Table 1 Summary of the characteristics of the 100 bones
Variables | N | mean±SD | (range: min.-max.) |
|---|---|---|---|
Length of femur, mm | 100 | 393.28±23.88 | (335.6-445.89) |
Length of femoral neck. mm | 100 | 22.53±3.93 | (15.91-35.72) |
Total number of nutrient foramina | |||
Superior retinacular arteries | 100 | 25.11±6.5 | (11-44) |
Inferior retinacular arteries | 100 | 5.97±3.25 | (1-19) |
Anterior retinacular arteries | 100 | 8.23±4.15 | (2-22) |
Ligamentum teres ateries | 56 | 3.25±2.52 | (1-15) |
Total -1(included ligamentum teres arteries) | 56 | 42.93±9.31 | (22-63) |
Total -2 (excluded 1igamentum teres arteries) | 44 | 38.84±9.53 | (17-64) |
Total area of nutrient foramina. mm2 | |||
Superior retinacular arteries | 100 | 15.59±5.71 | (5.65-34.27) |
Inferior retinacular arteries | 100 | 3.63±2.11 | (0.4-11.88) |
Anterior retinacular arteries | 100 | 4.32±2.52 | (0.79-14.69) |
Ligamentum teres arteries | 56 | 1.58±1.21 | (0.11-5.43) |
Total -1(included ligamentum teres arteries) | 56 | 24.97±6.57 | (10.65-42.07) |
Total -2 (excluded 1igamentum teres arteries) | 44 | 23.74±7.77 | (13.35-43.32) |
Ratio of nutrient foramina number in Total | |||
Superior retinacular arteries / Total-1 | 56 | 0.58±0.08 | (0.38-0.76) |
Inferior retinacular arteries / Total-1 | 56 | 0.14±0.06 | (0.03-0.33) |
Inferior retinacular arteries / Total-1 | 56 | 0.20±0.08 | (0.07-0.44) |
Ligamentum teres arteries / Total-1 | 56 | 0.08±0.05 | (0.02-0.28) |