[Influence of morphometric intercondylar notch parameters in ACL ruptures]

Area of Science:

• Orthopedic Surgery
• Radiology
• Biomechanics

Background:

• Anatomic variations in the intercondylar notch are implicated as risk factors for anterior cruciate ligament (ACL) injuries.
• Morphometric parameters, specifically the notch width index (NWI) and notch shape index (NSI), are commonly utilized to assess these variations.

Purpose of the Study:

• To compare the efficacy of standard intercondylar notch indexes (NWI and NSI) versus maximal measurements (NWImax and NSImax) in identifying anatomical risk factors for ACL lesions.
• To determine which morphometric measurement method best correlates with ACL injury status.

Main Methods:

• Morphometric analysis of the intercondylar notch and distal femur was performed on 33 patients with knee injuries.
• Two groups were established: patients with documented ACL injuries and a control group without ACL injuries.
• Standard NWI and NSI, along with maximal NWImax and NSImax, were calculated and compared between groups.

Main Results:

• Significant differences were observed between the ACL injury and control groups for standard NWI (p < 0.01) and NSI (p < 0.05).
• Maximal measurements (NWImax and NSImax) did not show significant differences between the groups (p > 0.05).
• The predictive value of NWI and NSI was more pronounced in males than in females.

Conclusions:

• Standard measurements of intercondylar notch width index (NWI) and notch shape index (NSI) are valuable indicators of ACL injury risk.
• Maximal notch measurements (NWImax and NSImax) do not appear to be reliable predictors of ACL lesions.
• Gender influences the association between notch morphology and ACL injury risk, with NWI and NSI being more critical in males.