Suture anchor fixation strength with or without augmentation in osteopenic and severely osteoporotic bones in rotator cuff repair: a biomechanical study on polyurethane foam model

Journal of Orthopaedic Surgery and Research

Halil Atmaca⁴  Teyfik Demir³  Ozgur Verim¹  Mehmet Eroglu²  Levent Altinel⁴  Mehmet Serhan Er⁴ 

[1] Department of Mechanical Engineering, Faculty of Technology, Afyon Kocatepe University, Afyonkarahisar 03200, Turkey;Department of Orthopaedics and Traumatology, Faculty of Medicine, Afyon Kocatepe University, Afyonkarahisar 03200, Turkey;Department of Biomedical Engineering, TOBB University of Economics and Technology, Ankara 06520, Turkey;Department of Orthopaedics and Traumatology, Faculty of Medicine, Akdeniz University, Antalya 07985, Turkey

关键词: Bone;    Tricalcium phosphate cement;    Rotator cuff repair;    Osteoporosis;    Pullout;    Suture anchor;   

Others  :  1152188
DOI  :  10.1186/1749-799X-9-48

 received in 2013-12-26, accepted in 2014-06-09,  发布年份 2014

【 摘 要 】

Background

The purpose of the present study was to compare the results of various types of anchor applications with or without augmentation in both osteopenic and severely osteoporotic bone models.

Methods

Two different types of suture anchors were tested in severely osteoporotic (SOP) and osteopenic polyurethane (PU) foam blocks using an established protocol. An Instron machine applied static loading parallel to the axis of insertion until failure, and the mean anchor failure strengths were calculated. The mode of failure (anchor pullout, suture tear) was recorded. The anchors tested included the Corkscrew® (CS) (Arthrex Inc., Naples, FL, USA) (without augmentation, polymethylmethacrylate (PMMA)-augmented, and bioabsorbable tricalcium phosphate (TCP) cement-augmented) and Corkscrew® FT II (CS FT II) 5.5 mm (without augmentation as used routinely).

Results

The mean failure loads for both SOP and osteopenic PU foam blocks, respectively, were as follows: CS, 16.2 and 212.4 N; CS with TCP, 75.2 and 396 N; CS with PMMA, 101.2 and 528.8 N; CS FT II, 13.8 and 339.8 N.

Conclusions

Augmentation of CS with TCP or PMMA would be essential to SOP bones. In the osteopenic bone model, although anchor fixation augmented with PMMA is the best fixation method, CS augmented with TCP cement or CS FT II without any need for augmentation may also be used as an alternative.

【 授权许可】

   
2014 Er et al.; licensee BioMed Central Ltd.

【 图 表 】

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