when the epiphyseal plate is replaced by bone and becomes an epiphyseal line
Epiphyseal plate The plate is not only found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line. This replacement is known as epiphyseal closure or growth plate fusion. Complete fusion happens between ages 12â€“16 for girls and 14-19 for boys.[1]
Femur The femur (/ˈfiːmər/, pl. femurs or femora /ˈfɛmərə/)[1][2] or thigh bone, is the proximal bone of the hindlimb in tetrapod vertebrates. The head of the femur articulates with the acetabulum in the pelvic bone forming the hip joint, while the distal part of the femur articulates with the tibia and kneecap forming the knee joint. By most measures the femur is the strongest bone in the body. The femur is also the longest bone in the human body.