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International Orthopaedics
Published in: International Orthopaedics 9/2018

01-09-2018 | Original Paper

Location of the femoral tunnel aperture during single-bundle posterior cruciate ligament reconstruction: outside-in versus inside-out techniques

Authors: Jun-Ho Kim, Hoon-Young Kim, Dae-Hee Lee

Published in: International Orthopaedics | Issue 9/2018

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Abstract

Purpose

Placement of the femoral tunnel is critical to graft function after posterior cruciate ligament (PCL) reconstruction. To date, however, the location of the femoral tunnel aperture has not been compared by in vivo 3-dimensional computed tomography (3D-CT) during PCL reconstruction with the outside-in (OI) and inside-out (IO) techniques. This study used 3D-CT analysis to compare the location of the femoral tunnel aperture in patients who underwent PCL reconstruction with the OI and IO techniques.

Methods

A total of 77 patients underwent single-bundle PCL reconstruction using the OI (n = 46) or IO (n = 31) technique. The location of the femoral tunnel aperture was assessed by 3D-CT and measured by the anatomic coordinate axis method to construct 3D surface models.

Results

The mean location of the femoral tunnel aperture in the low-to-high direction did not differ significantly in the OI and IO groups (75.0 vs. 75.2%, P = 0.869). However, in the deep-to-shallow direction, the femoral tunnel aperture was positioned more shallowly in the IO than in the OI group (75.7 vs. 81.1%, P < 0.001).

Conclusion

The IO technique of single-bundle PCL reconstruction yielded a shallower femoral tunnel in the deep-to-shallow direction than did the OI technique. However, femoral tunnel location in the low-to-high direction was similar using the two techniques.
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Metadata
Title
Location of the femoral tunnel aperture during single-bundle posterior cruciate ligament reconstruction: outside-in versus inside-out techniques
Authors
Jun-Ho Kim
Hoon-Young Kim
Dae-Hee Lee
Publication date
01-09-2018
Publisher
Springer Berlin Heidelberg
Published in
International Orthopaedics / Issue 9/2018
Print ISSN: 0341-2695
Electronic ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-018-3954-3

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