Mechanical mechanism of suture passer needle break in rotator cuff repair.

Front Surg

Department of Rehabilitation Medicine, Huadong Hospital, Fudan University, Shanghai, China.

Published: December 2022

Introduction: Suture passer needle, as one of commonly used instrument in the arthroscopic rotator cuff repair, often breaks at the notch of the needle, which originally was designed to facilitate suture with thread. Our study aimed to evaluate the suture failure rate and stitch success rate between intact suture needle and broken needle and explore the mechanism of the needle breakage and achieving better future designs.

Materials And Methods: From 2017 to 2021, consecutive 437 shoulders (11 cases were bilateral) underwent arthroscopic repair for full-thickness rotator cuff tear at the authors' institution. The breakage of needles was recorded. Finite elements analysis and mechanical test were utilized to compare stress distribution, puncture performance, and loaded puncture performance between the broken needle and the intact needle.

Results: We identified 19 consecutive patients for whom the needle tip of the TruePass™ suture passer was broken in the 437 shoulder surgeries. Based on the finite element analysis of Abaqus, around the tip and the notch of the intact needle was a large stress concentration. The average puncture force required by intact needle tip and the broken tip is 61.78N and 78.23N respectively. While the intact tip with notch is easier to break than the broken tip.

Conclusions: The notch of the needle is a weak point in mechanics. The broken needle without the notch still has good tendon piercing and thread passing ability. The notch of needle may be not necessary, and the tip of the needle should be modified.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9806767PMC
http://dx.doi.org/10.3389/fsurg.2022.1065666DOI Listing

Publication Analysis

Top Keywords

needle
14
suture passer
12
rotator cuff
12
notch needle
12
broken needle
12
passer needle
8
cuff repair
8
needle broken
8
puncture performance
8
intact needle
8

Similar Publications

Purpose: To assess the efficacy and safety of PreserFlo MicroShunt (PMS) combined with mitomycin C in patients with medically treated primary open-angle glaucoma (POAG).

Study Design: A retrospective observational study.

Methods: The study examined 83 eyes from 83 patients with medically treated glaucoma surgery naive POAG.

View Article and Find Full Text PDF

Background: Ulcerative colitis patients who undergo ileal pouch-anal anastomosis (IPAA) without mucosectomy may develop inflammation of the rectal cuff (cuffitis). Treatment of cuffitis typically includes mesalamine suppositories or corticosteroids, but refractory cuffitis may necessitate advanced therapies or procedural interventions. This review aims to summarize the existing literature regarding treatments options for cuffitis.

View Article and Find Full Text PDF

Development of Electrospinning Setup for Vascular Tissue-Engineering Application with Thick-Hierarchical Fiber Alignment.

Tissue Eng Regen Med

January 2025

College of Materials Science and Engineering, Hunan University, Changsha, 410072, People's Republic of China.

Background: Tissue engineering holds promise for vascular repair and regeneration by mimicking the extracellular matrix of blood vessels. However, achieving a functional and thick vascular wall with aligned fiber architecture by electrospinning remains a significant challenge.

Methods: A novel electrospinning setup was developed that utilizes an auxiliary electrode and a spring.

View Article and Find Full Text PDF

Morphea is a chronic inflammatory fibrosing disorder. Since fibrosis is the hallmark of both scars and morphea, our attention was raised for the possible use of Fractional Ablative CO lasers and microneedling as treatment modalities for morphea. To compare the efficacy and safety of Fractional Ablative CO lasers and microneedling in the treatment of morphea.

View Article and Find Full Text PDF

A Simple and Innovative Simulator Model for Sialendoscopy Basket Stone Retrieval Training.

Laryngoscope

January 2025

Department of Otorhinolaryngology-Head & Neck Surgery, Faculty of Medicine, Suez University, Suez, Egypt.

We present a simple and innovative sialendoscopy basket stone retrieval (BSR) simulator model composed mainly of a 1.0-mL insulin syringe with detachable needle whose lumen mimics a dilated salivary duct. Dried Guava seeds are used to imitate small-sized floating sialoliths.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!