ACL Tear
Conditions
Brief summary
The purpose of this study is to characterize quadriceps function and squat biomechanics during the early strengthening phase in adolescent patients undergoing a standardized combined neuromuscular electrical stimulation (NMES) and blood flow restriction (BFR) rehabilitation protocol
Interventions
OTHERNMES and BFR
NMES is applied when patients perform quadriceps strengthening exercises. BFR is applied during compound exercises.
OTHERStandard physical therapy
Standard physical therapy (week 1-16) includes interventions for typical impairments following ACLR. The initial phase will focus on pain and effusion control, restoration of knee range of motion, followed by gait normalization, lower extremity strength training, then running and plyometrics.
Sponsors
Stanford University
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
13 Years to 17 Years
Healthy volunteers
No
Inclusion criteria
* no history of knee injury/surgery of the contralateral limb
Exclusion criteria
* (1) bilateral knee injuries * (2) prior knee ligament injury and/or surgery * (3) multiple ligament injuries and/or ruptures * (4) conditions in which NMES and BFR are contraindicated
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Peak force as measured by isometric knee extension force test | 12 and 16 weeks post surgery | Isometric knee extension force will be measured with a dynamometer. |
| Force steadiness as measured by isometric knee extension force test | 12 and 16 weeks post surgery | Isometric knee extension force will be measured with a dynamometer |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Sagittal plane peak angle at the hip during the descending phase of the squat | 12 and 16 weeks post surgery | Motion analysis will be conducted using the cloud-based OpenCap application |
| Sagittal plane peak angle at the knee during the descending phase of the squat | 12 and 16 weeks post surgery | Motion analysis will be conducted using the cloud-based OpenCap application |
| Sagittal plane peak angle at the ankle during the descending phase of the squat | 12 and 16 weeks post surgery | Motion analysis will be conducted using the cloud-based OpenCap application |
Countries
United States
Contacts
PRINCIPAL_INVESTIGATORAlexandra M Abbott, MD
Stanford School of Medicine
Outcome results
None listed