Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (12): 66-72.doi: 10.13475/j.fzxb.20200204407

• Textile Engineering • Previous Articles     Next Articles

Abrasion resistance of suture at anchor eyelet for tendon-bone repair and its influencing factors

ZHANG Qian1,2, MAO Jifu1,2,3, LÜ Luyao1,2, XU Zhongmian4, WANG Lu1,2,3()   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China
    3. Key Laboratory of Biomedical Textile Materials and Technology in Textile Industry, Donghua University, Shanghai 201620, China
    4. Zhejiang Guangci Medical Equipment Co., Ltd., Ningbo, Zhejiang 315000, China
  • Received:2020-02-24 Revised:2020-07-17 Online:2020-12-15 Published:2020-12-23
  • Contact: WANG Lu E-mail:wanglu@dhu.edu.cn

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Abstract:

Suture anchors often fail in service due to the abrasion and fracture of suture at the interface between suture and anchor eyelet in clinic. However, the quantitative evaluation of the abrasion resistance of suture is still unascertained owing to the absence of an measurement technique. A abrasion testing device was constructed, and several commonly used sutures and anchors were selected for this experiment. The breaking force and abrasion resistance of the sutures were analyzed by altering the suture-pull angle (θSA) and the anchor rotation angle (θARA). The results show that the abrasion device could provide quantitative comparisons for different sutures. The monofilament structure of poly (p-dioxanone) suture demonstrates the highest breaking strength and exhibits superior abrasion resistance. The groove on the anchor eyelet surface results in inferior abrasion resistance, and the larger the groove size, the higher the abrasion resistance. The suture shows lower abrasion resistance at θSA=0° compared with that at θSA=45°. For the anchor without groove, the suture displayed higher abrasion resistance at θARA=90°. In contrast, for the anchor with groove, the suture showed higher abrasion resistance at θARA=0°.

Key words: surgical suture, anchor, abrasion testing device, abrasion resistance, medical textiles

CLC Number: 

  • TS101.2

Fig.1

Experimental materials morphology. (a) Three kinds of sutures; (b) Three anchors and morphology of anchor eyelet"

Fig.2

Suture abrasion resistance device"

Fig.3

Testing method of suture abrasion resistance. (a)Friction movement mode of suture; (b) Angle of suture and anchor"

Fig.4

Typical force-displacement curves of three types of sutures"

Fig.5

Broken-end morphology of three types of sutures after abrasion"

Tab.1

Effect of anchor eyelet and angle on breaking force of sutures"

实验参数/(°) 锚钉种类 断裂强力/N
θSA θARA
0 0 锚钉A 96.59±3.70
0 0 锚钉B 98.51±2.27
0 0 锚钉C 100.89±3.10
0 90 锚钉A 95.00±2.60
0 90 锚钉B 96.00±1.80
0 90 锚钉C 97.00±1.30
45 0 锚钉A 93.07±0.17
45 0 锚钉B 92.43±5.94
45 0 锚钉C 94.80±4.73
45 90 锚钉A 97.39±4.82
45 90 锚钉B 96.61±1.50
45 90 锚钉C 95.28±0.52

Tab.2

Effect of anchor eyelet and angle on abrasion resistance of sutures"

实验参数/(°) 锚钉种类 摩擦次数n
θSA θARA
0 0 锚钉A 2 213±221
0 0 锚钉B 2 006±102
0 0 锚钉C 1 476±23
0 90 锚钉A 2 726±208
0 90 锚钉B 526±78
0 90 锚钉C 389±51
45 0 锚钉A 1 101±203
45 0 锚钉B 1 011±59
45 0 锚钉C 902±52
45 90 锚钉A 1 336±373
45 90 锚钉B 469±23
45 90 锚钉C 96±7

Fig.6

Swing path of sutures during abrasion test. (a) Swing path of suture at different θSA; (b) Sewing path of suture at θARA=0°; (c) Sewing path of suture at θARA=90°"

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