Facts about Femur
- 08
During fetal development, the femur begins as cartilage and does not fully ossify until approximately age 18 to 25 years, with the distal epiphysis being the last region to harden into bone.
- 07
Osteoarthritis most commonly affects the hip joint formed by the femoral head and acetabulum, accounting for approximately 10% of all osteoarthritis cases in humans.
- 06
Approximately 25% of the body's total bone marrow resides within the femur's medullary cavity, making it a critical site for blood cell production throughout life.
- 05
Femoral neck fractures account for approximately 6% of all bone fractures in humans, yet represent nearly 50% of hip fractures in elderly populations over age 65.
- 04
Blood vessels and nerves run through the nutrient foramen, a small opening in the femoral shaft that supplies the bone's interior with oxygen and nutrients.
- 03
A broken femur typically requires 12 to 16 weeks of healing in adults, during which the bone forms new callus tissue to bridge the fracture gap.
- 02
In adults, the femur comprises approximately 26% of total body height, making it the longest bone in the human skeleton by a substantial margin.
- 01
The human femur can support roughly 1,700 pounds of force per square inch, making it stronger than concrete in compression strength.