Lower Extremity Alignment and Dynamic Control With Associated Injury Risk in College Athletes With Knee Hyperextension

NCT03425968 | Completed

• 1 other identifier: YM106052E
• Study Type: observational
• Target: 64
• Locations: 1 country
• Sites: 1

Brief Summary

Knee hyperextension, also called genu recurvatum or back knee, is commonly seen in women, people with ligamentous laxity, stroke and cerebral palsy patients. This faulty posture would result in excessive tension of the passive tissues such as anterior cruciate ligament (ACL) and posterior capsule of the knee. Subjects may also develop compensations at hip and ankle joint, as well as lower extremity malalignment. Muscles surrounding the knee could also become dysfunctional when performing functional tasks requiring stability during terminal knee extension, during which uncontrolled knee hyperextension could easily be utilized to lock the joint for stability in gait and stair climbing. In athletes, landing from a jump on an extended knee is one of the common reasons resulting in ACL injury. Little is known about the injury rate of athletes with knee hyperextension who participate in sports involving jump-landing activities. The aim of the study is to explore if knee hyperextension is associated with poor lower extremity alignment and dynamic control and injury rate in athletes requiring jump-landing activities. One of the study hypothesis is that athlete with knee hyperextension can find more compensatory lower extremity alignments and poor control in dynamic movement than control group. The other hypothesis is with or without knee hyperextension, the parameter of lower extremity alignment and dynamic control can predict injury rate in jump landing athlete.

Conditions

Knee Hyperextension

Keywords

Injury rate

Outcome Measures

Primary Outcomes (2)

• Injury type

  Record injury type

  4 months

• Injury duration

  time loss during the game or training (days)

  4 months

Secondary Outcomes (18)

• Lower extremity alignments-pelvic tilt on sagittal plane

  1st day

• Lower extremity alignments-hip anteversion

  1st day

• Lower extremity alignments-tibiofemoral angle

  1st day

• Lower extremity alignments-knee hyperextension angle

  1st day

• Lower extremity alignments-tibial rotation angle

  1st day

Study Arms (2)

Knee hyperextension group

athletes who has knee hyperextension

Control group

athletes who doesn't have knee hyperextension

Eligibility Criteria

• Age: 20 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

college athletes in Yang-Ming University and University of Taipei

You may qualify if:

• age ≥ 20 years old
• knee hyperextension ≥ 5⁰
• participate in jump- landing sports
• training at least 3 days per week
• no lower extremity injury last 3 months

You may not qualify if:

• having knee surgery before
• In the past three months have occurred lower extremity musculoskeletal injury leading the person can't participate in training or competition for at least three days

Sponsors & Collaborators

• National Yang Ming Chiao Tung University: lead

Study Sites (1)

National Yng Ming University

Taipei, 北投區, 112, Taiwan

Location

Study Officials

• Wen-Yin Chen, PhD

  National Yang-Ming University The Department of Physical Therapy and Assistive Technology

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: January 26, 2018
• First Posted: February 8, 2018
• Study Start: February 27, 2018
• Primary Completion: August 30, 2018
• Study Completion: December 31, 2018
• Last Updated: April 10, 2019

Record last verified: 2019-04

Locations

TW (1)