Healthy knees are central to facilitating the ability to stand up, sit down, walk and run. Injuries to the knee can limit or decrease mobility. Puget Sound Orthopaedics (PSO) knee surgeons have performed many procedures treating conditions typically caused by arthritis, sprains, strains and fractures. Whether treatment consists of surgical or nonsurgical options, PSO surgeons are committed to helping patients get moving again.
The knee is a complex joint that bends and straightens like a hinge. There are three (3) bones that make up the knee: the femur (thighbone), which is the strongest and longest bone in the body, tibia (shinbone) and patella (kneecap). While it does not directly affect the knee’s movement, the smaller fibula (calf bone) is connected by ligaments to the tibia and supports the tibia’s function.
For the knee to function properly, all of the bones must work in tandem with four (4) primary ligaments that hold the three bones together. The medial (MCL) and lateral collateral (LCL) ligaments control the sideways movement of the knee. The anterior cruciate (ACL) and posterior cruciate (PCL) ligaments control the back and forth motion of the knee. In addition two (2) menisci act as “shock absorbers.” The menisci are made up of cartilage and help cushion and stabilize the knee joint.
INJURIES TO THE KNEE
Injuries to the knee often cause a sensation that feels like the knee is giving way, also known as instability. All three bones of the knee are prone to fracture but the kneecap breaks more often because it acts as a shield for the knee joint. The kneecap can become unstable or dislocate if it slips out of its v-shaped groove in the femur.
Another type of fracture involving a knee bone is proximal tibia (shinbone) fractures, where the wider upper part of the bone that is a part of the knee joint breaks. If the break extends into the knee joint then the fracture is called tibial plateau fracture.
While arthritis can take many forms, the condition generally is inflammation of the joints. One of the prevalent types of arthritis is osteoarthritis (sometimes referred to as “wear and tear” and typically is found in older people). Osteoarthritis, rheumatoid arthritis, and posttraumatic arthritis are common types of arthritis found in the knee.
Athletes who play high demand sports, such as soccer, football and basketball are subject to injury to one of the four cruciate ligaments. A quick change in directional movement or an awkward landing from a jump can cause a tear. A blow to the front of the knee is the typical cause of a tear occurring in the PCL. Any force that pushes the knee sideways can result in an injury to the MCL or LCL.
COMMON KNEE CONDITIONS
Anterior cruciate ligament (ACL) tear – when the ligament is sprained or torn from a sudden stop or slowing down while running, awkwardly landing from a jump, rapidly changing direction or direct contact or collision
Meniscus tears – tearing of the rubbery cartilage in the knee
WHEN TO SEE A KNEE SPECIALIST
Seek medical treatment from a knee specialist if you are experiencing any of the following symptoms:
Pain or swelling in the knee
Feeling like the knee is “catching” or “locking up”
A “popping” noise associated with the time of injury
An inability to put weight on the knee or move the knee
Your doctor will discuss all treatment options with you. The best treatment for your injury or condition will be determined in combination with your overall health.
There are several nonoperative treatment options for knee pain. These might include physical therapy, pain management in the form of over-the-counter or prescribed medications and/or anti-inflammatories or immobilizing the afflicted knee with a brace. If surgery is necessary, PSO knee specialists can perform a wide variety of procedures ranging from minimally invasive to major reconstruction such as knee joint replacement.
A total knee replacement is the procedure performed when a knee is damaged beyond repair. Major injuries and various diseases can damage the knee to this point where the best treatment option is to replace the knee joint. The goal of a knee replacement is to reduce pain and improve function and mobility of the […]
An ACL tear can be either a sprain or a rupture of the anterior cruciate ligament. This key ligament holds together the femur and tibia and is pivotal in providing motion for the leg. In particular this ligament provides stability in the knee and with other ligaments inside, outside and within the knee. These different […]
The complex function of the knee relies on many bones and ligaments working properly. Injured or sprained ligaments can create instability since the ligaments control the backwards, forwards and sideways motion of the knee. When the knee is forced sideways it can rupture the different soft tissues that provide support and stability. Swelling, pain and […]
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