[The evaluation by CT of bone block position, interference screw placement and replacement of the anterior cruciate ligament after patellar ligament transplantation].
OBJECTIVE
Evaluation of arthroscopically assisted reconstruction of the anterior cruciate ligament using ligamentum patellae autografts in the bone-tendon-bone technique with special regard to the position of blocks and interference screws.


METHODS
In a prospective study 28 patients were included after undergoing arthroscopic anterior cruciate ligament replacement surgery. Data thus obtained were correlated with the postoperatively determined functional parameters of the affected joint.


RESULTS
Interference screws, bone-blocks and ligamentous transplants could be well imaged using CT. In a comparison of our data with clinical results there was a statistically highly significant correlation between clinical outcome and the position of bone-blocks and interference screws in the tibia. Angles between screw and bone-block exceeding a standard deviation led to significantly worse results, while a divergence in femoral angles did not lead to significantly worse results.


CONCLUSIONS
The postoperative study of anterior cruciate ligament replacement surgery by CT enables the evaluation of the transplant as well as the position of bone-blocks and interference screws.
Bauer
R
R
FUSt 8/Radiologie, Bundeswehrkrankenhaus Leipzig.
Kolbus
F
F
Brückner
B
B
D000328:Adult; D016118:Anterior Cruciate Ligament / Q000000981:diagnostic imaging* / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D001182:Arthroscopy; D001863:Bone Screws; D016025:Bone Transplantation / Q000000981:diagnostic imaging* / Q000706:statistics & numerical data; D016009:Chi-Square Distribution; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D008297:Male; D017847:Patellar Ligament / Q000000981:diagnostic imaging / Q000637:transplantation*; D011184:Postoperative Period; D011446:Prospective Studies; D013977:Tibia / Q000000981:diagnostic imaging / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014182:Transplantation, Autologous / Q000379:methods