Failure rate after chronic rotator cuff repair is considerably high. Moreover, diabetes mellitus is known as a compromising factor of rotator cuff tear. The effect of Polydeoxyribonucleotide (PDRN) and polynucleotide (PN) on tendon healing and fatty infiltration is unclear as tissue regeneration activator in diabetic state. Therefore, a diabetic rat model with chronic rotator cuff tear was made for mechanical, histologic and blood tests. In the animal study using a diabetic rat cuff repair model, the administration of PDRN and PN increased the load to failure of repaired cuffs and improved tendon healing and decreased fatty infiltration. Also, the plasma levels of vascular endothelial growth factor and fibroblast growth factor were elevated in PDRN and PN administrated groups. We concluded that PDRN and PN appear to boost tendon recovery and reduce the presence of fatty infiltration following cuff repair in diabetic state. Also, PN showed a later onset and a longer duration than PDRN associated with the mean plasma growth factors.
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http://dx.doi.org/10.1038/s41598-024-71206-8 | DOI Listing |
Regen Ther
March 2025
Department of Orthopaedics, Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350001, China.
Muscle degeneration is a common issue caused by rotator cuff tear (RCT) which significantly affects prognosis. Muscle stem cells (MuSCs) play a crucial role to prevent muscle degeneration after RCT. However, the pathological changes and detailed molecular mechanism underlying the myogenesis of MuSCs after RCT remain incomplete.
View Article and Find Full Text PDFCureus
December 2024
Trauma and Orthopaedics, Northampton General Hospital, Northampton, GBR.
Although mixing and matching components is a common, safe, and well-documented practice in hip revision surgery, our extensive search indicates that it has not been previously reported for shoulder arthroplasty. This case report presents the use of mixed implants in shoulder revision surgery to reduce morbidity and address flaws in the initial implant design. We describe a case of a patient with multiple epiphyseal dysplasia who was treated for osteoarthritis in his left shoulder with an anatomic shoulder replacement in 2014.
View Article and Find Full Text PDFThe acromioclavicular (AC) joint, an essential element in the complex biomechanics of the shoulder, displays a diverse range of anatomical variations among individuals. This review aimed to study and present these variations. A detailed search was conducted on the PubMed medical database by using the terms "acromioclavicular joint variations".
View Article and Find Full Text PDFJ Clin Orthop Trauma
January 2025
Fundación Santa Fe de Bogotá, Bogotá, Colombia, Calle 119 #7-75.
The rotator cuff, a vital group of tendons and muscles in the shoulder, is essential for stabilizing the joint and enabling a wide range of arm movements. Rotator cuff tears, common across all age groups, often cause significant pain and functional limitations. Rotator cuff repair surgery aims to alleviate pain, restore function, and improve quality of life.
View Article and Find Full Text PDFAm J Sports Med
January 2025
Department of Orthopaedic Surgery, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, South Korea.
Background: Studies are still limited on the isolated effect of retear after arthroscopic rotator cuff repair (ARCR) on functional outcomes after the midterm period.
Purpose: To assess the effect of retear at midterm follow-up after ARCR and to identify factors associated with the need for revision surgery.
Study Design: Cohort study; Level of evidence, 3.
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