Clinical Trial: Smart Phone as a Screening and Evaluation Tool to Identify Knee Valgus During Dynamic Activities

Study Status: Completed
Recruit Status: Completed
Study Type: Observational

Official Title: Evaluation of the Use of the Smart Phone as a Screening and Evaluation Tool to Identify Knee Valgus During Dynamic Activities.

Brief Summary: Evidence supports the use of two dimensional video analysis to assess the presence of dynamic knee valgus during generally used screening tasks, however there is limited evidence to support the use of the various smart phone applications as a time and money saving option for clinic use . Subjects that present to the clinic and display dynamic valgus at the knee during the lateral step down test will be given the option to participate in the study. If they consent to the study they will be evaluated with 2-Dimensional video analysis to determine the amount of valgus present at the knee during the lateral step down test. The subject will also have the smart phone attached to their lower leg and the amount of valgus will be concurrently measured by the selected application. The primary objective of this study is to determine the validity of an application on the smart phone to provide an objective measure of dynamic knee valgus. The secondary objective of this study is to determine the possibility of the use of the application as a source of feedback during neuromuscular re-education training in order to decrease or eliminate a subject's dynamic valgus collapse and subsequently decreased their risk for future injury.

Detailed Summary:
Sponsor: Mitchell Selhorst

Current Primary Outcome: Agreement in Dynamic lower extremity valgus angles during single leg squat [ Time Frame: Baseline ]

Patient's dynamic lower extremity valgus during single leg squat will be measured using both 2-D video analysis and smart phone inclinometer analysis. Measurements of 2-D and smart phone will be taken at the same time. Analysis will be repeated at 2nd visit to assess the reliability of the measurements


Original Primary Outcome: Same as current

Current Secondary Outcome: Agreement in Dynamic lower extremity valgus angles during drop jump [ Time Frame: Baseline ]

Patient's dynamic lower extremity valgus during a drop jump from a 12 inch step will be measured using both 2-D video analysis and smart phone inclinometer analysis. Measurements of 2-D and smart phone will be taken at the same time. Analysis will be repeated at 2nd visit to assess the reliability of the measurements


Original Secondary Outcome: Same as current

Information By: Nationwide Children's Hospital

Dates:
Date Received: June 10, 2014
Date Started: June 2014
Date Completion:
Last Updated: December 22, 2014
Last Verified: December 2014