COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu

L-C Ligament Versus Hamstring Autograft for Primary ACL Reconstruction

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02183727
Recruitment Status : Terminated (new product design)
First Posted : July 8, 2014
Last Update Posted : April 26, 2017
Information provided by (Responsible Party):
Soft Tissue Regeneration, Inc.

Brief Summary:
The purpose of this study is to compare safety and efficacy outcomes of the L-C Ligament versus Hamstring Autograft for treatment of acute rupture of the ACL.

Condition or disease Intervention/treatment Phase
Acute Ruptures of the Anterior Cruciate Ligament Device: L-C Ligament Procedure: Hamstring Autograft Phase 2 Phase 3

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 60 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: L-C Ligament Versus Hamstring Autograft for Primary ACL Reconstruction: A Prospective, Randomized Controlled Trial
Study Start Date : September 2015
Actual Primary Completion Date : September 2016
Estimated Study Completion Date : September 2020

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: L-C Ligament
Soft Tissue Regeneration's L-C Ligament is an investigation, interventional device intended for ACL reconstruction surgery within 18 weeks of acute rupture of the ACL and no previous surgical treatment. The L-C Ligament temporarily replaces the human anterior cruciate ligament (ACL) and provides a bioresorbable scaffold within and around which the native ACL will regenerate over time.
Device: L-C Ligament
The L-C Ligament is a bioresorbable, three-dimensional (3-D) braided scaffold made from poly L-lactic acid (PLLA) fiber. One device is used to replace the ACL. The L-C Ligament is an interventional device. The L-C Ligament is comprised of three regions: (1) The femoral tunnel attachment site, (2) The ligament region (intra-articular zone), and (3) The tibial tunnel attachment site. For several months after surgery, the L-C Ligament replaces the function of the ACL. During this time, ligament tissue regenerates within and around the L-C Ligament, which is slowly absorbed and replaced by the ACL.

Active Comparator: Hamstring Autograft
Hamstring autograft is the active comparator for this study. Autograft tissue is the gold-standard treatment for primary ACL reconstruction.
Procedure: Hamstring Autograft
The gold-standard treatment for ACL reconstruction is autograft tissue. Autograft is a piece of tendon harvested from another part of the patient's body, such as the hamstring or kneecap. In this study, the hamstring tendon from the back of the thigh of the injured (target) leg will be harvested and surgically transferred to replace the torn ACL. The attachment of the autologous tendon in the femoral and tibial bone tunnels will utilize techniques that are similar to those for the L-C Ligament. Over time the replacement tendon resorbs and a new ACL is regenerated.

Primary Outcome Measures :
  1. Graft Failure [ Time Frame: 12 Months ]
    Revision surgery rate at one year

  2. Physical Knee Function measured by the IKDC [ Time Frame: 12 Months ]
    Physical Knee Function at 12 Months post procedure

Secondary Outcome Measures :
  1. Pain Score [ Time Frame: Day 1 ]
    Pain levels day 1 post-procedure

  2. Adverse event rates [ Time Frame: 12 months ]
    Rate of AEs throughout the first year of follow-up

Other Outcome Measures:
  1. Physical Knee Function as measured by the Lysholm scale [ Time Frame: over 24 months ]
    Physical Knee Function scores at all follow-up timepoints through Month 24

  2. Return to Pre-Injury Physical Activity Levels as measured by the Tegner scale [ Time Frame: over 24 months ]
    Physical activity level scores at all follow-up timepoints through Month 24

  3. Knee Outcomes (Pain, symptoms, ability ot perform daily activities, sports, and quality of life) as measured by the KOOS [ Time Frame: over 24 months ]
    KOOS scores at all follow-up timepoints through Month 24

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients with acute ruptures of the ACL who are willing to undergo treatment within 18 weeks of injury

Exclusion Criteria:

  • Prior ACL reconstruction or other surgical procedure on the affected (target) knee
  • Chronic ACL injury; interventional surgery scheduled 127 days or more after ACL injury
  • Professional athletes currently engaged in active sport
  • Prior distal femoral and/or proximal tibial fracture(s) of the target leg
  • Previous or current ACL injury on contra-lateral leg
  • Multi-ligament reconstruction
  • Malalignment or varus thrust
  • Patient > 193 cm tall (6' 4")
  • The patient does not follow pre-operative rehabilitation that may have been prescribed post-injury (prior to Index Procedure)
  • Confirmed connective tissue disorder
  • Signs of moderate to severe degenerative joint disease
  • Severe pain, swelling, or redness within 24 hours prior to surgery
  • Complete or partial Posterior Cruciate Ligament (PCL) tear
  • If concomitant meniscal injury is present, any of the following: 1/3rd meniscal resection; complex double-bucket tear; partially repaired meniscal tears
  • Any type of lateral and/or medial meniscal tear which is not repairable (<2mm from rim)
  • Additional concomitant injuries to the knee or lower extremities requiring treatment, per surgeon's discretion, that are not allowable under the Inclusion criteria
  • The patient is unwilling to not participate in sporting activities for at least 9 months post-procedure
  • The patient is mentally compromised
  • The patient has a neuromuscular disorder that would engender unacceptable risk of knee instability, prosthesis fixation failure, or complications in postoperative care
  • The patient has an active or latent infection in or about the affected knee joint or an infection site distant from the knee that may spread to the knee hematogenously
  • Pregnant based on a positive beta hCG serum or an in vitro diagnostic test result or breast-feeding
  • The patient is obese with a BMI > 35
  • The patient has a known allergy to PLLA
  • The patient has a medical condition or comorbidity that would interfere with study participation

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02183727

Layout table for location information
Isala Klinieken
Zwolle, Netherlands
Sponsors and Collaborators
Soft Tissue Regeneration, Inc.
Layout table for investigator information
Principal Investigator: Kees van Egmond, MD Isala Klinieken, Zwolle, The Netherlands
Layout table for additonal information
Responsible Party: Soft Tissue Regeneration, Inc. Identifier: NCT02183727    
Other Study ID Numbers: LC1060
First Posted: July 8, 2014    Key Record Dates
Last Update Posted: April 26, 2017
Last Verified: April 2017
Keywords provided by Soft Tissue Regeneration, Inc.:
knee injury
anterior cruciate ligament
Additional relevant MeSH terms:
Layout table for MeSH terms
Wounds and Injuries