Femur vs Quadriceps femoris
| Property | Femur | Quadriceps femoris |
|---|---|---|
| Latin Name | Os femoris | Musculus quadriceps femoris |
| Type | Bone | Muscle |
| Body System | Skeletal | Muscular |
| Body Region | Thigh | Thigh |
| Function | The longest and strongest bone in the human body. Bears the weight of the body and provides attachment for powerful thigh muscles. Transmits body weight from the hip to the … | The most powerful extensor of the knee joint. Essential for standing, walking, climbing stairs, and running. The rectus femoris also flexes the hip. |
| Clinical Significance | Femoral neck fractures are common in elderly patients with osteoporosis. Femoral shaft fractures result from high-energy trauma. The femoral head is susceptible to avascular necrosis. | Quadriceps tendon rupture prevents active knee extension. Vastus medialis oblique weakness contributes to patellar maltracking. Quadriceps atrophy commonly follows knee injuries and surgeries. |
| FMA ID | 24474 | 22428 |
Full structure pages
Femur
Os femoris
Longest and strongest bone in the human body, the femur bears the body's weight and anchors the powerful muscles of the thigh, transmitting weight from the hip to the tibia during standing and locomotion. It …
Quadriceps femoris
Musculus quadriceps femoris
A four-headed muscle group of the anterior thigh, the quadriceps femoris is the most powerful extensor of the knee and is central to standing, walking, climbing stairs, and running. Its four heads, the rectus femoris, …