Evidence map›Paper›PMID 42329519›Full record

ArticleAnnals of biomedical engineering2026

A Multimodal Measurement System for Quantifying Time-Dependent Suture Tension Relaxation and Wound Closure Strength.

Shuaiyi Li, Yiping Liu, Bao Yang, Zetong Zhu, Licheng Zhou, Zhenyu Jiang, Zejia Liu, Liqun Tang, Xiulan Zou

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Article in Annals of biomedical engineering, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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9 authors.

Shuaiyi LiSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Yiping LiuSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Bao YangSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China. byang20210415@scut.edu.cn.ORCID http://orcid.org/0000-0003-3638-0212
Zetong ZhuSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Licheng ZhouSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Zhenyu JiangSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Zejia LiuSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Liqun TangSchool of Civil Engineering and Transportation, South China University of Technology, Guangzhou, China.
Xiulan ZouGeneral Hospital of Southern Theater Command of the People's Liberation Army of China, Guangzhou, China.

Funding

National Natural Science Foundation of China Nos.12372181National Natural Science Foundation of China Nos.12432008National Natural Science Foundation of China Nos.12472179National Natural Science Foundation of China Nos.12472180National Natural Science Foundation of China Nos.12522208Natural Science Foundation of Guangdong Province Nos.2023A1515012942Natural Science Foundation of Guangdong Province Nos.2024A1515011076Natural Science Foundation of Guangdong Province Nos.2025A1515011999
6 · The paper itself

Abstract

purposePostoperative wound stability in microsurgical suturing depends on time-dependent deformation of sutures and tissues. This study develops a multimodal suturing mechanics measurement system (MSMMS) to evaluate real-time suture tension and wound closure strength, defined as the extra stress needed to initiate wound reopening.

methodsThe MSMMS integrates micro-force suture tension sensing, global load and displacement measurement, and full-field digital image correlation (DIC). Sutured silicone specimens with pre-cut wounds were used as controlled surrogates. Stress relaxation was tested under uniaxial and sutured conditions, and relaxation parameters were extracted using a dual Maxwell model. Synchronized mechanical and DIC data identified crack initiation and wound closure strength.

resultsThe MSMMS captured two-phase relaxation in both sutures and silicone. Under the same initial stress, the sutured configuration produced about 20% greater suture relaxation than uniaxial loading. Wound closure strength showed a non-monotonic dependence on relaxation time: it decreased by 5-10% after short relaxation and partially recovered at longer times. Increasing the initial suture tension from 0.3 to 0.5 N increased wound closure strength by less than 5%.

conclusionUnlike conventional force-only or endpoint tests, the MSMMS enables synchronized characterization of suture tension, global loading, and wound closure strength. This framework provides a quantitative basis for optimizing surgical tension and evaluating smart suturing devices. The characterization of relaxation time constants may also help identify the optimal postoperative time window for suture adjustment.

Indexed as

Digital image correlationMultimodal mechanical testingSuture tension relaxationWound closure strength

Identifiers

PMID42329519

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