MUSCLE PHYSIOLOGY

Detailed explanation-1: -A swollen knee occurs when excess fluid collects in or around your knee joint. Health care providers might refer to this condition as an effusion (uh-FU-zhun) in your knee joint. A swollen knee may be the result of trauma, overuse injuries, or an underlying disease or condition.

Detailed explanation-2: -Doctors sometimes refer to knee swelling as “knee effusion.” Others may refer to it as “water on the knee.” Knee swelling can result from an injury, chronic overuse, or a disease.

Detailed explanation-3: -What Does Swelling Above The Knee Mean? Swelling from within the knee joint can cause the area above the knee to appear swollen. This can be from several different injuries. It can be from injuries to the ACL, meniscus or even from a strain or tear to the patellar tendon or quad.

Detailed explanation-4: -According to Dr. Allen, swelling that comes on suddenly is usually caused by blood trapped in the joint; it typically occurs within three to four hours of the injury. If the injury is a torn ACL, a small blood vessel is also torn-and when that happens, the swelling can also be significant.