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.
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http://dx.doi.org/10.3389/fsurg.2022.1065666 | DOI Listing |
Jpn J Ophthalmol
January 2025
Department of Ophthalmology, Graduate of Medicine, Faculty of Medicine, The University of Tokyo, Tokyo, Japan.
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.
Dig Dis Sci
January 2025
Department of Gastroenterology, Hepatology, and Nutrition, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH, 44195, USA.
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 PDFTissue 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.
Arch Dermatol Res
January 2025
Dermatology and Venereology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt.
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 PDFLaryngoscope
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.
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