Clinical trial NCT02167399: Smart Phone as a Screening and Evaluation Tool to Identify Knee Valgus During Dynamic Activities
Official title: Evaluation of the Use of the Smart Phone as a Screening and Evaluation Tool to Identify Knee Valgus During Dynamic Activities.
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Leg Injuries
Lead sponsor: Nationwide Children's Hospital
Sponsor class: OTHER
First posted: 2014-06-19
Enrollment: 25
Sex: ALL
Minimum age (years): 13
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: CROSS_SECTIONAL
Sampling method: NON_PROBABILITY_SAMPLE
Study population: physical therapy clinic

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.


Eligibility criteria: Inclusion Criteria:

* Willingness to participate
* ability to perform a single leg squat, drop jump, and single leg drop without pain

Exclusion Criteria:

* lower extremity injury within 6 months prior to testing
* history of lower extremity surgery
* lower extremity weight bearing restrictions
* inability to follow directions
* neoprene/latex allergy
* Adhesive allergy
* Current neurological or developmental condition
* inability to attend follow-up session
* actively receiving Physical Therapy intervention for varus/valgus impairment
* Current pregnancy

Primary outcomes:
measure: Agreement in Dynamic lower extremity valgus angles during single leg squat
timeFrame: Baseline
Secondary outcomes:
measure: Agreement in Dynamic lower extremity valgus angles during drop jump
timeFrame: Baseline
Other outcomes:
measure: Agreement in Dynamic lower extremity valgus angles during single leg landing drop jump
timeFrame: Baseline
Locations:
city: Westerville
country: United States
facility: Nationwide Children's Hospital Sports and Ortho PT Westerville
state: Ohio
Study officials:
affiliation: Nationwide Children's Hospital
name: Mitchell C Selhorst, DPT
role: PRINCIPAL_INVESTIGATOR
References:
citation: Swenson DM, Collins CL, Fields SK, Comstock RD. Epidemiology of U.S. high school sports-related ligamentous ankle injuries, 2005/06-2010/11. Clin J Sport Med. 2013 May;23(3):190-6. doi: 10.1097/JSM.0b013e31827d21fe.
citation: Munro A, Herrington L, Carolan M. Reliability of 2-dimensional video assessment of frontal-plane dynamic knee valgus during common athletic screening tasks. J Sport Rehabil. 2012 Feb;21(1):7-11. doi: 10.1123/jsr.21.1.7. Epub 2011 Nov 15.