Patellar tendon ruptures are rare but potentially devastating injuries. Acute repair after patellar tendon rupture affords the best opportunity for tension-free restoration of the extensor mechanism. Biological augmentation of primary repair is believed to decrease strain across the repair site and reduce the risk of rerupture. We present a technique for primary patellar tendon repair with bidi...

Interposition of the flexor hallucis longus tendon through the subtalar joint was identified intraoperatively during a triple arthrodesis for a symptomatic adult clubfoot in a patient who had a posteromedial release as a child. The mechanism for this occurrence is unknown, although it is likely that the flexor hallucis longus tendon deviated into the subtalar joint during the early postoperativ...

Closed rupture of the FDP tendon is rare. However, whenever they occur the most common site of rupture is the tendon-bone insertion, less frequent site is at the musculo-tendinous junction. Midsubstance ruptures are even more unique and are usually due to underlying pathology such as fracture, cystic degeneration, rheumatoid arthritis, or sequel following local steroid injection. This report de...

The moment arm (MA) of the knee extensor mechanism has been reported by a number of researchers, although it has been defined and measured differently in these studies. The aims of this study were: (1) to quantify the MA of the knee-extensor mechanism, which is represented by the MA of the patellar tendon at the knee; and (2) to show that the MA of the patellar tendon is related to the size of ...

An important function of skeletal muscle is deceleration via active muscle fascicle lengthening, which dissipates movement energy. The mechanical interplay between muscle contraction and tendon elasticity is critical when muscles produce energy. However, the role of tendon elasticity during muscular energy dissipation remains unknown. We tested the hypothesis that tendon elasticity functions as...

Introduction Degeneration and tearing of rotator cuff tendon causes significant morbidity in our ageing population. While conservative treatment is favored, there are no current drug therapies to specifically treat cuff or other tendon injuries so surgical repairs are common (over 14,000 annually in Australia). Unfortunately half of these repairs fail within 12 months. The poor management optio...

OBJECTIVE Degenerative disorders of tendons present an enormous clinical challenge. They are extremely common, prone to recur and existing medical and surgical treatments are generally unsatisfactory. Recently eccentric, but not concentric, exercises have been shown to be highly effective in managing tendinopathy of the Achilles (and other) tendons. The mechanism for the efficacy of these exerc...

Objective. Degenerative disorders of tendons present an enormous clinical challenge. They are extremely common, prone to recur and existing medical and surgical treatments are generally unsatisfactory. Recently eccentric, but not concentric, exercises have been shown to be highly effective in managing tendinopathy of the Achilles (and other) tendons. The mechanism for the efficacy of these exer...

In this study, we proposed an origami pump actuator based pneumatic quadruped robot (OPARO). The was constructed with a four-leg system controlled by only two motors. Specifically, the forelegs and hindlegs are pneumatically coupled to operate simultaneously tendon-driven system. performs pumping actuating supply air hindlegs, passively actuated from forelegs. We conducted series of experiments...