Knee Injuries: Symptoms, causes, diagnosis and treatment.

A knee sprain means that one of the ligaments in the knee joint has been injured. There are four main ligaments that contribute to the stability of the knee . Also, there are many smaller ligaments that can cause pain after injury. Stretching and stretching are often confused. A sprain is a ligament injury and a sprain is a muscle injury.

Ligaments are structures that connect two bones. Ligaments are important for maintaining joint stability while allowing the joint to move. In the case of the knee, the ligaments allow the knee joint to bend back and forth, but control excessive movement.

The collateral ligaments of the knee prevent excessive side-to-side movement, while the cruciate ligaments are important for both rotation and anterior / posterior stability.

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Knee Sprain Symptoms

The most common symptoms of a knee sprain are pain and swelling. Symptoms usually begin immediately after a knee injury that causes ligament damage. Sometimes these symptoms get worse during the first 48 hours and then gradually disappear, depending on the severity of the injury.

The most common symptoms of a knee sprain include:

  • Knee pain
  • Swelling of the knee
  • Joint stiffness
  • Instability / loss / deformation


A sprained knee can be caused by a variety of injuries. Sometimes injuries result from sports. In athletics, knee sprains can result from both contact injuries and non-contact events.

Knee sprains often occur after falls and other injuries that can occur at home or in the workplace. Knee sprains are also common after car accidents.

These injuries can lead to other common knee problems, such as fractures and dislocations. For this reason, it is important that people with symptoms of a knee sprain be evaluated by a healthcare professional to determine if further testing is needed.


Assessing who has injured the knee involves testing various ligaments that can be damaged as a result of a strained knee. The tests have certain techniques that can be used to isolate each of these ligaments to help your healthcare provider determine the exact cause of your discomfort.

Often, specialized tests such as X-rays and magnetic resonance imaging (MRI) are performed if a more serious injury is suspected or the diagnosis is unclear.

Saying someone has a knee sprain is not a very helpful diagnosis for two reasons:

  • It does not tell you which ligament is damaged. This is important because different links are treated differently. For example, anterior cruciate ligament (ACL) injuries often require surgical reconstruction. On the other hand, medial collateral ligament (MCL) injuries rarely require surgery.
  • It does not tell you how badly the ligament is damaged. The reason this is important is that minor injuries generally require little treatment. More serious injuries may require more serious treatment, rehabilitation, and possibly surgery.

Despite this, patients are often told that they have a knee sprain. If you have been diagnosed with a knee sprain, try to learn more. Find out which ligaments are damaged so you can learn more about the types of treatment and rehabilitation needed.

Watch out

Often, knee ligament injuries are classified to determine the severity of the injury. The degree of injury refers to the degree of damage to the ligament. Typically, most healthcare providers give ratings on a scale of 1 to 3.


Ligament rupture is of the following degrees:

  • Grade I : Minor trauma that is likely to heal after changing activity and rest patterns for 1 to 2 weeks.
  • Grade II : Injury of moderate severity with partial tear of the ligament, which will require severe restrictions in activity and may take 4 to 6 weeks to recover.
  • III degree : Complete or almost complete tear of the ligament. Depending on the damaged ligament, longer surgery or rehabilitation may be required.

These general classifications are somewhat arbitrary, and the truth is that ligaments can be damaged in many ways, from no damage to complete tear. Therefore, these categories are primarily used to provide athletes with an understanding of the severity of the injury and the timetable for the expected return to their sporting activities.

As noted, the main problem with naming a knee sprain is that the words convey little useful information. Knowing the specific ligament that is damaged will help you and your doctor work together to find the best treatment so that you can return to normal activities as soon as possible.

Get the word of drug information

A knee sprain means that one or more of the ligaments that surround the joint have been injured. These ligaments are critical to knee stability, and injuries may require specialized treatment.

If a knee sprain is suspected, a comprehensive examination and specialized tests can be performed to determine the extent of the injury and choose the best treatment.

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