The diaphysial nutrient foramina on the femur were located at between 26.7-84.4% of the total length; while on the tibia between 11.0-67.2%; and on the fibula between 29.8-67.8% of the total . All of the foramina were directed towards the proximal end. The nutrient canal (foramen)is directed away from the growing end of bone. The single nutrient foramen was 12612 mm away from the greater trochanter in cadaver specimens versus 13111 mm on angiography. Background: Nutrient artery canals of the femur are often visible on plain radiographs as radiolucent lines which may mimic fracture lines. The nutrient foramen of the femur was located in the linea spera in the 72,5% (36,25% in the interstice, 8,75 in the lateral lip of the linea spera and 27,5 in the medial lip of the linea . In lower limb, the lower end of femur and upper end of tibia are the growing ends. As bones are the only tissues remaining from non-avian dinosaurs, the relationships between nutrient foramina size and metabolic capacity developed for mammals and reptiles can indicate the Materials and methods: Ninety-three patients (102 hips) with an average age of 65.6 years were included in the study. Our bilateral case was a female measuring 145 cm. Triple nutrient foramen was seen in 2.5% right femur (1) where as it were not seen in left femur. If two nutrient arteries were present, the distances between the tip of the trochanter and the upper and lower nutrient foramina were 10911 mm and 17324 mm, respectively. [1] The nutrient arteries along with veins pass through this canal. To provide anatomical data on the nutrient foramen (NF), the authors observed the number, site and its index (SI), position, diameter and penetrating direction of the nutrient canal (NC) in the femur and tibia of . Genuine fractures are often accompanied by soft tissue swelling. All human femoral nutrient foramina were also found to have a proximal directionality, different to all . The growing ends of bones in upper limb are upper end of humerus and lower ends of radius and ulna. Number of foramina ranged from 0-3 in femur, 1-2 in tibia and 0-2 in fibula. The most common location of nutrient foramen was the medial lip of linea aspera (n= 77, 41.85%). A nutrient foramen (plural: nutrient foramina) or vascular channel is a small tunnel through the cortex of a long bone containing a nutrient artery which supplies the bone. The largest nutrient foramen in 19(42.2%) bones was located at the level of proximal one-third of linea aspera; in 17 (37.8%) bones at the level of middle one-third; and in 9 (20%) bones at the level of lower one-third of linea aspera (Figure). femur (34) and 47.5% of left side femur (19), double nutrient foramina in 12.5% of right femur (5) and 52.5% of left femur (21). Factors most likely to result in cement extravasation into the nutrient foramen include less oblique and wide foramen and those associated with the cement itself such as high pressure. Results: Total nutrient foramen calculated; 178 in femur, 137 in tibia, 121 in fibula. The proximal NF of the femur was regarded to be the major NF, because it was present in most dogs and had the largest diameter and the direction of the NC followed Brard's rule. Most had single foramen; femur (66%), tibia (96%) and fibula (94%). Careful correlation of X-ray findings with clinical features are often useful to eliminate significant injury. It has been observed that a total of 47 nutrient Foramina were present mainly on the posterior surface of the bones [linea aspera in femur (96), below soleal line . The foramina are known to mimic oblique fractures on plain radiographs 1. Patient size associated with a narrow femur and the ability of the cement gun to occlude the medulla may . between femoral nutrient foramen size, bone volume, body mass and resting and maximum metabolic rates in living mammals and reptiles. The foramina are known to mimic oblique fractures on plain radiographs 1. All human femoral nutrient foramina were found on the posterior surface (alongside the linea aspera, a site for muscle attachments running along the shaft), whereas all sheep and pig femoral foramina were located on the anterior bone surface. A nutrient foramen (plural: nutrient foramina) or vascular channel is a small tunnel through the cortex of a long bone containing a nutrient artery which supplies the bone. Conclusion: The present study has reported the majority of nutrient foramina located in the middle third of femur along the linea aspera. A nutrient foramen (plural: nutrient foramina) or vascular channel is a small tunnel through the cortex of a long bone containing a nutrient artery which supplies the bone. There are numerous normal anatomical features which may mimic fractures. The purpose of this study was to distinguish nutrient artery canals from fracture lines on plain radiographs. Correlation with clinical findings is essential. The foramina are known to mimic oblique fractures on plain radiographs 1. Some fracture mimics have characteristic features.