When developing multimedia as an educational tool formative and summative evaluations should be applied during this process. Among other aspects, these evaluations can pertain to the extent and way of use, the learning contents and their formal presentation, the learning results, the acceptability and the usability of the multimedia tool. Furthermore effectivity and efficiency of the multimedia...

Foreword Bridging motor control and biomechanics One can assume that motor control and biomechanics are united by a common goal to understand the basic mechanisms of the coordinated movements. Relationships between motor control and biomechanics are natural and the interdisciplinary research on that field has a long tradition in Poland. The origin can be delineated by the seminar entitled Schoo...

BACKGROUND Though rehabilitation attempts to correct "stiff knee gait" and control for dynamic limb valgus after anterior cruciate ligament reconstruction (ACLR), impaired biomechanics often persist when an individual is cleared to return to sport (RTS). Reduced knee extension moments (KEMs) and knee flexion angles (KFAs) often continue. While at the hip, increased hip adduction angles (HADDAs)...

BACKGROUND The incidence of anterior cruciate ligament injuries among dancers is much lower than that among team sport athletes and no clear gender disparity has been reported in the dance population. Although numerous studies have observed differences in lower extremity landing biomechanics between male and female athletes, there is currently little research examining the landing biomechanics ...

Elbow injuries are common in sports that involve throwing, overhead activity, and upper extremity weight-bearing, including baseball, volleyball, football, javelin throwing, and gymnastics. Although acute injuries of the elbow are somewhat common in pediatric patients, overuse injuries in youth athletes are very prevalent. Elbow pain in baseball players aged 9 to 12 years has been found to rang...

Concussions are a frequent occurrence in athletic endeavors, its rate exceeding that occurring in the general population by 50 fold. The biomechanics and pathophysiology of concussion are still not well understood and may lead to potential significant sequelae from single or more commonly multiple concussions. Postconcussive symptoms, the second impact syndrome and the cumulative effects of con...

The sport of rowing has gained considerable momentum in recent years. It appeals to many age groups and is an endurance activity with no sudden accelerations or ballistic impact forces. It is associated with several injuries that are so typical that they are easily recognized by the enthusiast and in many cases do not require imaging. These include wrist tenosynovitis, intersection syndrome, an...

Shoulder impingement is a progressive orthopedic condition that occurs as a result of altered biomechanics and/or structural abnormalities. An effective nonoperative treatment for impingement syndrome is aimed at addressing the underlying causative factor or factors that are identified after a complete and thorough evaluation. The clinician devises an effective rehabilitation program to regain ...

Mobile-bearing kinematics in PCL-retaining total knee arthroplasty. A study of 51 cases Julien Chouteau1,2,3, Jean-Luc Lerat1, Rodlph Testa1, Bernard Moyen1,2, Michel-Henry Fessy1, Scott A. Banks3 1Department of Orthopaedics, trauma and sport medicine, Lyon-Sud Hospital, Pierre-Bénite, France; 2Université Lyon 1, F-69003 ; Institut National de Recherche sur les Transports et leur Sécurité, Bron...

Although deterministic models may provide a useful starting point for sports biomechanists examining the mechanical aspects of athletic performance, they have inherent weaknesses that limit their proctical application. Specifically, their inability to provide substantive information about coordinative movement patterns or 'technique' suggests that sports biomechanists must explore alternative p...