 13.1; p < 0.001). The overall complication rate was 26.6%. There were 7 pulmonary complications (4 pneumothoraxes, 2 pleural effusions, and 1 major atelectasis), and 5 chest tube placements were required. Ten complications (including 3 rib fractures, 1 brachial plexus palsy, 2 cases of implant irritation, 2 nonunions, 1 delayed union, and 1 scapular fracture) were related to the scapular fixation, and 7 revision procedures were required. Scapulothoracic fusion was achieved in all patients but 1, who had a scapular fracture. Pulmonary function tests were performed for 19 patients, and no difference was observed between preoperative and postoperative results. Conclusions: Scapulothoracic arthrodesis with use of multifilament cables is a successful surgical technique with high fusion rates and low morbidity. Pulmonary complications are common but resolve with careful attention. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

1 December 2021 in Journal of Shoulder and Elbow Surgery
Verified
Journal Article
Closed access
KBKadir Buyukdogan
Kadir Buyukdogan
LALercan Aslan
Lercan Aslan
ÖKÖzgür Koyuncu
Özgür Koyuncu
IEİlKer Eren
İlKer Eren
OBOlgar Birsel
Olgar Birsel
MDMehmet Demirhan
Mehmet Demirhan

4 January 2020 in Acta Orthopaedica et Traumatologica Turcica
Verified
Journal Article
Open access
MDMuhammed Taha Demir
Muhammed Taha Demir
SBSema Ertan Birsel
Sema Ertan Birsel
MSMuhammet Salih
Muhammet Salih
YPYusuf Pirinçci
Yusuf Pirinçci
OBOlgar Birsel
Olgar Birsel
HKHayrettin Kesmezacar
Hayrettin Kesmezacar
Objective: This study aimed to evaluate the functional outcomes of the surgical treatment performed with a buttress plate for the trochlear and distal capitellum fractures with posterior extension in the humerus. Methods: The data belonging to 6 female and 4 male patients with a mean age of 43.8±11.1 (34–72) years were retrospectively evaluated. The mean follow-up period was 59.6±38.79 (22–127) months. The trochlear extension and posterior comminution of the fractures were assessed through the initial X-rays and computerized tomography images. Ten patients were classified as Dubberley type B. All fractures were treated surgically, with open reduction and internal fixation using a lateral buttress plate, headless cannulated screws, and Kirschner (K)-wires. The passive flexion and extension exercises were initiated at the first postoperative day. The patients were evaluated clinically and radiographically at the final follow-up. The outcomes were quantified using the Mayo Elbow Performance Index (MEPI), visual analog scale (VAS) pain score, and the patient’s opinion. Results: At the final follow-up, the mean elbow flexion was 137.5°±3° (132°–140°), extension was −17.9°±9.2° (10°–35°), pronation was 72.2°±2.6° (68°–75°), and supination was 78.9°±4.09 (72°–85°). The mean MEPI score was calculated as 95.5±5.98 (85–100). According to the MEPI score, 8 patients were evaluated as excellent and 2 as good. The mean VAS pain score was 0.8±1.03 (0–2). The subjective patient evaluation was recorded as excellent in 5 patients, good in 3 patients, and moderate in 2 patients. One patient developed avascular necrosis and 2 patients had elbow joint arthrosis. K-wire migration was observed in one patient. Loss of reduction, nonunion, malunion, reflex sympathetic dystrophy, or heterotopic ossification were not encountered. Conclusion: The management of distal humeral fractures is challenging, and favorable outcomes are closely associated with early joint motion. A solid fixation grants early mobilization. An internal fixation using lateral buttress plate, headless cannulated screws, and interfragmentary K-wires provides a solid and secure construction that allows early postoperative joint motion. Level of Evidence: Level IV, Therapeutic study Cite this article as: Demir MT, Ertan Birsel S, Salih M, Pirinçci Y, Birsel O, Kesmezacar H. Outcome after the surgical treatment of the Dubberley type B distal humeral capitellar and trochlear fractures with a buttress plate. Acta Orthop Traumatol Turc 2020; 54(4): 364-71.

1 May 2022 in Journal of Shoulder and Elbow Surgery
Verified
Journal Article
Closed access
IEİlKer Eren
İlKer Eren
KBKadir Büyükdogan
Kadir Büyükdogan
BYBatuhan Yürük
Batuhan Yürük
LALercan Aslan
Lercan Aslan
OBOlgar Birsel
Olgar Birsel
MDMehmet Demirhan
Mehmet Demirhan

29 July 2025 in Journal of Shoulder and Elbow Surgery
Verified
Journal Article
Closed access
OBOlgar Birsel
Olgar Birsel
IEİlKer Eren
İlKer Eren
MCMehmet Chodza
Mehmet Chodza
ÖKÖzgür Koyuncu
Özgür Koyuncu
MDMehmet Demirhan
Mehmet Demirhan