A patellar fracture is a break in the patella, or kneecap, the small bone that sits at the front of your knee. A patellar fracture is a serious injury that can make it difficult or even impossible to straighten your knee or walk.| orthoinfo.aaos.org
The posterior cruciate ligament is in the back of the knee. It is one of several ligaments that connect the thighbone to the shinbone. An injury to the posterior cruciate ligament requires a powerful force. Injuries are often due to a blow to the knee while it is bent.| orthoinfo.aaos.org
Small tears of the tendon can make it difficult to walk and participate in other daily activities. A large tear of the patellar tendon is a disabling injury. It usually requires surgery and physical therapy to regain full knee function.| orthoinfo.aaos.org
Meniscus tears are among the most common knee injuries. Athletes, particularly those who play contact sports, are at risk for meniscus tears. However, anyone at any age can tear a meniscus. When people talk about torn cartilage in the knee, they are usually referring to a torn meniscus.| orthoinfo.aaos.org