There are ten known common knee injuries. From the research, doctors received more than 10 million injuries for treatment in 2010. This article will consider two types, anterior cruciate ligament knee, and medial Collateral ligament knee injuries.

1- Anterior Cruciate Ligament knee injuries

ACL runs diagonally down knee front. It provides stability to the joint; hence any injury to it is serious and might end up with surgery. These injuries mostly occur in sports, commonly injured ligaments. In the US annual report, the incidences were roughly sported to be 1 out of 3500 people. Mostly these injuries occur due to rotational force against direct hit to the knee among athletes. Most susceptible people are skiers, basketball, and soccer players. Although the research findings showed no age or gender bias, it has been reported that women are at high risk secondary to the magnitude of factors. An increase in valgus angulation of the knee may also cause ACL injuries. Though, it is yet to be proven. The most common ACL injuries are tear or sprain. These injuries are caused by many factors not limited to a sudden change in the movement direction, abnormal landing, jumping, and stopping rapidly.

ACL injuries are graded on a scale of 1 – 3. Grade 3 is a complete tear, while grade 1 is a mild sprain.

2- Medial Collateral ligament knee injuries

MCL is a flat band of connecting tissue from the femur’s epicondyle to the tibia’s condyle. Therefore, MCL injuries involve abrupt turning, twisting, or cutting. The direct injury also brings about MCL injuries. The ligament injury of the knee account for roughly 40% of the total knee injuries reported. Of this percentage, MCL injuries are seen to be common. Some of the signs of MCL injuries are acute and chronic medical pain. During the evaluation, imaging includes radiographs to examine fractures. MRI (magnetic resonance imaging) is preferred. Treatment is mostly conservative in Grade I-II unless it warrants surgery. This preference means grade III can either be treated conservatively or surgery.