Dealing with joint pain can cause major disruptions to your day. Sign up and learn how to better take care of your body. Click below and just hit send! Common Knee Injuries. National Library of Medicine: MedlinePlus. Meniscus tears—aftercare. Synovial Chondromatosis. National Institute of Health: News in Health. Knee Injuries. J Am Acad Orthop Surg. Your Privacy Rights. To change or withdraw your consent choices for VerywellHealth.
At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. These choices will be signaled globally to our partners and will not affect browsing data. We and our partners process data to: Actively scan device characteristics for identification.
I Accept Show Purposes. Table of Contents View All. Table of Contents. Bones Around the Knee. Cartilage of the Knee. Ligaments of the Knee. Muscles and Tendons. Joint Capsule and Lining.
The knee is the most commonly injured joint by adolescent athletes with an estimated 2. The knee is a hinge joint that is responsible for weight-bearing and movement.
It consists of bones, meniscus, ligaments, and tendons. The femur thigh bone , tibia shin bone , and patella kneecap make up the bones of the knee. The knee joint keeps these bones in place. The patella is a small, triangle shaped bone that sits at the front of the knee, within the quadriceps muscle. It is lined with the thickest layer of cartilage in the body because it endures a great deal of force.
The menisci also contain nerves that help improve balance and stability and ensure the correct weight distribution between the femur and tibia. Articular cartilage: found on the femur, the top of the tibia, and the back of the patella; it is a thin, shiny layer of cartilage. It acts as a shock absorber and helps bones move smoothly over one another. Ligaments are tough and fibrous tissues; they act like strong ropes to connect bones to other bones, preventing too much motion and promoting stability.
The knee has four:. These tough bands of soft tissue provide stability to the joint. They are similar to ligaments, but instead of linking bone to bone, they connect bone to muscle. The largest tendon in the knee is the patellar tendon, which covers the kneecap, runs up the thigh, and attaches to the quadriceps. Although they are not technically part of the knee joint, the hamstrings and quadriceps are the muscles that strengthen the leg and help flex the knee.
The quadriceps are four muscles that straighten the knee. The hamstrings are three muscles at the back of the thigh that bend the knee. The gluteal muscles — gluteus medius and minimus — also known as the glutes are in the buttocks; these are also important in positioning the knee.
Stand up for a moment and keep your legs perfectly straight—this is extension. Video footage from Muscle Premium. The angle is around degrees. Now, stand on one leg and lift the other until it's bent at the knee—this is flexion. And now I'm going to give my chiropractor's blood pressure a rest and put both my feet on the floor.
Be sure to subscribe to the Visible Body Blog for more anatomy awesomeness! Are you a professor or know someone who is? We have awesome visuals and resources for your anatomy and physiology course! Learn more here. When you select "Subscribe" you will start receiving our email newsletter. Use the links at the bottom of any email to manage the type of emails you receive or to unsubscribe.
See our privacy policy for additional details. Welcome to the Visible Body Blog! With over 90 Rehab Clinicians trained in providing you with the highest quality of orthopedic care. For an appointment, please call To schedule an appointment for physical therapy at one of the 12 JOI Rehab Centers, please call JOI MD's now offer quick fracture care. Make an appointment by calling JOI , schedule online, or click the link below The tibia shin bone.
The patella knee cap. Lateral Knee Anatomy The femur and the tibia are the main movers of the joint to allow for the hinge motion. Lateral collateral ligament LCL : Is on the outside of the knee.
An anterior cruciate ligament ACL : Inside of the knee and crosses to the front. A posterior cruciate ligament PCL : Inside of the knee and crosses to the back. Cartilage Of The Knee Joint There are two main types of cartilage in knee anatomy: articular cartilage and the meniscus. Articular cartilage covers the bones' ends and allows for the bones to slide and glide on each other without friction. This is the stuff you need to keep from getting the creaking and cracking of the joints.
When this starts to wear down, arthritis will set in. Sometimes this cartilage is damaged with an ACL tear. The amount of trauma from the ACL injury can lesions to the cartilage of the joint or bones of the knee. This can be addressed during the surgical procedure.
0コメント