Strengthening of the Peroneus Longus Muscle in Patients With Dorsiflexed First Ray

BACKGROUND: The first metatarsal and medial cuneiform form an important functional unit in the foot called "first ray". The first ray normal function requires that it load part of the body weight in the last period of the stance phase of gait. A dorsiflexed first ray may exist due to abnormal function of the peroneus longus muscle.

OBJECTIVE: To evaluate the improvement in first ray function in tha push-off phase of gait after a 4-week strengthening programme for the peroneus longus.

SUBJECTS: Patients with flexible dorsiflexed first ray. INTERVENTIONS: Patients will be randomly assigned to either group A, which will receive instructions for a strengthening programme of the peroneus longus muscle, or group B, which will receive no treatment.

MAIN MEASURES: The primary outcomes will be mean and maximum plantar pressure under the first metatarsal head.

Study Overview

• Status: Recruiting
• Conditions: First Ray Dorsiflexion
• Intervention / Treatment: Other: Strengthening exercises

• Study Type: Interventional
• Enrollment (Estimated): 70
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Pedro V Munuera-Martínez, Ph.D; Phone Number: 696437996; Email: pmunuera@us.es

Study Locations

• Spain
  • Seville, Spain, 41009
    • Recruiting
    • Department of Podiatry
    • Contact: Pedro V Munuera-Martínez, Ph.D

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Flexible dorsiflexed first ray.

Exclusion Criteria:

• Traumatisms on the feet in the last 12 months.
• Previous foot surgery.
• Hallux abducto-valgus.
• Being in treatment with foot orthoses.
• Systemic musculoskeletal disease.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Strengthening exercises; The participants in this group will be given instructions to follow a resistance exercises to strengthen the peroneus longs muscle.	Other: Strengthening exercises; Participants in group A will be required to complete 12 sessions in 4 to 6 weeks. Resistance-Bands will be used to do ankle plantar flexion and eversion (3 sets of 10 repetitions). Participants will have to be seated on the floor with the knee extended and instructed to perform the movement at the ankle joint without allowing extraneous movement at hip and knee. The resistance band will be doubled and securely attached to the base of a table. The training resistance will be determined by calculating 70% of the resting length of the resistance band and adding this distance to the resting length of the resistance band. Using this calculated distance, the examiner will place a mark to which the resistance band will be stretched during exercise performance on the floor. Each week a study investigator will track each participant's completion. Participants will be instructed to move through their entire range of motion for the direction of each exercise.
No Intervention: Control; Participants in this group will be given no treatment.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Maximum plantar pressure under the first metatarsal head	The maximum plantar pressure detected by a pressure plate with capacitive sensors under the first metatarsal head load area.	Four weeks

Collaborators and Investigators

• Sponsor: University of Seville
• Investigators: Study Director: Pedro V Munuera-Martínez, Ph.D, University of Seville

Study record dates

Study Major Dates

• Study Start (Actual): February 1, 2023
• Primary Completion (Estimated): January 1, 2027
• Study Completion (Estimated): December 31, 2028

Study Registration Dates

• First Submitted: December 2, 2022
• First Submitted That Met QC Criteria: December 2, 2022
• First Posted (Actual): December 12, 2022

Study Record Updates

• Last Update Posted (Actual): May 8, 2024
• Last Update Submitted That Met QC Criteria: May 7, 2024
• Last Verified: May 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: Peroneus Longus and First Ray

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No