AI Article Synopsis
- The study investigates how preserving remnant tissue affects the creation of a rounded rectangular femoral tunnel during anterior cruciate ligament reconstruction.
- 198 patients were analyzed, divided into preservation (group P) and non-preservation (group N) groups, using CT images to evaluate tunnel placement and angles.
- Results showed that the preservation technique resulted in a significantly lower femoral tunnel compared to non-preservation, but no notable differences in tunnel rotation or graft bending angles were found.
Article Abstract
Purpose: We have previously described anterior cruciate ligament reconstruction with a rounded rectangular femoral tunnel created using a rounded rectangular dilator designed to enable a more anatomical and wider tendon-bone junction. However, the influence of remnant tissue preservation on the creation of the rounded rectangular femoral tunnel is not clear. This study aimed to evaluate the influence of remnant tissue preservation on the creation of the rounded rectangular femoral tunnel.
Methods: A total of 198 patients who underwent primary anterior cruciate ligament reconstruction with a rounded rectangular femoral tunnel were evaluated retrospectively. Patients were categorized into a remnant preservation group (group P) and a non-preservation group (group N). Computed tomography images taken 1 week postoperatively were analyzed. The location of the rounded rectangular femoral tunnel evaluated using the quadrant method, its rotation angle, and the graft bending angle were compared between the two groups. The differences and the variance in femoral tunnel assessment were compared using the two-sample t-test and Levene's test.
Results: Although there was no significant difference in the location of femoral tunnel for the deep/shallow direction along the Blumensaat's line (difference, = .326; variances, = .970), the tunnel was significantly lower in group P than in group N, with no variances (difference, = .001; variances, = .326). There were no significant differences and no variances in the tunnel rotation angle and the graft bending angle (difference, = .727 and 0.514, respectively; variances, = .827 and .445, respectively). Blow out of the posterior wall of the medial aspect of the femoral lateral condyle was an intraoperative complication that occurred in one case in group N.
Conclusion: The remnant preservation approach creates a lower femoral tunnel compared to the non-preservation technique. However, a rounded rectangular femoral tunnel can be created safely and is reproducible with remnant tissue preservation.
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| http://dx.doi.org/10.1177/23094990211061249 | DOI Listing |
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