2017 ISAKOS Biennial Congress ePoster #1174

 

Study Of Bony Morphometry Of Femoral ACL Footprint Using 3-D CT In Normal Knees In Indian Patients

Vinod Kumar, MBBS, MS, DNB, MNAMS, New Delhi, New Delhi INDIA
Shekhar Tank, MBBS, MS, Delhi, Delhi INDIA
Jeetendra Lodhi, MBBS,MS, New Delhi, Delhi INDIA
Rakesh Sehrawat, MBBS, MS, Ghaziabad , Uttar Pradesh INDIA
Deepak Gupta, MBBS, MS, New Delhi, Delhi INDIA

Maulana Azad Medical College, New Delhi, Delhi, INDIA

FDA Status Cleared

Summary

The purpose of this study is to evaluate the bony morphometry of femoral ACL footprint using 3 dimensional CT in normal knees of Indian patients.

Abstract

Background

With the identification of two separate bundles of ACL and growing interest in double bundle anatomic reconstruction, characterization of insertion site anatomy of ACL has received attention. To give the better clinical results, it is desirable that the ACL is reconstructed to its anatomical insertion site as much possible. The purpose of the study is to evaluate the bony morphometry of femoral ACL footprints using 3 dimensional CT in normal knees of Indian patients.

Material And Method

Total of 20 patients were included in the study & CT scans of their normal knees were done using 3D CT scan. All the CT scans were individually reported randomly by two senior radiologists separately twice by each at an interval of minimum three weeks. Impression of femoral footprint of ACL was demarcated on volume rendered images. The anatomical position of centres of anteromedial (AM) & posterolateral (PL) bundles was measured by coordinate axis method.

Results

On the medial wall of lateral femoral condyle in the anatomic posterior to anterior direction, the centres of AM & PL bundles of ACL were located at a mean of 26.9 ± 4.2 % and 16.9 ± 3.6 % respectively. The proximal to distal locations of centres of the AM & PL bundle were 22.5 ± 2 % and 49.8 ± 6.2 % respectively. The interobserver and intraobserver reliability of 3D CT scan in assessment of femoral footprint anatomy was excellent.

Conclusion

Our study demonstrates that 3D CT is a useful tool to evaluate the femoral footprint anatomy of ACL bundles. The results of our study seem to be in tune with the published cadaveric studies from western world and found no significant difference in the bony morphometry of ACL footprint from the western world. The study may be considered as the landmark for future studies of anatomic ACL reconstructions.