student profile: Mr Lionel Chia


Thesis work

Thesis title: Identifying athletes at risk of anterior cruciate ligament injury due to poor trunk control

Supervisors: Justin SULLIVAN , Evangelos PAPPAS , Marnee MCKAY

Thesis abstract:

Although exercise-based knee injury prevention programs (IPPs) have been found to be effective in preventing anterior cruciate ligament (ACL) injuries, adherence remains low. One way to improve uptake is through the individualization of IPP to specifically target populations with higher neuromuscular risk profiles. With individualization, sport coaches and administrators may be more inclined and committed to institute IPPs because it more efficiently and effectively targets specific deficits. One such neuromuscular risk factor that can be targeted is trunk dominance – the inability to precisely control the trunk in space. It may result in compromised dynamic stability of the lower limb, eventually predisposing the knee to increasing knee abduction moments and risk of ACL injuries. However, the assessment of trunk dominance remains predominantly lab-based, and bound by cost, time, and logistical constraints especially in clinical settings. Alternate clinical options have surfaced, but not much is known about the collective reliability and validity of these measures, and how they compare to one another. To answer these questions, the first study in this project would seek to systematically review the evidence to determine whether athletic individuals with increased trunk dominance are at a higher risk for sustaining lower extremity injuries. The 2nd study of this project would then compare and evaluate the clinical tests identified as part of the 1st study, against lab-based 3D movement analyses. The goal is to identify a test, or combination of clinical tests, that can distinguish populations with higher neuromuscular risk profiles as per the trunk dominance theory.

Note: This profile is for a student at the University of Sydney. Views presented here are not necessarily those of the University.