Foot Positions Affect Knee and Ankle Proprioception, Balance, Vertical Jump, and Muscle Activity in Individuals With Flexible and Rigid Flatfoot and Chronic Ankle Instability

Flatfoot Clinical Trial

Official title:

Foot Positions Affect Knee and Ankle Proprioception, Balance, Vertical Jump, and Muscle Activity in Individuals With Flexible and Rigid Flatfoot and Chronic Ankle Instability

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT05899855
• Other study ID #: Cairo university
• Status: Not yet recruiting
• Start date: July 1, 2023
• Est. completion date: October 30, 2023

Study information

• Verified date: June 2023
• Source: Beni-Suef University
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

To investigate the effect of various foot positions affect knee and ankle proprioception, balance, vertical jump, and muscle activity in individuals with flexible and rigid flatfoot and chronic ankle instability

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 60
• Est. completion date: October 30, 2023
• Est. primary completion date: October 30, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 24 Years

Eligibility

Inclusion Criteria:

• The inclusion criteria were the presence of FF and chronic ankle instability in the dominant foot. Flexible and rigid flat feet were initially diagnosed by an orthopedist using a weight-bearing position with a standardized radiograph technique. The digital X-ray detector (film) and the X-ray tube (source) are 35-40 inches apart in lateral views of the foot. Then, Jack's test was performed to differentiate between the flexible and rigid FF. Jack's test is a valid test in assessing FF 10. Finally, people with flexible a second degree FF (Meary's angle between 15° to 30°) 3 were included in this study. The degree of flatfoot was determined by measuring the talus-first metatarsal angle on a lateral weight-bearing radiograph. This angle lies between a line drawn from the centers of the longitudinal axes of the talus and the first metatarsal. An angle that is greater than 4° convex downward is considered pes planus with an angle of 15° - 30° considered moderate, and greater than 30° severe 8. Chronic ankle instability was defined as the subject had a minimum of 2 acute ankle sprains, in the last 6 months, associated with pain, swelling, and a record of various ankle giving way. The determination of the dominant foot followed Vauhnik. & ark, modified version which stated that the dominant foot should be used minimally in 2 of the 3 subsequent activities: (1) Using the leg to step over a spider toy, (2) Drawing a diamond figure on the ground and (3) Kicking a ball.

Exclusion Criteria:

• The exclusion criteria were the existence of limited hallux dorsiflexion because Jack's test is valid only if hallux dorsiflexion is available during relaxed standing. Also, the participants were excluded if they had previous hip, pelvis, knee, or foot surgeries within the last year; obesity or pregnancy; leg-length discrepancies; has any vestibular disorder neurological disorder, brain concussion within the last 3 months that may cause balance impairment; or administering any drugs that could disturb alertness or balance.

Related Conditions & MeSH terms

• Flatfoot

Intervention

Other:
• No intervention
No intervention

Locations

Country	Name	City	State
n/a

Sponsors (1)

Lead Sponsor	Collaborator
Beni-Suef University

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	knee proprioception	knee proprioception	2-3 months
Primary	ankle proprioception	ankle proprioception	2-3 months
Primary	Vertical jump measurements	Vertical jump measurements	2-3 months
Primary	Electromyographical activity (EMG)	Electromyographical activity (EMG)	2-3 months