Dimension of normal anterior cruciate ligament on MRI in our population.

Objective: The present study will help us in establishing local statistics in our population. Study Design: Descriptive study. Setting: Department of Orthopedic Surgery at Khyber Teaching Hospital in Peshawar. Period: June 2023 to December 2023. Methods: Seventy MRI of knee were collected. Knee MR images sagittal and coronal plane (T2-Weighted Images) were reviewed by radiologist and only knees with an intact cruciate ligament were included in the study. All the measurement (length and width) were made with electronic caliper. Results: Regarding radiological length of ACL on sagittal view on MRI, the minimum length was 28mm and maximum was 46mm and mean length was 34mm and standard deviation of 4.49, Regarding width of ACL on sagittal view it was found that the minimum length was 8mm and maximum was 16mm and its mean length was 10.4mm with standard deviation of 2.02. While the width of ACL on coronal plane was such that the minimum length was 6mm maximum was 16mm its mean was 11.34 and standard deviation of 2.48. By applying one sample T-Test and compare with Kowen parameter the p value was 0.00 for both length and width showing statistically highly significant. Conclusion: In conclusion in our population ACL is shorter and thicker then westerns population. Further studies should be done arthroscopically and on cadaveric to establish our local statistics of anthropometric measurements of anterior cruciate ligament.