Graft Maturity After Blood Flow Restriction Training in ACL Reconstruction

NCT ID: NCT05972876

Last Updated: 2025-02-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

46 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-04-17

Study Completion Date

2027-09-30

Brief Summary

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Rationale Graft maturity is correlated with strength and biomechanical properties of the reconstructed ACL. There are concerns that heavy-load resistance training (HLRT) may have detrimental effects on ACL graft maturation. Therefore, low-load blood flow restriction training (LL-BFRT) has been suggested as an alternative to HLRT. As LL-BFRT is an increasingly popular method for the rehabilitation after an ACL reconstruction, it is important to evaluate the value of this treatment.

Objectives The main objective is to evaluate the effect of LL-BFRT on MRI-based graft maturity after ACL reconstruction compared to HLRT. The secondary objectives are the effect of LL-BFRT on donor-site morbidity, range of motion, knee stability, patient reported outcome measurements, muscle strength, safe return to pre-injury level of sport and patient satisfaction. Furthermore, feasibility and safety of rehabilitation will be assessed.

Study design Randomized controlled trial . Study population Patients who will undergo primary bone-patellar tendon-bone ACL reconstruction and rehabilitation at Knie-Heup centrum Plus will be assessed for eligibility. The exclusion criteria are: venous thromboembolism, sickle cell anemia, severe hypertension, contra-indication for accelerated rehabilitation, contra-indication for MRI scan or patients who are not willing/able to participate.

Intervention LL-BFRT includes 12 weeks of biweekly strength training and starts two weeks after surgery.

Comparison HLRT includes 12 weeks of biweekly strength training and starts two weeks after surgery.

Main study endpoints The main endpoints are MRI-based graft maturity defined as signal-to-noise quotient three and nine months after surgery.

Detailed Description

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Conditions

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Anterior Cruciate Ligament Reconstruction Bone-Patellar Tendon-Bone Grafting

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Blood flow restriction training (BFRT)

Patients in the BFRT group will perform four sets (30, 15, 15 and 15 repetitions, respectively) of unilateral leg press, seated leg extension, deadlift and squat exercises with 30s inter-set rest periods throughout a 0-90° range of motion at 30% one-repetition maximum

Group Type EXPERIMENTAL

Blood flow restriction training

Intervention Type BEHAVIORAL

BFR will be achieved using an automatic personalized tourniquet system (MAD-UP, Angers, France) designed to automatically calculate limb occlusion pressure

Resistance training (RT)

Patients in the resistance training group will perform 3x10 reps (30s inter-set rest) of unilateral leg press, seated leg extension, deadlift and squat exercises exercise throughout a 0-90° range of motion with incremental increase in external-load up to 70% of patients' one-repetition maximum

Group Type ACTIVE_COMPARATOR

Resistance training

Intervention Type BEHAVIORAL

Resistance training will be performed without any blood flow restriction

Interventions

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Blood flow restriction training

BFR will be achieved using an automatic personalized tourniquet system (MAD-UP, Angers, France) designed to automatically calculate limb occlusion pressure

Intervention Type BEHAVIORAL

Resistance training

Resistance training will be performed without any blood flow restriction

Intervention Type BEHAVIORAL

Eligibility Criteria

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Inclusion Criteria

* Patients (18-64 years) who will undergo primary BPTB reconstruction at Zuyderland Medical Center and rehabilitation at Knie-Heup centrum Plus.

Exclusion Criteria

* venous thromboembolism, sickle cell anemia, severe hypertension, contra-indication for accelerated rehabilitation, contra-indication for MRI scan or not willing/able to participate.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Zuyderland Medisch Centrum

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jasper Most

Role: PRINCIPAL_INVESTIGATOR

Zuyderland Medisch Centrum

Baris Koc, MD, PhDc

Role: STUDY_DIRECTOR

Zuyderland Medisch Centrum

Locations

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Zuyderland Medical Center

Sittard, Limburg, Netherlands

Site Status RECRUITING

Countries

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Netherlands

Central Contacts

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Jasper Most, PhD

Role: CONTACT

0031625159747

Facility Contacts

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Jasper Most

Role: primary

+31(0)625159747

Other Identifiers

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NL83376.096.22

Identifier Type: -

Identifier Source: org_study_id

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