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Active, Not Recruiting

NCT Number: NCT02772770

Pediatric ACL: Understanding Treatment Options

Pediatric ACL: Understanding Treatment Outcomes (PLUTO) is a multi-center, prospective cohort study. Specific aims of PLUTO are to evaluate the safety and comparative effectiveness of non-operative treatment, as well as four operative treatments including (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique in prepubescent and pubescent skeletally immature patients.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Age range

5 year–18 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Stanford University Medical Center, Palo Alto, California, United States

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About this study

Anterior Cruciate Ligament (ACL) injuries are being seen with increased frequency in pediatric and adolescent patients. The management of these injuries is controversial and includes nonoperative treatment and operative treatment with various surgical techniques. Pediatric ACL: Understanding Treatment Outcomes (PLUTO) is a multi-center, prospective cohort study. Specific aims of PLUTO are to evaluate the safety and comparative effectiveness of non-operative treatment, as well as four operative treatments including (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique in prepubescent and pubescent skeletally immature patients. Accrual will take place over eight years at 9 pediatric sports medicine centers. Post-treatment outcome assessment will be performed at 6-9 months, 1 year, and 2, 5, and 10 years after treatment , including functional outcome, activity level, health-related quality of life, graft survivorship, knee stability, knee motion, and growth disturbance.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Diagnosis of complete intrasubstance ACL tear
  • Skeletally Immature (by knee radiographs)

Exclusion criteria

  • Prior ACL surgery on the ipsilateral knee
  • Congenital ACL deficiency
  • Multiple ligament reconstruction required
  • Other significant comorbidities including syndromic conditions, neuromuscular disorders or developmental delay
  • If scheduling of the ACL surgery is impacted by the skeletal maturity of the patient
  • Simultaneous bilateral ACL tears

Treatment and study plan

Non-operative treatment group will undergo standardized treatment which will include rehabilitation, bracing and certain activity restrictions

Other

The non-operative treatment group will undergo standardized treatment which will include rehabilitation, bracing and certain activity restrictions.

Surgical technique: Transphyseal reconstruction

Procedure

Study physicians will have the option to treat ACL injuries operatively or non-operatively, according to their standard of care. However, once the decision is made to manage the injury operatively or non-operatively, the physician must follow the appropriate standardized treatment protocol developed for the study. The operative treatment protocol will include standardized surgical techniques for transphyseal reconstruction with soft tissue graft and metaphyseal fixation.

Surgical technique: Partial transphyseal reconstruction

Procedure

Study physicians will have the option to treat ACL injuries operatively or non-operatively, according to their standard of care. However, once the decision is made to manage the injury operatively or non-operatively, the physician must follow the appropriate standardized treatment protocol developed for the study. The operative treatment protocol will include partial transphyseal reconstruction (tibial transphyseal and femoral epiphyseal) with soft tissue graft.

Surgical technique: Physeal sparing reconstruction by the Anderson method

Procedure

Study physicians will have the option to treat ACL injuries operatively or non-operatively, according to their standard of care. However, once the decision is made to manage the injury operatively or non-operatively, the physician must follow the appropriate standardized treatment protocol developed for the study. The operative treatment protocol will include standardized surgical techniques for physeal sparing epiphyseal reconstruction with soft tissue graft (Anderson technique).

Surgical technique: Physeal sparing reconstruction by the Micheli/Kocher method

Procedure

Study physicians will have the option to treat ACL injuries operatively or non-operatively, according to their standard of care. However, once the decision is made to manage the injury operatively or non-operatively, the physician must follow the appropriate standardized treatment protocol developed for the study. The operative treatment protocol will include physeal-sparing with Iliotibial band combined extra-articular and intra-articular reconstructions (Micheli/Kocher Technique).

Primary outcomes

  1. Knee functional outcome at 2 years post-ACL reconstruction (Pedi-IKDC)

    Time frame: 2 years

    To compare outcomes associated with four surgical techniques performed to treat complete intrasubstance ACL tears in pre- and early pubescent children: (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique.

Secondary outcomes

  1. Health-related quality of life (Pediatric Quality of Life Inventory (PedsQL)

    Time frame: 2 years

    To compare outcomes associated with four surgical techniques performed to treat complete intrasubstance ACL tears in pre- and early pubescent children: (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique.

  2. Graft failure (MRI, Lachman, Pivot-Shift)

    Time frame: 2 years

    To compare outcomes associated with four surgical techniques performed to treat complete intrasubstance ACL tears in pre- and early pubescent children: (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique.

  3. Activity level (P-FABS and Physical Activity Questionnaire)

    Time frame: 2 years

    To compare outcomes associated with four surgical techniques performed to treat complete intrasubstance ACL tears in pre- and early pubescent children: (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique.

  4. Growth disturbance (angular deformity, leg length discrepancy per clinical exam and radiographs)

    Time frame: 2 years

    To compare outcomes associated with four surgical techniques performed to treat complete intrasubstance ACL tears in pre- and early pubescent children: (1) transphyseal ACL reconstruction (2) partial transphyseal ACL reconstruction, (3) physeal-sparing epiphyseal ACL reconstruction using the Anderson technique, and (4) physeal-sparing ACL reconstruction using the Micheli/Kocher technique.

Other outcomes

  1. Re-injury or instability requiring ACL reconstruction

    Time frame: 2 years

    To establish outcomes associated with non-operative treatment (rehabilitation, bracing and activity restriction) used to manage complete intrasubstance ACL tears in pre- and early pubescent children.

  2. Knee function (Pedi-IKDC)

    Time frame: 2 years

    To establish outcomes associated with non-operative treatment (rehabilitation, bracing and activity restriction) used to manage complete intrasubstance ACL tears in pre- and early pubescent children.

  3. Health-related quality of life (PedsQL)

    Time frame: 2 years

    To establish outcomes associated with non-operative treatment (rehabilitation, bracing and activity restriction) used to manage complete intrasubstance ACL tears in pre- and early pubescent children.

  4. Activity level ( P-FABS and Physical Activity Questionnaire)

    Time frame: 2 years

    To establish outcomes associated with non-operative treatment (rehabilitation, bracing and activity restriction) used to manage complete intrasubstance ACL tears in pre- and early pubescent children.

  5. Subsequent meniscal or chondral injury (MRI)

    Time frame: 2 years

    To establish outcomes associated with non-operative treatment (rehabilitation, bracing and activity restriction) used to manage complete intrasubstance ACL tears in pre- and early pubescent children.

Sponsors and collaborators

Lead sponsor

Boston Children's Hospital

Other

Collaborators

  • Children's Healthcare of Atlanta
  • Children's Hospital Medical Center, Cincinnati
  • Children's Hospital of Philadelphia
  • Hospital for Special Surgery, New York
  • Rady Children's Hospital, San Diego
  • Stanford University
  • Tennessee Orthopedic Alliance
  • The Cleveland Clinic
  • Washington University School of Medicine

Registry information

Official study title

Pediatric ACL: Understanding Treatment Options (PLUTO)

Acronym: PLUTO

Important dates

Study start
2016
Primary completion
2030
Study completion
2030
First posted
May 16, 2016
Registry last updated
May 13, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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