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Risk for rupture of the Achilles tendon, and other tendons increases with age. Such injuries of tissues that function in high load environments generally are believed to heal with variable outcome. However, in many cases, the healing does not lead to a good outcome and the patient cannot return to the previous level of participation in active living activities, including sports. In the past few years, using proteomic approaches and other biological techniques, reports have appeared that identify biomarkers that are prognostic of good outcomes from healing, and others that are destined for poor outcomes using validated criteria at 1-year post injury. This review will discuss some of these recent findings and their potential implications for improving outcomes following connective tissue injuries, as well as implications for how clinical research and clinical trials may be conducted in the future where the goal is to assess the impact of specific interventions on the healing process, as well as focusing the emphasis on regeneration and not just repair.
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http://dx.doi.org/10.3389/fbioe.2024.1357871 | DOI Listing |
ChemSusChem
September 2025
Stokes Laboratories, School of Engineering, Bernal Institute, University of Limerick, Limerick, V94 T9PX, Ireland.
The development of mechanically robust, biocompatible, and biodegradable hydrogels remains a significant challenge for biomedical applications involving load-bearing soft tissues. Herein, a tubular lignin-derived hydrogel is engineered to assess its physicochemical, mechanical, and biological properties. Kraft and organosolv lignin are systematically compared at varying crosslinker concentrations to determine their effect on pore morphology, swelling behavior, and mechanical performance.
View Article and Find Full Text PDFJ Orthop Sports Med
August 2025
Department of Translational Research, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, California, 91766, USA.
Rotator cuff tendinopathy is a common cause of shoulder pain and dysfunction, presenting in two primary forms: calcific and non-calcific. These subtypes differ significantly in their pathophysiology, clinical manifestations, and natural history, necessitating tailored diagnostic and therapeutic approaches. This review delineates the clinical presentations of calcific rotator cuff tendinopathy (RCCT), characterized by distinct pre-calcific, calcific, and post-calcific stages, and contrasts them with the more insidious, degenerative course of non-calcific rotator cuff tendinopathy.
View Article and Find Full Text PDFFront Physiol
August 2025
Laboratory of Muscle and Tendon Plasticity, Graduate Program in Rehabilitation Science, Faculdade de Ciências e Tecnologias em Saúde, Universidade de Brasília, Brasília, Brazil.
Introduction: There are limited studies on the long-term effects of COVID-19 on skeletal muscle morphology and architecture. Therefore, this study aims to address this gap by assessing the effects of prior COVID-19 infection on quadriceps muscle architecture and tendon-aponeurosis complex (TAC) properties over a one-year period, comparing three cohorts: individuals with moderate COVID-19, individuals with severe COVID-19, and a healthy control group.
Methods: Seventy participants were included in the study and allocated to three groups: moderate COVID-19 (n = 22), severe COVID-19 (n = 18), and control (n = 30).
JPRAS Open
June 2025
Department of Hand Surgery, Lausanne University Hospital and University of Lausanne, Avenue Pierre-Decker 5, 1011 Lausanne, Switzerland.
Reconstructing multi-tissue defects in the finger remains a significant challenge in hand surgery. We present the case of a 37-year-old man with segmental loss of bone, skin and extensor apparatus on the dorsal aspect of the index finger. A single stage reconstruction was successfully performed using a pedicled chimeric flap based on the second dorsal metacarpal artery combining skin paddle, second metacarpal base bone and the extensor indicis proprius.
View Article and Find Full Text PDFFront Bioeng Biotechnol
August 2025
The Third Department of Orthopedic Surgery, Fuxin Mining General Hospital of Liaoning Health Industry Group, Liaoning, China.
Tendon/ligament (T/L) injuries sustained during motion are highly prevalent and severely impact athletes' careers and quality of life. Current treatments, including autografts, allografts, and synthetic ligaments, have limitations such as donor site morbidity, immune rejection, and biomechanical mismatch, especially under dynamic loading conditions encountered in motion. 3D bioprinting offers a revolutionary approach for constructing patient-specific T/L grafts.
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