Description of Return to Sport in Amateur Athletes Who Underwent Several Functional Tests (K-STARTS, Vertical Jumps and Soleus Muscle Strength) After Initial ACL Reconstruction

NCT07249645 | Not Yet Recruiting

• 1 other identifier: 2025-A01104-45
• Study Type: interventional
• Target: 230
• Locations: 0 countries
• Sites: N/A

Brief Summary

ACL injuries are incapacitating for both professional and amateur athletes, with long-term repercussions on performance and return to sport (RTS). Surgical reconstruction of the ACL is the main treatment option. Despite this, recurrence rates are high. Half of all recurrences occur within 8 months of reconstruction, and 70% within the first 6 months after RTS. Decision to RTS is therefore an important one, as returning too early can increase the risk of recurrence, while returning too late delays a return to pre-injury performance levels. As described by the Bern Consensus, RTS consists of three phases :

• Phase 1: Return to participation (RTp)
• Phase 2: Return to sport (RTS)
• Phase 3: Return to performance (RTP) RTS decision must be based on multiple factors, including psychological, athletic and functional components, as well as specific nature of the patient's activities. However, few individual tests have been associated with a specific level of RTS. Furthermore, the majority of studies rely on subjective and non-objective assessments to determine whether the athlete has returned to their pre-injury level. It would therefore be relevant to study the RTS time of patients who have performed a combination of several objective functional tests whose results could be complementary, in particular the K-STARTS, the CMJ, the DJ and the measurement of soleus muscle strength.

Conditions

ACL - Anterior Cruciate Ligament Rupture

Keywords

Return To Sport ACL injury

Outcome Measures

Primary Outcomes (1)

• Return to sport

  This is time period (in months) between surgery and: * The date of return to sport (phase 2) for patients who resumed sport * The end of follow-up (timepoint date/date of death/date of loss of contact) for patients who did not resume sport

  18 months

Study Arms (1)

K-STARTS +

EXPERIMENTAL

K-STARTS + arm involves following tests : K-STARTS, CMJ, DJ and soleus muscle strength measurement

Other: Physical tests

Interventions

Physical tests OTHER

K-STARTS, CMJ, DJ, and soleus muscle strength measurement

K-STARTS +

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64)

You may qualify if:

• Patient, male or female, aged between ≥ 18 and ≤ 30 years old
• Amateur athlete with a Tegner score ≥ 5
• Patient with primary ACL reconstruction dating back 6 months
• Patients with ACL damage in one knee only
• Patients who have undergone an isokinetic strength test with results that do not contraindicate functional testing
• Patients affiliated with or covered by a social security scheme
• French-speaking patients who have signed an informed consent form

You may not qualify if:

• Patients treated for bilateral ACL reconstruction
• Patients who are professional athletes or compete at a national level
• Patients with severe associated disorders (neurological, connective tissue, congenital diseases)
• Patients with multiple ligament defects or associated osteotomy
• Patients already included in another study
• Protected patients: adults under guardianship, curatorship or other legal protection, deprived of their liberty by judicial or administrative decision

Sponsors & Collaborators

• GCS Ramsay Santé pour l'Enseignement et la Recherche: lead

MeSH Terms

Conditions

Anterior Cruciate Ligament Injuries

Condition Hierarchy (Ancestors)

Knee Injuries; Leg Injuries; Wounds and Injuries

Central Study Contacts

Bertrand SONNERY-COTTET

CONTACT

+33437530022; sonnerycottet@aol.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 18, 2025
• First Posted: November 25, 2025
• Study Start: December 1, 2025
• Primary Completion (Estimated): April 30, 2028
• Study Completion (Estimated): April 30, 2028
• Last Updated: November 25, 2025

Record last verified: 2025-11

Data Sharing

• IPD Sharing: Will not share