Umur Batak

Dr. Umur Batak

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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13 April 2026 in Orthopaedic Journal of Sports Medicine
Verified
Journal Article
Open access
NDNihat Demirhan Demirkıran
Nihat Demirhan Demirkıran
GVGustavo Vinagre
Gustavo Vinagre
SÖSüleyman Kaan Öner
Süleyman Kaan Öner
Umur BatakUmur Batak
Umur Batak
GSGonzalo Samitier Solís
Gonzalo Samitier Solís
Purpose: To compare braided and nonbraided hamstring tendon grafts in anterior cruciate ligament (ACL) reconstruction, specifically examining graft thickness, rerupture rates, and clinical outcomes, in order to assess whether braided grafts offer measurable advantages. Study Design: Cohort study; Level of evidence, 3. Methods: This retrospective study included 154 patients who underwent single-bundle ACL reconstruction between January 2017 and October 2022. Patients were divided into braided (n = 78) and nonbraided (n = 76) hamstring autograft groups. Graft diameter was measured intraoperatively at the midportion using calibrated sizing tubes after standardized preconditioning. The cohort was predominantly male (92.2%). Primary outcomes included graft diameter, rerupture rates, and Knee injury and Osteoarthritis Outcome Score (KOOS), International Knee Documentation Committee (IKDC) score, and Lysholm score at baseline and 6, 12, and 24 months. Comparative analysis used the Mann-Whitney U test for continuous data and Fisher exact test for categorical data. Kaplan-Meier curves were used descriptively to illustrate rerupture-free survival. Results: Braided grafts showed a greater mean diameter (9.39 ± 0.63 mm) compared with nonbraided grafts (8.87 ± 0.74 mm) ( P < .001) and a numerically lower rerupture rate (2/78 [2.6%] vs 6/76 [7.9%]); however, this difference did not reach statistical significance (Fisher exact test, P = .16; fragility index = 1). Functional outcomes (KOOS, IKDC, Lysholm) improved over time in both groups, with no statistically significant between-group differences at 2 years. Conclusion: Braided hamstring tendon grafts reliably achieved increased graft thickness, whereas the lower rerupture rate was numerical only, was not statistically significant, and was statistically fragile. Braiding can be considered an intraoperative option to optimize graft diameter without compromising clinical outcomes, but the findings should be interpreted as exploratory.

12 August 2026 in Life
Verified
Journal Article
Open access
PDF file
Bünyamin ARIBünyamin ARI
Bünyamin ARI
FCFatmagül Can
Fatmagül Can
Umur BatakUmur Batak
Umur Batak
TDTuran cihan Dülgeroğlu
Turan cihan Dülgeroğlu
Serial presepsin measurements were evaluated for their prognostic value compared with conventional laboratory markers in predicting in-hospital mortality among older adults with hip fractures. This prospective observational study included 85 patients aged ≥65 years admitted with acute hip fractures between December 2025 and May 2026. Residual serum remaining after routine clinical laboratory sampling was obtained on admission (Day 1), Day 3, and Day 5; serum presepsin was measured by commercial ELISA, and routine parameters (C-reactive protein [CRP], white blood cell count, lymphocytes, monocytes, platelets, and liver enzymes) were analysed in the hospital laboratory. Renal function was assessed by serial creatinine and estimated glomerular filtration rate (eGFR). Patients were classified as survivors or non-survivors according to in-hospital outcome. Temporal trajectories were modelled with a linear mixed-effects model fitted to log-transformed presepsin, receiver operating characteristic (ROC) analysis assessed predictive performance, and internal validity was examined by bootstrap resampling. Of the 85 patients, 68 survived and 17 died during hospitalization; all deaths occurred between hospital days 5 and 12. Presepsin diverged progressively between groups, reaching significantly higher concentrations in non-survivors by Day 5 (median 207.70 vs. 147.21 ng/L; p < 0.001), with a Day 5 group-by-time interaction ratio of 1.76 (95% CI 1.38–2.25; p < 0.001). Day 5 presepsin showed the highest predictive accuracy (AUC = 0.868, 95% CI 0.774–0.945; optimism-corrected AUC 0.866), significantly outperforming CRP (AUC = 0.606; p = 0.003) and platelet count (AUC = 0.485; p < 0.001). The association persisted after adjustment for age, ASA class, fracture type, and eGFR, and Day 5 presepsin added discrimination to a baseline clinical model (ΔAUC 0.125; p = 0.015). The Youden-derived cutoff of 169.54 ng/L was unstable across bootstrap resamples (95% range 169.5–207.7 ng/L). Serial presepsin measurement, particularly on Day 5, is associated with in-hospital mortality in this population; these exploratory findings require external validation before any clinical application can be considered.

4 September 2026 in Medicine
Verified
Journal Article
Open access
SKSabit Numan Kuyubaşi
Sabit Numan Kuyubaşi
SÖSüleyman Kaan Öner
Süleyman Kaan Öner
SKSÜLEYMAN KOZLU
SÜLEYMAN KOZLU
BOBilgehan Ocak
Bilgehan Ocak
Umur BatakUmur Batak
Umur Batak
This study compares the clinical and radiological outcomes of volar plating alone and combined volar and radial column plating in the management of Arbeitsgemeinschaft für Osteosynthesefragen (AO) type C2–C3 distal radius fractures. This retrospective cohort study included 80 patients with AO type C2–C3 distal radius fractures who were treated with either single volar plating (n = 50) or combined volar and radial column plating (n = 30). The patients were followed up for a minimum of 2 years. Outcome measures included the Patient-Rated Wrist Evaluation score, wrist range of motion, radiological parameters (radial height, inclination, volar tilt, ulnar variance), and pinch strength. Patients treated with dual plating demonstrated significantly better Patient-Rated Wrist Evaluation scores at all follow-up points ( P < .05) as well as improved radial height, inclination, volar tilt, wrist flexion, and grip strength. Pronation values were more favorable in the single-plating group across all follow-up time points, while supination values differed only at the 6-month assessment; overall function and radiological alignment otherwise appeared more favorable in the dual-plating group. In AO type C distal radius fractures with radial styloid involvement or severe comminution, dual plate fixation demonstrated improved functional recovery and maintenance of radiographic alignment. Supplementary radial column fixation may therefore represent an effective treatment strategy for these challenging fracture patterns, warranting further prospective investigation.

13 October 2022
Verified
Book Chapter
Closed access
Umur BatakUmur Batak
Umur Batak
NDNihat Demirhan Demirkıran
Nihat Demirhan Demirkıran
Ön çapraz bağ (ÖÇB) yaralanmaları, diz ekleminde rotasyonel instabiliteye ve tibianın anterior translasyonuna yol açan, sporcularda sık karşılaşılan fonksiyonel sorunlardandır; bu yaralanmalara sıklıkla anterolateral kapsül ve lateral menisküs hasarları eşlik etmektedir. Tibianın iç rotasyonunu kontrol ederek dizin dönme stabilitesini sağlayan anterolateral ligamanın (ALL) anatomik varlığı ve önemi, ilk kez 1879 yılında Paul Segond tarafından tanımlanmış ve 2013 yılında Claes ve arkadaşları tarafından kadavra çalışmalarıyla kesin olarak ortaya konmuştur. Yapılan biyomekanik araştırmalar, ÖÇB yetmezliğine ALL hasarının da eklenmesinin iç rotasyonel gevşekliği belirgin şekilde artırdığını göstermektedir. Bu doğrultuda, özellikle revizyon ÖÇB cerrahilerinde, yüksek dereceli pivot-shift saptanan kronik vakalarda, genç hastalarda ve yüksek performans bekleyen sporcularda kombine ÖÇB ve ALL rekonstrüksiyonu uygulanması önerilmektedir. Cerrahi teknik olarak hamstring otogreftleri (grasilis ve semitendinozus) tercih edilmekte, hazırlanan greftler diz 30 derece fleksiyonda ve nötral pozisyondayken, gelecekte oluşabilecek lateral kompartman artrozu riskini en aza indirmek için aşırı gerimden kaçınılarak fikse edilmektedir. Sonuç olarak ALL rekonstrüksiyonu, revizyon cerrahilerinde ek bir komplikasyon yaratmaksızın anterolateral rotatuar stabiliteye ciddi katkı sağlayan, rehabilitasyon sürecini olumsuz etkilemeyen, minimal invaziv ve son derece işlevsel anatomik bir cerrahi girişimdir. Anterior cruciate ligament (ACL) injuries are common functional problems among athletes that lead to rotational instability in the knee joint and anterior translation of the tibia; these injuries are frequently accompanied by anterolateral capsule and lateral meniscus damages. The anatomical presence and importance of the anterolateral ligament (ALL), which provides rotational stability to the knee by controlling the internal rotation of the tibia, was first described by Paul Segond in 1879 and conclusively demonstrated by Claes and colleagues in 2013 through cadaveric studies. Biomechanical research shows that the addition of ALL damage to ACL insufficiency significantly increases internal rotational laxity. Accordingly, combined ACL and ALL reconstruction is recommended especially in revision ACL surgeries, chronic cases with high-grade pivot-shift, young patients, and athletes expecting high performance. As a surgical technique, hamstring autografts (gracilis and semitendinosus) are preferred; the prepared grafts are fixed while the knee is at 30 degrees of flexion and in a neutral position, avoiding over-tension to minimize the risk of future lateral compartment arthrosis. Consequently, ALL reconstruction is a minimally invasive and highly functional anatomical surgical procedure that significantly contributes to anterolateral rotatory stability in revision surgeries without creating additional complications or negatively affecting the rehabilitation process.

16 September 2026 in Archives of Current Medical Research
Verified
Journal Article
Closed access
NDNihat Demirhan Demirkıran
Nihat Demirhan Demirkıran
SÖSüleyman Kaan Öner
Süleyman Kaan Öner
AKAli İhSan Kılıç
Ali İhSan Kılıç
Umur BatakUmur Batak
Umur Batak
Background: Medial open-wedge high tibial osteotomy (HTO) is an established treatment for medial compartment osteoarthritis in patients with varus alignment. Accurate K-wire placement is essential for a safe and reproducible osteotomy, yet it often requires repeated fluoroscopic checks, increasing radiation exposure. To evaluate whether an anterior cruciate ligament (ACL) tibial drill guide improves the accuracy of K-wire placement and reduces radiation exposure and surgical time compared with the freehand technique.Methods: This retrospective study included 40 patients who underwent medial open-wedge HTO. Patients were divided into a Freehand Group (n=20) and a Guided Group (n=20), in which an ACL tibial drill guide was used for K-wire placement. Primary outcomes were the number of fluoroscopic images, radiation dose, surgical time, and K-wire repositioning rate.Results: The Guided Group required significantly fewer fluoroscopic images (11.7 ± 2.8 vs. 27.2 ± 5.2; p

13 October 2022
Verified
Book
Open access
PDF file
GGGökhan Güzel
Gökhan Güzel
OGOrtaç Güran
Ortaç Güran
Umur BatakUmur Batak
Umur Batak
MÇMehmet Ümit Çetin
Mehmet Ümit Çetin
SCSercan Capkin
Sercan Capkin
AÇAli Kutta Çelik
Ali Kutta Çelik
Akademisyen Yayınevi yöneticileri, yaklaşık 30 yıllık yayın tecrübesini, kendi tüzel kişiliklerine aktararak uzun zamandan beri, ticarî faaliyetlerini sürdürmektedir. Anılan süre içinde, başta sağlık ve sosyal bilimler, kültürel ve sanatsal konular dahil 2000’i aşkın kitabı yayımlamanın gururu içindedir. Uluslararası yayınevi olmanın alt yapısını tamamlayan Akademisyen, Türkçe ve yabancı dillerde yayın yapmanın yanında, küresel bir marka yaratmanın peşindedir. Bilimsel ve düşünsel çalışmaların kalıcı belgeleri sayılan kitaplar, bilgi kayıt ortamı olarak yüzlerce yılın tanıklarıdır. Matbaanın icadıyla varoluşunu sağlam temellere oturtan kitabın geleceği, her ne kadar yeni buluşların yörüngesine taşınmış olsa da, daha uzun süre hayatımızda yer edineceği muhakkaktır. Akademisyen Yayınevi, kendi adını taşıyan “Bilimsel Araştırmalar Kitabı” serisiyle Türkçe ve İngilizce olarak, uluslararası nitelik ve nicelikte, kitap yayımlama sürecini başlatmış bulunmaktadır. Her yıl Mart ve Eylül aylarında gerçekleşecek olan yayımlama süreci, tematik alt başlıklarla devam edecektir. Bu süreci destekleyen tüm hocalarımıza ve arka planda yer alan herkese teşekkür borçluyuz.