Tibial Tunnel Placement for ACL Reconstruction

Summary

Although extensive research has been carried out on Anterior Cruciate Ligament (ACL) femoral tunnel placement, very little attention has been given to the tibial tunnel. Researchers have suggested that the tibial tunnel be placed in the center of the ACL footprint, which they described as being approximately 43% of the way (anterior-to-posterior) across the proximal tibia at its widest extent. However, others have suggested that a more anterior placement may yield improved biomechanical and clinical results. The center of the ACL footprint and the posterior aspect of the anterior horn of the lateral meniscus does not yield tibial tunnel placement a consistent percentage of the way across the tibial plateau; therefore, guidelines should be based on intraoperative fluoroscopic measurements. However, the question remaining is what percentage of the anterior-to-posterior distance across the tibia is the ideal location for the tibial tunnel in ACL reconstruction. This study will help answer that question.

Patients with a diagnosed rupture of the ACL who are scheduled for surgical reconstruction will be considered for enrollment. Eligible patients will be allocated to one of two groups based on the location of the tibial tunnel (anterior vs. posterior) during the surgical procedure. In addition to a baseline (pre-operative) evaluation, participants will return for follow-up visits at 6, 12, and 24 months post-surgery. Follow up will be completed at 24 months.

The primary objective of this study is to collect subjective and objective measures of knee-related function in patients with an anterior vs. posterior placed tibial tunnel through 24 months postoperative care.

Conditions

• Complete Tear, Knee, Anterior Cruciate Ligament
• Rupture of Anterior Cruciate Ligament

Interventions

PROCEDURE

ACL Reconstruction: Anterior Tunnel

ACL reconstruction with anterior tibial tunnel placement in reference to a point measuring 35% of the anterior-posterior distance of the proximal tibia.

PROCEDURE

ACL Reconstruction: Posterior Tunnel

ACL reconstruction with posterior tibial tunnel placement in reference to a point measuring 35% of the anterior-posterior distance of the proximal tibia.

Sponsors & Collaborators

• University of Kentucky

  collaborator OTHER

• University of Virginia

  lead OTHER

Principal Investigators

• Mark D Miller, M.D. · University of Virginia

• Joseph M Hart, Ph.D. · University of Virginia

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Model

PARALLEL

Eligibility

Min Age

16 Years

Max Age

50 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2015-04-30

Primary Completion

2019-04-30

Completion

2019-04-30

Countries

• United States

Study Locations