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Can a phone app replace the Doctor's exam for ankle recovery?

NCT ID NCT07197593

Knowledge-focused Sponsor: Schulthess Klinik Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study checks if a smartphone app can reliably measure calf muscle strength in people recovering from Achilles tendon rupture or ankle sprain. Researchers will compare results from 70 participants (patients and healthy controls) using the app during calf raise exercises. The goal is to see if the app provides valid and consistent measurements that could help track recovery.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could provide a simple, reliable way for doctors to track recovery after ankle injuries using a smartphone app.
What could go wrong
This is an early observational study with only 70 participants, so results may not apply to everyone. The app's accuracy in real-world clinics is still unproven.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 70 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Oct 2025

An estimate. Start dates often move.

Expected to finish

May 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

General Inclusion Criteria: * Signed informed consent * Aged 18-65 years * German or English speaking Inclusion Criteria: LAS individuals: Unilateral LAS 4-16 weeks post-injury diagnosed by a physician as LAS, supination trauma, ankle distortion or ligamentous ankle injury. ATR individuals: Unilateral ATR 6- 24 months post-injury/surgery (surgical or conservative treatment). Healthy controls: Matched to Patients by Group Level: Physical Activity, Age and Gender. Exclusion Criteria: LAS individuals: Medial Ligament injuries (Grade II or III) ATR individuals: Previous ATR General Exclusion Criteria: * Chronic Ankle Instability (defined by symptoms such as giving way, perceived instability and at least one LAS within the last 6 months) * Previous ATR * Other lower limb injury and/or surgery in the last year (e.g. fractures, ligament reconstructions or other conditions resulting in ≥ 6 months of sports inactivity) * Impaired motor function of the lower limb due to neurovascular or neurological diseases * Vestibular or visual disturbances * Or any other pathoanatomic abnormality that would affect motor performance (e.g. foot arthrodesis, toe amputation/missing toes or other conditions such as joint deformities, severe chronic pain).

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Conditions

The condition(s) this trial relates to.

ankle injury

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Achilles tendon Ankle sprain

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

More trials for these conditions

Other studies related to the condition(s) this trial covers.