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.
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 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
Single group
Physical tests
Other interventionK-STARTS, CMJ, DJ, and soleus muscle strength measurement
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
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