Conditions & Treatments
The knee is the body’s largest joint. It consists of the femur and the tibia, which meet to form a hinge joint. The joint is protected by the patella (kneecap), and cushioned by articular cartilage that covers the ends of these bones.
When knee pain does not subside and persists for more than a few days, or when the knee is difficult to move or swollen, it is important to consult one of the Board Certified Orthopedic Knee Specialists at OrthoNeuro to find the underlying cause of the pain.
MCL & PCL Tear
The MCL (medial cruciate ligament) and PCL (posterior cruciate ligament) are two of the four ligaments (ACL, MCL, PCL, and LCL) that provide stability to the knee as well as prevent the knee from extending too far in a specific direction. The MCL and/or PCL are often injured during sports or activities when the knee is forcefully twisted to one side or is pushed back due to a direct blow to the knee. The MCL and/or PCL can also be injured when there is a simultaneous injury to the ACL.
If you have an MCL or PCL injury the symptoms can include:
- Pain in the knee
- A feeling of “catching” or “buckling” of the knee
- An audible “pop” at the moment of injury
Stress fractures have three main causes.
Cause 1. When the muscles are fatigued and can no longer absorb stress. This stress is then transferred into the bones which causes tiny cracks to form in the bone.
Cause 2. Repetitive impact while using improper footwear or form.
Cause 3. Weakened bones due to osteoporosis.
If you have a stress fracture the most common symptom is pain or sensitivity in a specific area during activity.
Patella Tendon Tear
Many patella tendon tears occur over time as the result of small micro tears in the tendon due to overuse or repetitive strain. This is known as patella tendonitis and is also commonly referred to as Runner’s Knee or Jumper’s Knee.
Muscle & Tendon Strains
Sprains and strains are very common injuries that share very common causes and symptoms. However, they both involve different parts of the body.
A sprain occurs when ligaments are stretched or torn beyond their normal range. Ligaments are tough bands of fibrous tissue that connect bone to bone. Sprains occur in the ankles, knees, wrists, and thumbs. The ankle is the most common joint to be sprained.
A strain occurs when a muscle or tendon is stretched or torn beyond its normal range. A tendon is a fibrous cord of tissue that connects muscles to bones. The lower back and hamstrings are the most common muscles to be strained.
Robotic Assisted Total Knee Replacement
More than 600,000 total knee replacement procedures are performed each year in the U.S. and more than 90% of these patients experience dramatic relief in knee pain and are better able to perform common activities.1 The NAVIO Surgical System delivers robotics-assisted tools designed to help tailor your knee replacement surgery to the unique shape and motion of your knee.
If you have a joint dislocation the symptoms can include:
- Pain in the joint
- A visible deformity in the joint
- Reduced mobility of the joint
- Numbness or tingling around the joint
Hamstrings are the strong muscles and tissue fibers that begin in the pelvis and run through the thigh and into the knee where they are attached to the bone.
There are three hamstring muscles:
- Biceps femoris
Most hamstring injuries occur as the result of muscle overload where the hamstring is stretched beyond its capacity during running or quickly changing direction. In other instances, the hamstrings can be damaged due to small micro tears that do not have time to properly heal which causes them to grow larger. An injury to the hamstring can be either a strain, a partial tear or a complete tear away from the bone (avulsion).
If you have a hamstring injury the symptoms can include:
- A feeling of “pulling” or “tearing” at the back of the leg
- Bruising or swelling
- Weakness in the leg
Partial Knee Replacement
This procedure differs from a Total Knee Replacement in that only the damaged bones of the knee are removed and replaced. In many cases, arthritis will only affect one side (also known as a “compartment”) of the knee and therefore only that compartment needs to be replaced and the undamaged portion of the knee can remain intact.
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Total Knee Replacement
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Robotic Assisted Partial Knee Replacement
For people suffering from knee pain caused by osteoarthritis, whose damage is limited to a single compartment or area of the knee, partial knee replacement may be an option because it preserves healthy bone and ligaments while replacing the damaged area.1, 2 The NAVIO Surgical System uses robotics-assisted technology to help tailor partial knee replacement procedures to the unique shape and motion of each patient’s knee anatomy.
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