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Anterior Cruciate Ligament (ACL) Reconstruction Using Different Grafts and Surgical Techniques

This study has been terminated.
(Study temporarily suspended until funding can be secured.)
Information provided by (Responsible Party):
Dr. David Bardana, Queen's University Identifier:
First received: March 6, 2006
Last updated: September 9, 2015
Last verified: September 2015
ACL reconstruction in the Division of Orthopaedic surgery at Queen's is currently being performed arthroscopically assisted. The resultant function of the reconstructed ligament is greatly influenced by the placement of the transosseous tunnels, which are tunnels in the bones through which the grafts pass. Presently the placement of the tunnels is being judged from arthroscopically identified anatomical landmarks within the joint. The result is incidence rates of misplaced tunnels as high as 40%. Computer assisted tunnel placement would aid in the correction and reproducibility of anatomic tunnel placement. The objective of this study is to conduct a prospective, randomized trial comparing clinical and radiographic outcomes in subjects who receive either a patella or hamstring tendon graft to reconstruct a chronic tear of the anterior cruciate ligament. All subjects will be further randomized into a computer-assisted or a conventional arthroscopic surgical group to allow investigators to compare the precision and accuracy of tunnel placement between these surgical approaches. The main question under investigation is: does the increased accuracy of computer-assisted surgery make a clinical difference to the laxity of the reconstructed knee, and is the laxity further influenced by the type of tendon graft received?

Condition Intervention Phase
Anterior Cruciate Ligament Reconstruction Procedure: Computer-assisted surgery Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Single (Participant)
Primary Purpose: Treatment
Official Title: Anterior Cruciate Ligament Reconstruction: Comparison of Patellar With Hamstring Tendon Using a Computer-assisted Versus a Conventional Surgical Technique.

Resource links provided by NLM:

Further study details as provided by Dr. David Bardana, Queen's University:

Primary Outcome Measures:
  • The main outcome under investigation is knee laxity as reflected by graft tension. [ Time Frame: 2 years ]

Secondary Outcome Measures:
  • Other outcomes of interest include graft isometry, position and size as well as knee pain, stiffness, function, and range of motion. [ Time Frame: 2 years ]

Enrollment: 125
Study Start Date: September 2009
Estimated Study Completion Date: January 2029
Estimated Primary Completion Date: January 2028 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
No Intervention: 1
applying a patellar graft using conventional surgical technique.
No Intervention: 2
applying a hamstring graft using conventional surgical technique.
Experimental: 3
applying a patellar graft using a computer-assisted surgy technique.
Procedure: Computer-assisted surgery
no description
Experimental: 4
hamstring graft CAOS
Procedure: Computer-assisted surgery
no description


Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Diagnosis of a chronic unilateral rupture of the anterior cruciate ligament
  • Aged 18-40

Exclusion Criteria:

  • Acute injury of the ACL (interval between the injury and operation is < 30 days).
  • Other ligament tears and/or operation on the operative knee (with the exception of a previous meniscectomy).
  • Injury of the contralateral knee.
  • Degenerative changes of the articular cartilage (grade III or IV changes according to the Outerbrige classification system)
  • Complaints of patellofemoral symptoms
  • Patient is pregnant
  • Inability to complete 2-year follow-up
  Contacts and Locations
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Please refer to this study by its identifier: NCT00300300

Canada, Ontario
Kingston General Hospital
Kingston, Ontario, Canada, K7L 2V7
Sponsors and Collaborators
Queen's University
Principal Investigator: Davide Bardana, MD Queen's University (faculty)
  More Information

Responsible Party: Dr. David Bardana, Principal Investigator, Queen's University Identifier: NCT00300300     History of Changes
Other Study ID Numbers: Bard0105
Study First Received: March 6, 2006
Last Updated: September 9, 2015

Keywords provided by Dr. David Bardana, Queen's University:
ACL computer-assisted surgery graft processed this record on August 22, 2017