| Objective: The purpose of this study was qualitatively and quantitatively to determine the osseous landmark of femoral insertion of the ACLMethod: Lateral radiographic images were taken of 35 distal femora with metallic markers overlying the lateral intercondylar ridge.The distributions of the anteromedial and posterolateral bundles femoral attachment. The lateral photos were taken by a high-definition digital camera and then imported into a computer for measurement of the following indicators:Measured :The distance from the posterior extent of Blumensaat’s line to the point where the lateral intercondylar ridge intersects Blumensaat’s line(L1).The length of Blumensaat’s line(L2)The ratio(R1=L1/L2)The distance from over-the-top to the point where the lateral intercondylar ridge intersectse of distalto-posterior’s line edge of cartilage(L3)The distance from over-the-top to distaledge of cartilage:(L4)The ratio(R2=L3/L4)The angle of the lateral intercondylar ridge with respect to Blumensaat’s line(α1)The angle of the lateral intercondylar ridge with respect to Femoral longitudinal axis(α2)Based on above, while in the reconstruction of ACL, the positioning reference data of the femoral attachment were determined and analyzed for determining whether the data were correlated to each other.Results:(1)L1: 7.55±1.09(mm)(2)L2: 28.26±3.19(mm);(3)R1:26.81%±3.23%;(4) L3 : 11.43 ±1.93(mm);(5)L4: 21.60 ±2.62(mm);(6) R2: 52.74%±4.71%;(7)α1: 69.66±7.48(°);(8)α2: 35.06±6.78(°)。Statistical analysis shows: L1(P=0.000),L2(P=0.000), L3(P=0.000),L4(P=0.002), R2(P=0.001), α1(P=0.001), α2(P=0.005) are statistically significant base on gender difference.(P=0.001、P=0.013、P=0.033、P=0.003、P=0.002、P=0.046, P=0.002, P=0.019、P=0.021). R1 are not statistically significant base on Gender difference(P=0.954, P=0.062). All data are not statistically significant base on left or right(P>0.05). Pearson’s analysis shows :Correlation of L1 and L2(R=0.592 P =0.000);Correlation of L1 and R1(R=0.628 P =0.000);Correlation of L1 and L3(R=0.442 P =0.008);Correlation of L1 and L4(R=0.462 P =0.005);NO correlation of L1 and R2,α1,α2;Correlation of L2 and L3(R=0.438 P =0.008);Correlation of L2 and L4(R=0.420 P =0.012);Correlation of L2 and α1(R=0.386 P =0.022);NO correlation of L2 and R1,R2,α2;NO correlation of R1 and L2,L3,L4,R1,R2,α1,α2;Correlation of L3 and L4(R=0.871 P =0.000);Correlation of L3 and R2(R=0.760 P =0.008);NO correlation of L3 and,R1,α1,α2;NO correlation of L4 and R1,R2,α1,α2;NO correlation of R2 and L1,L2, L4,R1,α1,α2;Correlation of α1 and α2(R=0.669 P =0.000).Conclusion:(1)The distance from the posterior extent of Blumensaat’s line to the point where the lateral intercondylar ridge intersects Blumensaat’s line L1: male:8.13.±0.89(mm),female:6.78.±0.84(mm)(2)The length of Blumensaat’s line L2: male:29.81±3.08(mm),female:26.19±1.94(mm);(3)The ratio R1(L1/L2):26.81%±3.23%;(4)The distance from over-the-top to the point where the lateralintercondylar ridge intersectse of distal- to-posterior’s lineedge of cartilage L3 : male:12.49 ±1.55(mm),female:10.01±1.42(mm);(5)The distance from over-the-top to distaledge of cartilage L4: male:22.72 ±2.57(mm),female:20.11 ±1.89(mm)(6) The ratio R2(L3/L4): male:55.00%±2.67%,female:49.8%±5.24(7)The angle of the lateral intercondylar ridge with respect to Blumensaat’s line α1: male:73.05±7.56(°),female:65.15±4.48(°);(8)The angle of the lateral intercondylar ridge with respect to Femoral longitudinal axis α2: male:37.74±7.35(°),female:31.49±3. 75(°);... |
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