RADIOGRAPHIC ANALYSIS OF THE RELATIONSHIP OF THE LATERAL INTERCONDYLAR RIDGE, BLUMENSAAT'S LINE, AND POSTERIOR MARGIN...

Area of Science:

• Orthopedic Surgery
• Radiology
• Anatomy

Background:

• The lateral intercondylar ridge (LIR) is a key anatomical landmark in the distal femur.
• Accurate localization of the LIR is crucial for surgical procedures, particularly in anterior cruciate ligament (ACL) reconstruction.

Purpose of the Study:

• To determine the radiographic position of the lateral intercondylar ridge (LIR).
• To establish the relationship between the LIR, the Blumensaat line (BL), and the posterior cortex tangent (PCT) of the distal femur.
• To provide quantitative radiological measurements for surgical planning.

Main Methods:

• Radiographic analysis of 35 human femur specimens.
• Labeling the LIR with a 1-gauge wire.
• Acquiring true lateral views and measuring angles between LIR, BL, and PCT.
• Calculating the ratio of LIR intersection with the BL.

Main Results:

• The mean angle between the Blumensaat line (BL) and the lateral intercondylar ridge (LIR) was 70.13° (SD 12.69°).
• The mean angle between the BL and the posterior cortex tangent (PCT) was 143.61° (SD 7.91°).
• The LIR intersects the BL at a 1:6 ratio.

Conclusions:

• Established radiographic measurements provide a reliable method for estimating LIR position.
• These findings facilitate precise preoperative planning, intraoperative tunnel placement, and postoperative analysis in orthopedic procedures.
• The defined relationships enhance surgical accuracy and patient outcomes.