Current Organizations / Institutes

The organizations/institutes from the scholar's latest article

Previous Organizations / Institutes

The organizations / institutes from the scholar's other articles in the past ten years


Oğuzhan Gökalp has a total of 83 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Comparison of Open and Percutaneous Treatment in Trigger Finger: A Retrospective Analysis of Functional Results and Cost-Effectiveness

    by Oğuzhan Gökalp, Gökhan İlYas, Fikri Burak İpÇi

    Introduction Trigger finger, a common condition caused by flexor tendon compression in adults, often requires surgical release when conservative treatment fails. This study retrospectively compared the outcomes and costs of percutaneous needle release and traditional open release to treat trigger fingers.Article title is mismatch between Job sheet and author provided manuscript. Kindly check and confirm.Thank you for pointing this out. The correct form of the title is:“Comparison of Open and Percutaneous Treatment in Trigger Finger: A Retrospective Analysis of Functional Results and Cost-Effectiveness.”Please use “Cost-Effectiveness” with a capital E. Methods A retrospective analysis of patients over 18 undergoing trigger finger surgery was conducted (n = 92). The patients were divided into two groups: open surgery (n = 43) and percutaneous release (n = 49). Treatment outcomes were assessed using the Gilbert questionnaire (failure, complications, and satisfaction), and functional outcomes were measured using the Quick Disabilities of the Arm, Shoulder, and Hand scores. The cost analysis was based on social security billing. Results The mean quick disabilities of the arm, shoulder, and hand scores are 10 ± 5.7 for the percutaneous group and 10.4 ± 5.7 for the open surgery group (p = 0.69). Finger stiffness was reported in 2% of the percutaneous group and 30% of the open surgery group (p = 0.03), whereas scarring was observed in 0% of the percutaneous group and 23% of the open surgery group (p < 0.01). Returning to daily work was faster in the percutaneous group, with 67% resuming within a week compared to 0% in the open group (p < 0.01). The procedure costs averaged 156.3 ± 6.6 United States dollars for the percutaneous group and 182.9 ± 24.2 USD (United States dollars) for the open surgery group (p < 0.01). Conclusion Percutaneous needle release appears to be a more cost-effective alternative to traditional open surgery for the trigger finger, with similar functional outcomes, faster recovery, fewer complications, and lower costs.

  • Open Access

    Dorsoradial vs. circular cast for distal radius fractures: a retrospective comparative cohort study

    by Oğuzhan Gökalp, Gökhan Ilyas

    Non-articular dorsally angulated distal radius fractures (DRFs) are often managed conservatively, yet the optimal cast design remains debated. Dorsoradial (DR) casting leaves the ulnar border open, potentially better accommodating swelling and reducing early cast-related interventions. A single-center retrospective cohort study included adults with AO-23-A2/A3 DRFs treated between May 2019 and May 2023. Patients received either a DR cast (n=88) or a conventional circular cast (CC) (n=122) for a standard five-week immobilization. Primary outcomes included functional (Patient-Rated Wrist Evaluation, PRWE) and clinical (Gartland-Werley, GW) scores, along with radiographic alignment (volar tilt, radial inclination, radial height) at a median follow-up of 118.5 weeks. Secondary outcomes were early cast revisions (release or reinforcement) and complications. Statistical tests included Mann-Whitney U, χ²/Fisher, with Bonferroni-adjusted α=0.017. Baseline characteristics were similar across groups: mean age 60±11 years, 87% female, comparable AO subtype distribution, and osteoporosis status. Early revision: DR 22.7% vs. CC 36.1% (absolute risk reduction 13% points; odds ratio: 0.51, p=0.038), primarily due to fewer cast releases for swelling/pain (12.5% vs. 32.8%, p=0.001). Function: PRWE scores were 34±18 (DR) vs. 36±18 (CC), p=0.435; GW scores were good-excellent in 79.5% vs. 77.8%, p=0.508. Radiographic outcomes: final volar tilt and radial height were similar (both p>0.08). DR casts better preserved radial inclination (median change 0°, p=0.057) compared to CC casts, which lost 1.3° (-6%, p<0.001); however, the net 1.2° intergroup difference is below the 5° minimal clinically important difference (MCID) and is clinically negligible. No cases of compartment syndrome or acute carpal tunnel occurred. Dorsoradial casting delivers functional and radiographic outcomes equivalent to circular casting while reducing early revision rates by one-fifth. By lowering unplanned cast adjustments and follow-up visits, the DR technique represents a pragmatic alternative for centers with limited monitoring capacity treating dorsally angulated extra-articular DRFs.

  • Open Access

    Osteoid Osteoma of the Talus Mimicking Pigmented Villonodular Synovitis in a 15-Year-Old Male

    by Oğuzhan Gökalp, Cenk Ermutlu, Mehmet Bartu Sarısözen, Kemal Durak, Ulviye Yalçınkaya, Adnan Çakar

    Osteoid osteoma is a benign tumor of the bone, which tends to occur in diaphysis or metaphysis of the long bones. The lesion is generally intraosseous with vague clinical symptoms, hence given the name great mimicker . When located subperiosteally and juxta-articulary, atypical clinical presentation and radiographs may lead to a delayed or missed diagnosis. Performing surgery with a misdiagnosis carries the risk of incomplete resection of the lesion and recurrence. We report the case of a 15-year-old male with a subperiosteal osteoid osteoma of the talus, who was misdiagnosed with pigmented villonodular synovitis (PVNS) and operated through anterior ankle arthrotomy. A nodular lesion, 1 cm in diameter, with a hard rubber consistency, was removed from the dorsal aspect of the talar neck. The pathologic specimens were consistent with subperiosteal osteoid osteoma. The patient’s symptoms resolved rapidly in the early postoperative period. The patient remained asymptomatic at the 20-month follow-up and the control magnetic resonance imaging revealed no signs of recurrence. Atypical radiographs and clinical presentation of juxta-articular subperiosteal osteoid osteomas cause misdiagnosis, delay in diagnosis, incomplete resection, and recurrence. It is important to keep in mind “juxta-articular subperiosteal osteoid osteoma” in the differential diagnosis of cases with suspected pigmented villonodular synovitis.

  • Open Access

    Comparison of Open and Percutaneous Treatment in Trigger Finger: Functional Results and Cost-effectiveness

    by Oğuzhan Gökalp, Gökhan İlYas, Fi̇kRi̇ Burak İpÇi̇

    Introduction: Trigger finger, a common condition caused by flexor tendon compression in adults, often requires surgical release when conservative treatment fails. This study retrospectively compared the outcomes and costs of percutaneous needle release and traditional open release to treat trigger fingers. Methods: A retrospective analysis of patients over 18 undergoing trigger finger surgery was conducted (n=92). The patients were divided into two groups: open surgery (n=43) and percutaneous release (n=49). Treatment outcomes were assessed using the Gilbert questionnaire (failure, complications, and satisfaction), and functional outcomes were measured using the Quick Disabilities of the Arm, Shoulder, and Hand scores. The cost analysis was based on social security billing. Results: The mean Quick-Disabilities of the Arm, Shoulder, and Hand scores in the percutaneous group and 10.4±5.7 in the open surgery group (p=0.69). Finger stiffness was reported in 2 % of the percutaneous group and 30% of the open surgery group (p=0.03), whereas scarring was observed in 0% of the percutaneous group and 23% of the open surgery group (p<0.01). Returning to daily work was faster in the percutaneous group, with 67% resuming within a week compared to 0% in the open group (p<0.01). The procedure costs averaged 156.3±6.6 United States dollars for the percutaneous group and 182.9±24.2 USD (United States dollars) for the open surgery group (p<0.01). Conclusion: Percutaneous needle release appears to be a more cost-effective alternative to traditional open surgery for the trigger finger, with similar functional outcomes, faster recovery, fewer complications, and lower costs.

  • Open Access

    Osteoporosis Awareness and Effecting Factors: A Descriptive Cross-Sectional Study

    by Oğuzhan Gökalp, Çiğdem Kaya, Yılmaz Kaya

    Osteoporosis Awareness and Effecting Factors: A Descriptive Cross-Sectional Study - Turkish Journal of Osteoporosis


  • Open Access

    The relationship between the duration and the retraction and atrophy grades in traumatic isolated full-thickness supraspinatus tears in young patients

    by Gokhan Ilyas, Fikri Burak Ipci, Oguzhan Gokalp, Ercument Egeli

    Background: The study aimed to determine the grade of retraction and atrophy according to the time elapsed in traumatic isolated full-thickness supraspinatus (SS) tears in young patients. Methods: One thousand twenty-six patients, who underwent arthroscopic shoulder surgery, were retrospectively reviewed. Pre-operative magnetic resonance imaging (MRI) of 69 patients aged 18 to 40 years with isolated traumatic full-thickness SS lesions remaining after exclusion criteria were evaluated for tendon retraction and atrophy grades. SS retraction was determined from a T2-weighted oblique coronal MRI slice, and the atrophy grade was determined from the T1-weighted oblique sagittal MRI slice. The patients were divided into four groups 0–1 month, 1–3 months, 3–6 months, and 6–12 months according to the time between trauma and MRI. The relationship of tendon retraction and muscle atrophy with elapsed time was evaluated, in addition, comparisons between groups were made. Results: Thirty-one (45%) of the patients were female and their mean age was 30 ± 7.3 (18–40) years. The mean age of men was 30.5 ± 6.9 (18–39) years (p = 0.880). The time between rupture and MRI was moderately correlated with retraction and strongly correlated with atrophy grades (r = 0.599, 0.751, respectively). It was observed that there was a statistically significant difference between the 1st (0–1 month) and 2nd (1–3 months) groups (p = 0.003, 0.001, respectively), and between the 2nd and 3rd (3–6 months) groups (p = 0.032, 0.002, respectively), but there was no significant difference between the 3rd and 4th (6–12 months) groups (p = 0.118, 0.057, respectively). In addition, there was a moderate correlation between tendon retraction and atrophy grades (r = 0.668). Power (1- b) in post hoc analysis was calculated as 0.826. Conclusions: The current study, supported by arthroscopy, showed that there is a moderate and strong positive correlation between the time elapsed after trauma and the level of retraction and degree of atrophy in traumatic full-thickness SS tears, and demonstrated the importance of early surgical intervention in young patients.


  • Open Access

    The effect of cuff arthropathy stage on sleep disturbance and kinesiophobia in reverse shoulder arthroplasty patients

    by Gokhan Ilyas, Ercument Egeli, Fikri Burak Ipci, Oguzhan Gokalp

    The current study aimed to determine the changes in pre-and post-operative Pittsburg sleep quality index (PSQI) and Tampa scale of kinesiophobia (TSK) values ​​according to the Hamada classification in patients who underwent reverse shoulder arthroplasty (RSA) for rotator cuff tear arthropathy (RCTA). One hundred and eight patients who underwent RSA for RCTA were reviewed retrospectively. The patients were divided into two groups with low grade (stages 1-2-3) (n = 49) and high grade (stages 4a-4b-5) (n = 59) according to the Hamada classification, which is the radiographic evaluation of RCTA. PSQI and TSK values ​​were calculated preoperatively, and post-operatively at the 6th week, 6th month, and 1st year. The change in PSQI and TSK values ​​between the evaluations and the effect of staging according to the Hamada classification on this change was examined. When compared in preoperative evaluations, PSQI and TSK scores were found to be lower in low-grade group 1 (7.39 ± 1.56, 51.88 ± 4.62, respectively) than in high-grade group 2 (10.47 ± 2.39, 57.05 ± 3.25, respectively) according to Hamada classification (both p < 0.001). In the postoperative evaluations, PSQI and TSK results decreased gradually compared to the preoperative evaluations, and there was a severe decrease in both parameters between the 6th-week and 6th-month evaluations (both p < 0.001). Preoperatively, 102 (95%) patients had sleep disturbance (PSQI ≥ 6), and 108 (100%) patients had high kinesiophobia (TSK > 37). In the 1st year follow-ups, sleep disturbance was observed in 5 (5%) patients and kinesiophobia in 1 (1%) patient. When the Hamada stages were compared, it was seen that there was a significant difference before the operation (both p < 0.001), but the statistically significant difference disappeared in the PSQI value in the 1st year (p = 0.092) and in the TSK value in the 6th month (p = 0.164) post-operatively. It was observed that Hamada staging caused significant differences in PSQI and TSK values ​​in the preoperative period but did not affect the clinical results after treatment. RSA performed based on RCTA improves sleep quality and reduces kinesiophobia. RCTA stage negatively affects PSQI and TSK before the operation but does not show any effect after the treatment.