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The goal of this clinical trial is to evaluate the effects of Blood Flow Restriction (BFR) training on post-surgery rehabilitation following the Latarjet procedure in athletes aged 18-35.
The main questions it aims to answer are:
Does BFR training improve scapular belt muscle strength post-surgery? Does BFR training enhance shoulder function during rehabilitation?
Researchers will compare three groups:
BFR Group with 50% AOP [arterial occlusion pressure] compression BFR Placebo Group with 10% AOP compression Control Group
Participants will:
Perform the same four strengthening exercises twice a week Complete 16 semi-autonomous strength training sessions over 8 weeks Undergo isokinetic and isometric strength tests, shoulder mobility assessments, and complete self-assessment questionnaires.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control | No Intervention | Patient will not use BFR | |
| Placebo 10% of pressure for arterial occlusion | Placebo Comparator | Patient will use BFR sub optimally as described in the literature |
|
| Interventional 50% of pressure for arterial occlusion | Experimental | Patient will use the minimal pressure of 50% of arterial occlusion known to be effective in the literature |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Blood flow restriction (50% AOP compression) in the rehabilitation phase after Latarjet surgery for chronic shoulder instability | Device | Participants undergoing shoulder instability surgery (Latarjet procedure) by a single surgeon will receive standard physiotherapy (2 sessions per week) before being randomized into 3 groups at their 6th postoperative week check-up: Group 1) BFR Group with 50% AOP compression Group 1 will perform a 30-minute strengthening session twice weekly during postoperative weeks 7 to 14. They will do 4 exercises, completing 4 sets with 30-second rest intervals and 1 minute between exercises, following 30-15-15-15 at 40% 1RM (repetition maximum) Exercise : External rotation with pulley/band Internal rotation with pulley/band Frontal elevation with hyperpronation Diagonal abduction-external rotation with pulley/band BFR training will use the MadUp© system, placing the band proximally on the operated arm, with a central unit continuously monitoring and calibrating arm pressure. |
| Measure | Description | Time Frame |
|---|---|---|
| Isokinetic strength | Concentric peak torque (Nm) IR-ER at 60°/sec | Preoperative and at 14 weeks postoperative |
| Isokinetic strength | Concentric peak torque (Nm) IR-ER at 240°/sec | Preoperative and at 14 weeks postoperative |
| Isokinetic strength | Eccentric peak torque (Nm) IR-ER at 60°/sec | Preoperative and at 14 weeks postoperative |
| Isokinetic strength | Concentric ratio (ER conc 60°/ IR conc 60°) | Preoperative and at 14 weeks postoperative |
| Isokinetic strength | Cocking gesture ratio (IR exc 60° /ER conc 240°) | Preoperative and at 14 weeks postoperative |
| Isometric strength | Flexion in the scapular plane (Nm) | Preoperative and at 14 weeks postoperative |
| Isometric strength | Athletic shoulder test (positions I, Y, T) (Nm) | Preoperative and at 14 weeks postoperative |
| Isometric strength | Grip test (Nm) | Preoperative and at 14 weeks postoperative |
| Measure | Description | Time Frame |
|---|---|---|
| Shoulder mobility | Flexion | Preoperative and at 14 weeks postoperative |
| Shoulder mobility | Abduction | Preoperative and at 14 weeks postoperative |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Bauer Stefan, MD | Contact | 0787105993 | +41 | stefan.bauer@ehc.vd.ch |
| Arnaud Meylan, MD | Contact | 0792092956 | +41 | arnaud.meylan@icloud.com |
| Name | Affiliation | Role |
|---|---|---|
| Bauer Stefan, MD | EHC Morges | Study Director |
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Participants between placebo and intervention group will be blinded
|
| Blood flow restriction (10% AOP compression) in the rehabilitation phase after Latarjet surgery for chronic shoulder instability | Device | Participants undergoing shoulder instability surgery (Latarjet procedure) by a single surgeon will receive standard physiotherapy (2 sessions per week) before being randomized into 3 groups at their 6th postoperative week check-up: Group 2) BFR Group with 10% AOP compression Group 2 will perform a 30-minute strengthening session twice weekly during postoperative weeks 7 to 14. They will do 4 exercises, completing 4 sets with 30-second rest intervals and 1 minute between exercises, following 15-15-15-15 at 70% 1RM Exercise : External rotation with pulley/band Internal rotation with pulley/band Frontal elevation with hyperpronation Diagonal abduction-external rotation with pulley/band BFR training will use the MadUp© system, placing the band proximally on the operated arm, with a central unit continuously monitoring and calibrating arm pressure. |
|
| Shoulder mobility | Internal rotation at 90° abduction | Preoperative and at 14 weeks postoperative |
| Shoulder mobility | External rotation at 90° abduction | Preoperative and at 14 weeks postoperative |
| Shoulder mobility | Scapular dyskinesis test (SDT) | Preoperative and at 14 weeks postoperative |
| Scapular girdle stability | Modified closed kinetic upper extremity stability test | Preoperative and at 14 weeks postoperative |
| Scapular girdle stability | Shoulder Instability Return to Sport Index (SIRSI) | Preoperative and at 14 weeks postoperative |
| Scapular girdle stability | Western Ontario Shoulder Instability Index (WOSI) | Preoperative and at 14 weeks postoperative |
| ID | Term |
|---|---|
| D012783 | Shoulder Dislocation |
| ID | Term |
|---|---|
| D004204 | Joint Dislocations |
| D007592 | Joint Diseases |
| D009140 | Musculoskeletal Diseases |
| D014947 | Wounds and Injuries |
| D000070599 | Shoulder Injuries |
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