![]() ![]() Trochanteric anastomosis, cruciate anastomosis Knee: lateral and medial condyles of the femur with the tibial plateaus of the tibia (tibiofemoral joint) Patellar surface of the femur with the posterior surface of the patella (patellofemoral joint) Hip: femoral head with the acetabulum of the pelvis Shaft - Borders: lateral and medial Surfaces: anterior, medial, lateral Ridges: lateral ridge (gluteal tuberosity), pectineal line, spiral line (these three lines converge and form the linea aspera)ĭistal end - lateral and medial condyles, intercondylar fossa, lateral and medial epicondyles Proximal end - head, neck, greater trochanter, lesser trochanter, intertrochanteric crest ![]() Ossification of the femur is completed between the 14th and 18th years of life. While several ossification centers (points of bone development) appear throughout intrauterine life, the bone continues to develop through childhood and early adolescence. The femur begins to develop between the 5th to 6th gestational week by way of endochondral ossification (where a bone is formed using a cartilage-based foundation). Distally, it interacts with the patella and the proximal aspect of the tibia. Proximally, the femur articulates with the pelvic bone. Femur anatomy is so unique that it makes the bone suitable for supporting the numerous muscular and ligamentous attachments within this region, in addition to maximally extending the limb during ambulation. The femur bone is the strongest and longest bone in the body, occupying the space of the lower limb, between the hip and knee joints.
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