Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Anterior cruciate ligament (ACL) tear is a frequent and devastating injury in sport, especially in pivoting-contact disciplines. In many cases, athletes will undergo an ACL reconstruction (ACL-R) for recovering knee stability, preventing further injuries and returning to sport (RTS). Among the criteria for RTS, knee muscle strength is the most used objective criteria and especially the symmetry of knee flexors and/or extensors between the operated and uninjured knee.
Isokinetic testing of knee muscle strength is considered as a reference for knee muscle testing during the follow up stages after ACL-R. This evaluation allows to measure the strength (torque) of knee flexors and extensors at several angular velocities. However, there is no relevant litterature about the force-velocity (Fo-v) relationship of knee flexors and extensors after ACL-R.
The present study aimed to evaluate and test the differences between the Fo-v relationship parameters between the operated and uninjured knees at 4 months and 8 months after ACL-R, using the 2-points method with isokinetic testing. Also, the investigators aimed to test the impact of the type of surgery (patellar tendon autograft vs. hamstring tendon autograft) on the Fo-v relationship after ACL-R
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| ACL group | The patients were referred to the sport medicine department for the post ACL-R follow-up including isokinetic knee muscle strength evaluations at 4 months and 8 months after the surgery |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Follow-up after Anterior cruciate ligament reconstruction | Other | The patients were referred to the sport medicine department for the post ACL-R follow-up including isokinetic knee muscle strength evaluations at 4 months and 8.months after the surgery |
| Measure | Description | Time Frame |
|---|---|---|
| Change in strength | Measurement of knee extensors and flexors peak strength (in newton.meter, Nm) on isokinetic dynamometer at two angular velocities of 60°/s and 240°/s respectively | Time Frame: ACL group: Two evaluations on both injured and healthy knees: (1) 4 months after surgery and (2) 8 months after surgery; Routine practice following guidelines |
| Change in the force-velocity relationship | Calculation of the corresponding slope and maximal force (Y-intercept) of the regression line of the force-velocity curve | Time Frame: ACL group: Two evaluations on both injured and healthy knees: (1) 4 months after surgery and (2) 8 months after surgery; Routine practice following guidelines |
| Measure | Description | Time Frame |
|---|---|---|
| Individual characteristics | Personal characteristics recorded in the medical report as age, gender, type of sport and sport level of practice and return to sport after the surgery | Time Frame: ACL group: Two evaluations on both injured and healthy knees: (1) 4 months after surgery and (2) 8 months after surgery; Routine practice following guidelines |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
All sports patients included in the sport medicine follow-up protocole with isokinetic muscular assessment at 4 months and 8 months after ACL reconstruction surgery since January 2017
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CHU Caen Normandie | Caen | 14000 | France |
Not provided
| ID | Term |
|---|---|
| D000070598 | Anterior Cruciate Ligament Injuries |
| D018908 | Muscle Weakness |
| ID | Term |
|---|---|
| D007718 | Knee Injuries |
| D007869 | Leg Injuries |
| D014947 | Wounds and Injuries |
| D009135 | Muscular Diseases |
Not provided
Not provided
Not provided
Not provided
Not provided
| Injury characteristics | Injury characteristics recorded in the medical report as the type of injury (ACL only, ACL and meniscus, ACL with other ligament injury, recurrent ACL injury) the time before surgery, the type of rehabilitation before and after surgery | Time Frame: ACL group: Two evaluations on both injured and healthy knees: (1) 4 months after surgery and (2) 8 months after surgery; Routine practice following guidelines |
| Surgery characteristics | Surgery characteristics recorded in the medical report as the type of surgery, the surgery duration and tourniquet time | Time Frame: ACL group: Two evaluations on both injured and healthy knees: (1) 4 months after surgery and (2) 8 months after surgery; Routine practice following guidelines |
| D009140 |
| Musculoskeletal Diseases |
| D020879 | Neuromuscular Manifestations |
| D009461 | Neurologic Manifestations |
| D009422 | Nervous System Diseases |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D012816 | Signs and Symptoms |