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

NCT05647616 | Completed

• 1 other identifier: Peroneus Longus and First Ray
• Study Type: interventional
• Target: 70
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

First Ray Dorsiflexion

Outcome Measures

Primary Outcomes (1)

• 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

Study Arms (2)

Strengthening exercises

EXPERIMENTAL

The participants in this group will be given instructions to follow a resistance exercises to strengthen the peroneus longs muscle.

Other: Strengthening exercises

Control

NO INTERVENTION

Participants in this group will be given no treatment.

Interventions

Strengthening exercises OTHER

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.

Strengthening exercises

Eligibility Criteria

• Age: 18 Years - 60 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Flexible dorsiflexed first ray.

You may not qualify if:

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

Sponsors & Collaborators

• University of Seville: lead

Study Sites (1)

Department of Podiatry

Seville, 41009, Spain

Location

Study Officials

• Pedro V Munuera-Martínez, Ph.D

  University of Seville

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: INVESTIGATOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Profesor Titular de Universidad

Study Record Dates

• First Submitted: December 2, 2022
• First Posted: December 12, 2022
• Study Start: February 1, 2023
• Primary Completion: January 31, 2026
• Study Completion: January 31, 2026
• Last Updated: April 29, 2026

Record last verified: 2026-04

Data Sharing

• IPD Sharing: Will not share

Locations

ES (1)