Mehmet Akan

Dr. Mehmet Akan

Orthopaedics and Traumatology, Şişli Hamidiye Etfal Training and Research Hospital, Istanbul, İstanbul, Turkey (Türkiye)
orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

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

Representative Publications

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16 June 2025 in Orthopaedic Journal of Sports Medicine
Verified
Journal Article
Open access
Mehmet AkanMehmet Akan
Mehmet Akan
MAMuhlik Akyuerek
Muhlik Akyuerek
EKEmre Koraman
Emre Koraman
YIYusuf İyEtin
Yusuf İyEtin
ITİsMail Türkmen
İsMail Türkmen
Background: Subcoracoid cysts (ScCs) are often associated with rotator cuff tears, but their relationship with rotator cuff retears remains unclear. Purpose: To investigate the correlation between ScCs and retears in patients having undergone arthroscopic rotator cuff repair. Study Design: Cohort study; Level of evidence, 3. Methods: A retrospective analysis was conducted on patients who underwent arthroscopic rotator cuff repair from November 2016 to March 2022. Patients with Patte stage 1 or 2 tears were included. Preoperative magnetic resonance imaging (MRI) assessed subscapularis and supraspinatus tendons, biceps pulley, and ScC volume. Postoperative MRI evaluated the same parameters as preoperative MRI, with the addition of rotator cuff retear assessment. On the basis of preoperative MRI, patients were classified into group A (with cyst) and group B (without cyst). According to postoperative MRI, groups were further divided into A1 (without retear), A2 (with retear), B1 (without retear) and B2 (with retear). Postoperative decrease in ScC volume (ScC delta), Sugaya classification, and Constant score were compared. Results: The study included 109 patients: 69 in group A (A1 = 40, A2 = 29) and 40 in group B (B1 = 35, B2 = 5). The retear rate was significantly higher in group A (34.8%) than in group B (12.5%) ( P = .02). In group A, the median (minimum-maximum) ScC delta value was significantly greater in group A1 (2422 mm 3 [257 to 7503 mm 3 ]) compared with group A2 (625 mm 3 [–1060 to 1978 mm 3 ]), indicating no recurrence of the ScC ( P = .03). Postoperative Constant shoulder scores were higher in the no retear groups (group A1, 79.3 ± 8.2; group A2, 66.2 ± 13.4; group B1, 83.2 ± 8.5; group B2, 61.4 ± 5.9) ( P < .001). Conclusion: For the patients with ScCs detected on preoperative MRI scans, preserved tendon integrity after rotator cuff repair was associated with a reduction in ScC volume. This reduction was evident on postoperative MRI scans when compared with preoperative measurements. Conversely, compromised tendon integrity did not lead to a significant reduction in ScC volume after surgery, potentially suggesting cyst reformation. Therefore, the postoperative identification of an ScC may indirectly indicate rotator cuff retear.

16 December 2025 in The Journal of Foot and Ankle Surgery
Verified
Journal Article
Closed access
MTMehmed Nuri Tütüncü
Mehmed Nuri Tütüncü
AKAbdullah Burak Kara
Abdullah Burak Kara
Mehmet AkanMehmet Akan
Mehmet Akan
EUEsat Uygur
Esat Uygur
TOTolga Onay
Tolga Onay

3 December 2024 in Joint Diseases and Related Surgery
Verified
Journal Article
Open access
Mehmet AkanMehmet Akan
Mehmet Akan
MTMehmed Nuri Tütüncü
Mehmed Nuri Tütüncü
OÖOğuzhan Özyaman
Oğuzhan Özyaman
CKCemal Kocaaslan
Cemal Kocaaslan
OPOğuz Şükrü Poyanlı
Oğuz Şükrü Poyanlı
Joint Diseases and Related Surgery (JDRS), the official journal of the Turkish Joint Diseases Foundation, is an international, peer-reviewed, immediate open access journal. All published articles in JDRS has been free for everyone, without embargo, since 1990.

12 November 2025 in HIP International
Verified
Journal Article
Closed access
YIYusuf Iyetin
Yusuf Iyetin
EKEmre Koraman
Emre Koraman
Mehmet AkanMehmet Akan
Mehmet Akan
MAMuhlik Akyurek
Muhlik Akyurek
Background: Total hip arthroplasty (THA) is an effective treatment for advanced hip osteoarthritis, particularly in complex cases such as Crowe Type 3 and 4 developmental dysplasia of the hip (DDH). This study aimed to compare radiological and early clinical outcomes of conventional (cTHA) and robotic (rTHA) THA in patients with Crowe Type 3 and 4 DDH. Methods: Patients who underwent cTHA or rTHA were retrospectively analysed. Preoperative and postoperative clinical parameters, including range of motion (ROM), visual analogue scale (VAS) pain scores, modified Harris Hip Score (mHHS), and leg-length discrepancy, were evaluated. Radiological assessments included implant positioning (acetabular inclination and anteversion, femoral anteversion) using x-ray and CT imaging. Operative durations for cTHA and rTHA were also compared. Results: A total of 45 patients (52 hips) were included. Both groups showed significant improvements in clinical and radiological outcomes. Postoperative VAS pain scores were lower in the rTHA group (1.35 ± 1.00 vs. 2.41 ± 1.14 for cTHA), and mHHS was higher (92.34 ± 5.68 vs. 79.68 ± 5.92 for cTHA). ROM and radiological parameters, such as acetabular inclination (37.11 ± 3.37° for rTHA vs. 41.13 ± 6.49° for cTHA) and anteversion (17.59 ± 1.78° for rTHA vs. 21.87 ± 1.71° for cTHA), were more precise in rTHA. Operative time was longer for rTHA (117.06 ± 8.16 vs. 79.71 ± 6.79 minutes). Conclusions: Robotic THA achieved better implant positioning and superior early clinical outcomes compared to conventional THA in complex DDH cases, despite longer surgical times.

26 October 2023 in TURKISH JOURNAL OF MEDICAL SCIENCES
Verified
Journal Article
Open access
PDF file
MAMuhlik Akyuerek
Muhlik Akyuerek
EKEmre Koraman
Emre Koraman
YIYusuf İyEti̇n
Yusuf İyEti̇n
Mehmet AkanMehmet Akan
Mehmet Akan
Background/aim: Impacted valgus proximal humerus fracture has been known to be challenging in terms of treatment and outcomes since it was defined. Moreover, it is a type of fracture that is difficult to treat. In addition, exact limits have not yet been determined regarding which parameters affect patients? functional and reported outcomes. The purpose of this study was to compare the radiological results of patients with impacted valgus proximal humerus fractures treated conservatively and surgically and to evaluate the effect of these radiological parameters on functional outcomes. Materials and methods: A total of 79 patients who were treated between 2015 and 2021 with a diagnosis of impacted valgus fracture were evaluated retrospectively. Patients treated conservatively (Group 1) and surgically (Group 2) were evaluated in terms of radiological measurements (tubercle displacement (TD), cephalodiaphyseal angle (CDA), medial hinge (MH), cephaloglenoid angle (CGA), medial hinge impaction (MHI), American Shoulder and Elbow Surgeons Shoulder Score (ASES), Constant Shoulder Score, and functional outcomes (range of motion). The effect of radiological parameters on clinical outcomes was analyzed by a correlation test. Results: In the postoperative period, the ASES and Constant scores of the patients in Group 2 were significantly higher than those of the patients in Group 1. Additionally, Group 2 had better results in terms of passive extension, active internal rotation, and active/passive external rotation. Patients in both groups exhibited improvements in radiological parameters, and the correlation test showed that MH and MHI were mostly related to ASES and Constant scores. Conclusion: The monitoring and treatment of impacted valgus proximal humerus fractures remain controversial. Although radiological parameters are a guide for orthopedic surgeons, the limits have not been clearly defined. In this study, in addition to all parameters, the effect of MH and MHI on functional results was emphasized.

31 May 2026 in İzmir Katip Çelebi Üniversitesi Sağlık Bilimleri Fakültesi Dergisi
Verified
Journal Article
Open access
EMEmel Mete
Emel Mete
NKNilüfer Kablan
Nilüfer Kablan
Mehmet AkanMehmet Akan
Mehmet Akan
KOKorhan Ozkan
Korhan Ozkan
Objective: The primary aim of this study was to investigate the motivators and barriers influencing supervision preferences for postoperative exercises in patients undergoing bone tumor resection. The secondary aim was to provide preliminary insights into how the experience of supervision may affect future supervision preferences. This study aimed to investigate the motivators and barriers influencing supervisor preference for postoperative exercises in patients undergoing bone tumor resection and to evaluate the impact of experience with the preferred supervisor on future choices. Material and Methods: This study used a qualitative approach using thematic analysis. Participants who underwent bone tumor resection surgery participated in either supervised or non-supervised exercise programs lasting six weeks. Semi-structured, in-depth interviews were conducted with participants both before and after the exercise period. Results: The study concluded that participants preferred face-to-face supervised exercise to feel safe, perform exercises correctly, and follow the program with discipline. Time flexibility and the comfort of exercising at home encouraged the choice of online supervision. Negative experiences, issues within the health system, and transportation difficulties deterred participants from preferring face-to-face supervision. Technical inadequacies were identified as the sole barrier to choosing online supervisor type. Conclusion: Self-discipline, the need for companionship, transportation, and the need to feel confident are the strongest factors that determine the type of supervisor.