Ankle sprains are among the most common injuries sustained by physically active individuals. Although ankle sprains are often considered innocuous in nature, a large percentage of individuals experience repetitive sprains, residual symptoms, and recurrent ankle instability following a single acute sprain; otherwise known as chronic ankle instability (CAI). In addition to repetitive ankle trauma, those with CAI experience reductions in functional capacity over the life span. This indicates that current intervention strategies for CAI are inadequate and require further investigation. The objective of this dissertation was to explore differences in walking and running gait parameters between individuals with and without CAI; as well as, examine the effects of a 2-week Maitland Grade III anterior-to-posterior talocrural joint mobilization intervention on self-reported function, ankle mechanics, postural control, and walking and running gait parameters in a cohort of individuals with CAI. It was hypothesized that individuals with CAI would exhibit different gait kinematics and joint coupling variability patterns compared to healthy individuals and the joint mobilization intervention would improve patient-oriented, clinician-oriented, and laboratory-oriented measures of function in those with CAI. Several observations were made from the results. In the first study, alterations in single joint kinematics and joint coupling variability were found between those with CAI and healthy individuals. In the second study, it was determined that the joint mobilization intervention improved patient-oriented and clinician-oriented measures of function as indicated by improved Foot and Ankle Ability Measure scores, increased weight-bearing dorsiflexion range of motion, and increased reach distances on the Star Excursion Balance Test. However, there were no changes in measures of instrumented ankle arthrometry or laboratory measures of postural control. In the third study, there were no changes in single joint kinematics or joint coupling variability during walking and running associated with the joint mobilization intervention. It can be concluded that joint mobilizations had a significant positive impact on patient-, and clinician-oriented measures of function. Though the laboratory measures did not detect any improvements, joint mobilizations did not produce deleterious effects on function. Therefore, future investigation on the effects of joint mobilization in conjunction with other, more active, rehabilitation strategies is warranted.

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Recorded by Eugene Barsky, Physiotherapy Outreach Librarian, UBC / This is a Systematic Review Presentation titled - "Effect of Manual Therapy on ROM Following Lateral Ankle Sprains: A Systematic Review", created by Master of Physical Therapy Graduating Students, University of British Columbia - 2006, Presented on September 14-15, 2006 , Vancouver, BC, Canada

Thesis (Ph. D.)--Hong Kong Polytechnic University, 2003. / Includes bibliographical references (leaves 199-216). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.

Thesis (Ph. D.)--Hong Kong Polytechnic University, 2003. / Includes bibliographical references (leaves 199-216).

Sport-related injuries (SRI) can be foreseen and averted when mechanisms and risk factors are completely understood. An appreciation of the relationship between sport-related concussion (SRC) and lower extremity musculoskeletal injuries (LEMI) is emerging amid professional and collegiate athletes. However, findings of such a relationship in adults may not be generalizable to younger populations, and the literature has not addressed this relationship in adolescents. The purpose of this cross-sectional quantitative study was to examine the relationship between SRC and LEMI in high school athletes. The dynamic model of etiology in sport injury provided the study's conceptual framework. A de-identified secondary dataset of high school athletic injuries was obtained from the Athletic Training Practice Based Rehab Network and analyzed with descriptive and inferential statistics. Concussions, knee sprains, and ankle sprains represented about 12%, 17%, and 70%, respectively, of the 1,613 cases in the dataset. Chi-square tests revealed that SRCs, and the number of SRCs, were associated with knee sprains [(p < .001), Cramer's V = .148] and ankle sprains [(p < .001), Cramer's V = .545]. This study may promote positive social change by prompting further retrospective and prospective studies to clarify whether a relationship exists between SRC and LEMI in high school athletes, and if so, whether this relationship is causal in nature. New knowledge may be used to guide practices and policies to reduce sports injuries in high school athletes, which may lead to fewer SRIs among adolescents, fewer school absences, more physical activity, and better health and well-being throughout the lifespan, thereby promoting a more active, productive, and healthy society.

The ankle sprain is a common injury in basketball. A mechanism for this injury occurs when landing improperly from a jump. The concept of wedge and flare designs in shoes is (1) to offer benefit in reducing the potential for an ankle sprain while (2) not hindering performance or usability concerning basketball movements that are needed for successful play. The purpose was to take conceptual designs of the wedge and flare through an iterative design process. Therefore, the objectives were to fabricate shoe prototypes with these conceptual designs, to test the performance of these prototypes, and to develop the next iteration of design based upon the results of testing. The results of this design process are discussed.