Abstract
Background : knowledge with respect to nutrient foramina of bones is helpful in surgeries, for example, microvascular bone exchange to safeguard the dissemination. In any case, there is not many information on Morphometric investigates of the supplement foramina of femur and humerus in Egyptians.
Subjects and methods : Between June 2019 and September 2020, we prospectively assess morphology of nutrient foramina included 350 adult long limb bones of femur and humerus Department of Anatomy in Al-Azhar University . the age and gender of which were not determined of Egyptian subjects. The bones were examined for the number, location and direction of the nutrient foramina.
Aim of the work : To investigate the morphology of nutrient foramina of femur and humerus regarding to their numbers and localizations and to determine their foraminal index to provide detailed data on such features.
Results : The foramina were most determined in anteromedial aspect 61% of cases on the shaft of bone in the humerus , its foramial indices were 32.1 – 68.7 % and the most of study (84%) had one nutrient foramen. In femur, we founded that the range of foraminal indices of bone 26.1 – 68 % , mainly sample (88% ) located in the middle third of the bone and (30%) had one nutrient foramen, (60%) had two nutrient foramina and only (10%) had three nutrient foramina. 56.1% nutrient foramina were located in between upper and middle 1/3rd of the Femur,,18.7% nutrient foramina were located in between middle and lower 1/3rd of the Femur ,, 23% nutrient foramina were located in middle half of the length of the Femur.
Foraminal Index (FI): (Distance of nutrient foramen / Total length) ×100
Conclusion: The anatomical information of the nutrient foramen of the long bones of limb as femur and humerus is important for orthopaedic surgeons during surgical operations of bones.

Key words: Nutrient Foramen, Long Bones, Foramina Index, Position, Location.