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Formerly Journal of Turgut Ozal Medical Center - ISSN 1300-1744

  • Annals of Medical Research

    Annals of Medical Research International Monthly Published Medical Journal

  • Annals of Medical Research

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  • Annals of Medical Research

    Annals of Medical Research indexed in TÜBİTAK/ULAKBİM Tıp Veri Tabanı

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  • Annals of Medical Research
  • Annals of Medical Research
  • Annals of Medical Research
  • Annals of Medical Research

Dear readers,

Our journal is the official publication of Inonu University Medical Faculty and published uninterruptedly for 25 years. It was first published as the name of Inonu University Medical Journal and later as Journal of Turgut Ozal Medical Center. During its publication period, the journal accepted Turkish or English articles for publication.

Abstracting in an international index is just a paramount objective in the 25th year of the journal. Because of this goal, it was necessary to make a decision both in terms of journal name and publication language. It was important in this respect that the name of a general medical journal should be related to medicine again and it should be in English. For these reasons, the name of the journal was switched to Annals of Medical Research and its publication language is changed to in English. The logo of the journal was chosen as an apricot, which is the symbol of our city Malatya, the world capital of apricot. I hope the journal succeeds with its new name. Annals of Medical Research is published monthly.



Angulated versus parallel headless cannulated screw fixation for type 1 capitellum fracture: A finite element study (p.2550-5)

Angulated versus parallel headless cannulated screw fixation for type 1 capitellum fracture: A finite element study (p.2550-5)

Nazmi Bulent Alp1, Tugba Efendigil2, Ozgur Demir3, Kerem Bilsel4, Onur Can Kalay5, Fatih Karpat5,
Oguz Dogan5, Gokhan Akdag6
1Clinic of Orthopedics and Traumatology, Bursa City Hospital, Bursa, Turkey
2Industry Engineering, Yildiz Teknik University, Istanbul, Turkey
3Naval Architecture and Marine Engineering, Yildiz Teknik University, Istanbul, Turkey
4Department of Orthopedics and Traumatology, Bezmialem Vakif University, Istanbul, Turkey
5Mechanical Engeneering, Uludag University, Bursa, Turkey
6Clinic of Orthopedics and Traumatology, Beylikduzu State Hospital, Istanbul, Turkey
Copyright © 2020 by authors and Annals of Medical Research Publishing Inc.


Aim: The unique shape and vascularization make capitellar fractures challenging to treat. In such cases, screw inclination is crucial to achieve stable fixation. In the present study, we aimed to evaluate the mechanical outcome of the different fixation angles formed by headless cannulated screws for treatment of type 1 capitellum fracture and compared interfragmentary displacement (IFD) using finite element analysis (FEA).
Material and Methods: In our study, three-dimensional finite element stress analysis was applied using the isotropic materials and static linear analysis. Stochastic screw inclination scenarios (Case 1, Case 2, Case 3, and Case 4) were generated, and perpendicular application of loads were simulated with magnitudes between 50 and 300 N on the elbow at angulations from 0º to 145º. The IFD in the four different screw inclination pairs were listed in the ANSYS general end processor. Relative IFD was calculated by measuring the total displacements in the X/Y/Z planes from 16 different points.
Results: According to the modeling, the magnitude of IFD was significantly different in terms of the force and the case factors under four altered forces. Analysis of displacement exhibited a significant difference in the force values of ‘100N/200N/300N’ and in the screw inclinations of Case 2 only. Although the interaction effect between the Force*Case was observed to be low, the most noticeable results were obtained from the “300N*Case 2.” pair compared to the others (p0.05).
Conclusion: Screws used for fracture fixation must maintain an anatomical correction, until it heals. Following a complex trauma such as a capitellar fracture, the elbow joint needs a stable fixation and early mobilization. Our FEA results suggest that the fixation via angled screws can achieve a more stable configuration than the paralleled ones.

Keywords: Finite element analysis; headless cannulated screws; interfragmentary displacement; Type 1 capitellum fracture


doi: 10.5455/annalsmedres.2020.06.555            


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Annals of Medical Research is the scientific official journal of the Inonu University Faculty of Medicine. It is published monthly. The essential aim of the Annals of Medical Research is to publish scientifically high quality clinical and experimental research articles on fields of medicine which can contribute to the literature data. In addition, review articles, case reports, editorials, letters to the editors and manuscripts on publication ethics and medical history, which can contribute to the education and practices of physicians and health sector professionals within the scope of the journal’s target audience and which can increase the level of scientific communication between the authors and readers, are included in the scope of the journal.


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