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Comput Intell Neurosci 2022 2;2022:1987345. Epub 2022 Aug 2.

Department of Medical Genetics, First People's Hospital of Yunnan Province (The Affiliated Hospital of Kunming University of Science and Technology), Kunming 650032, Yunnan, China.

Based on the Hill muscle model (HMM), a biomechanical model of human hip muscle tendon assisted by elastic external tendon (EET) was preliminarily established to investigate and analyze the biomechanical transition between the hip joint (HJ) and related muscle tendons. Using the HMM, the optimal muscle fiber length and muscle force scaling variables were introduced by means of constrained optimization problems and were optimized. The optimized HMM was constructed with human parameters of 170 cm and 70 kg. Read More

J Shoulder Elbow Surg 2022 Aug 2. Epub 2022 Aug 2.

Department of Orthopaedics and Sports Medicine, University of Washington; the Orthopedics Section S-112-ORT, VA Puget Sound Health Care System, 1959 NE Pacific Street, Box 356500, Seattle, WA 98195, USA. Electronic address:

Repetitive stress injuries to the human shoulder rotator cuff, and particularly the supraspinatus tendon (SST), are highly prevalent and debilitating. These injuries typically occur through application of cyclic load below the threshold necessary to cause acute tears, leading to accumulation of incremental damage that exceeds the body's ability to heal, resulting in decreased mechanical strength and increased risk of frank rupture at lower loads. Consistent progression of fatigue damage across multiple model systems suggests a generalized tendon response to overuse. Read More

Connect Tissue Res 2022 Jul 28:1-13. Epub 2022 Jul 28.

Department of Orthopaedics & Rehabilitation, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA.

Aging is a complex and progressive process where the tissues of the body demonstrate a decreased ability to maintain homeostasis. During aging, there are substantial cellular and molecular changes, with a subsequent increase in susceptibility to pathological degeneration of normal tissue function. In tendon, aging results in well characterized alterations in extracellular matrix (ECM) structure and composition. Read More

Scand J Med Sci Sports 2022 Jul 17. Epub 2022 Jul 17.

Sport and Exercise Science, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, Victoria, Australia.

Combined heavy- and light-load ballistic training is often employed in high-performance sport to improve athletic performance and is accompanied by adaptations in muscle architecture. However, little is known about how training affects muscle-tendon unit (MTU) kinematics during the execution of a sport-specific skill (e.g. Read More

Comput Methods Programs Biomed 2022 Sep 3;224:106994. Epub 2022 Jul 3.

Centre for Biomedical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India; Department of Biomedical Engineering, All India Institute of Medical Sciences, New Delhi, 110029, India. Electronic address:

Background: The ankle and foot are among the most critical load-bearing joints in the human anatomy. Anatomically accurate human body models are imperative to understanding the mechanics of injury and musculoskeletal disorders. A typical human ankle-foot anatomy consists of 25 DOFs, 112 dense connective tissues (DCTs) (92 ligaments, one capsule and 19 fasciae), 30 tendons, and 65 muscles. Read More