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Lateral Ankle Treatment

Prevention of the Os Fibulare After an Acute Lateral Ankle Avulsion Fracture in Pediatric Patients: A Randomized Control Trial

Who can join

Ages 5 to 12 · All sexes

Inclusion Criteria:

* Ages 5-12 at time of enrollment
* Diagnosis of first-time lateral ankle injury and an avulsion fracture visible on imaging who can be enrolled within 14 days of injury
* Patient and parent/legal guardian must speak English or Spanish

Exclusion Criteria:

* Previous ipsilateral ankle surgery
* Pre-existing musculoskeletal disease
* If patient has been casted prior to confirmation of avulsion fracture on imaging
* Developmental delay
* Does not meet inclusion criteria

About the study

This is a randomized control trial of pediatric patients with acute lateral ankle avulsion fractures. Patients will be randomized into two groups: Standard of care treatment which includes booting with early range of motion and gradual weening from the boot and a Test treatment which includes a 6 week short-let cast. The purpose of the study is to test whether prolonged immobilization (casting) can help prevent the formation of a subfibular ossicle. The study consists of two patient visits.

What is being tested

• Prolonged Immobilization (Casting) (procedure)
• Standard of Care (SOC) (procedure)

Sponsor: Texas Scottish Rite Hospital for Children · Participants: 50 · Started: Jun 8, 2026

Contact the study team

• Anna Wilhelmy, MS · Phone: 469-857-21109
• Robert Van Pelt, MPH · Phone: 214-559-7456

Official record on ClinicalTrials.gov — NCT07751068

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.