In this type of fracture, the bone shatters into three or more pieces. This type of fracture often requires surgery to put the pieces of bone back together. The normally smooth joint surface may have also moved. In a displaced fracture, the broken ends of the bone are separated and do not line up correctly. Illustration and x-ray show a front (left) and side (right) view of a two-part fracture across the patella (transverse fracture) with slight displacement between the broken pieces of bone. In a stable fracture, the bones usually stay in place during healing. In this type of fracture the pieces of bone may remain in contact with each other or be separated by just a millimeter or two. Illustration and x-ray show a vertical, stable fracture of the patella. What are the different types of patellar fractures? Inability to straighten the knee or keep it extended in a straight leg raise.The most common symptoms of a patellar fracture are pain and swelling in the front of the knee. What are the symptoms of patellar fracture? For example, a sudden contraction of the quadriceps muscle in the knee can pull apart the patella. The patella can also be fractured indirectly. Receiving a sharp blow to the knee, such as might occur during a head-on vehicle collision if your kneecap is driven into the dashboard.Patellar fractures are most often caused by: This cartilage helps the bones glide easily along each other as you move your knee. The ends of the femur and the undersides of the patella are covered with a smooth substance called articular cartilage. It protects the knee and connects the muscles in the front of the thigh to the tibia. The patella is a small bone located in front of the knee joint - where the thighbone (femur) and shinbone (tibia) meet. For these more complicated fractures, surgery is needed to repair the kneecap. In most patellar fractures, however, the pieces of bone move out of place when the injury occurs. Some simple patellar fractures can be treated by wearing a cast or splint until the bone heals. A patellar fracture is a serious injury that can make it difficult or even impossible to straighten your knee or walk. Because the patella acts as a shield for your knee joint, it is more likely to break if you fall directly onto your knee or hit it against the dashboard in a car accident. We offer diagnosis and treatment in over 70 specialties and subspecialties, as well as programs, services, and support to help you stay well throughout your lifetime.Ī patellar fracture is a break in the patella, or kneecap, the small bone that sits at the front of your knee. BMC physicians are leaders in their fields with the most advanced medical technology at their fingertips and working alongside a highly skilled nursing and professional staff.
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