Published in:
01-01-2016 | knee
Morphologic evaluation of remnant anterior cruciate ligament bundles after injury with three-dimensional computed tomography
Authors:
Nobuo Adachi, Mitsuo Ochi, Kobun Takazawa, Minoru Ishifuro, Masataka Deie, Atsuo Nakamae, Goki Kamei
Published in:
Knee Surgery, Sports Traumatology, Arthroscopy
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Issue 1/2016
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Abstract
Purpose
This study aimed to investigate the morphological patterns of remnant anterior cruciate ligament bundles after injury (ACL remnant) on three-dimensional computed tomography (3DCT) and compare them with those on arthroscopy.
Methods
Sixty-three patients (33 males and 30 females; mean age 25.2 ± 10.1 years) who had undergone primary ACL reconstruction between March 2011 and December 2012 were included in this study. The average durations between traumas and 3DCT and between 3DCT and surgery were 101.7 ± 87.2 and 38.2 ± 38.7 days, respectively. ACL remnants were classified into four morphological patterns on 3DCT. 3DCT findings were compared with arthroscopic findings with and without probing.
Results
The morphological patterns of the ACL remnants on 3DCT were well matched with those on arthroscopy without probing (the concordance rate was 77.8 %). However, the concordance rate was reduced to 49.2 % when arthroscopic probing was used to confirm the femoral attachment of ACL remnants (p ≤ 0.05).
Conclusions
This study demonstrates that the morphological patterns of ACL remnants on 3DCT were well matched with those on arthroscopy without probing. Therefore, the technique can be useful for preoperative planning of the ACL reconstruction or informed consent to the patients. However, for definitive diagnosis, arthroscopic probing is required.