split your cost monthly with Klarna

Wave goodbye to pain
Wave goodbye to pain

Knee Pain

Knee Pain: Causes, Symptoms & Pain Relief

Why does my knee hurt when I bend it?

Knee pain is a common complaint that many people suffer from. Although the prevalence increases as we get older, knee pain can affect people of all ages. The causes of knee pain may be injuries to ligaments or cartilage, or pain may stem from medical conditions like arthritis or gout.

If you’ve been asking “Why does my knee hurt when I bend it?” then follow along with our knee pain article to discover causes, symptoms and methods of relieving knee pain at home.

Knee pain affects approximately 25% of adults ¹

‘Knee pain’ is a catch-all term that encompasses lots of different diagnoses and conditions. But when being diagnosed with knee pain, lots of experts find it helpful to locate the type of injury or condition by pinpointing exactly where in the knee the pain is coming from.

Front knee pain causes – Also called anterior knee pain, this may include pain below the kneecap (patella), either side of it or pain behind the knee.

Front knee pain is commonly caused by a dislocation or fracture, and frequently it’s the result of a sports injury. Keen sportspeople may damage their knee in a fall, or simply find that it’s painful from overuse.

Back of knee pain causes – This is also called posterior knee pain, and as well as pain might mean swelling at the back of the knee that extends to the calf.

The most common causes for this type of pain are more likely to be joint related – perhaps osteoarthritis or rheumatoid arthritis, inflammation, or an infection in the joints. Or an obvious knee injury like torn ligaments or torn cartilage.

Inner knee pain causes – Is also called medial knee pain and refers to pain on the side of the knee that is nearest to the middle or inside of the body.

Similar to front knee pain, these types of injuries are often suffered by people who play sports. Footballers, skiers or those that twist, and pivot suddenly are at risk. As are those who might overuse their knees, like cyclists or breaststroke swimmers.

Outer knee pain causes – Is also called lateral knee pain and is a type of pain that occurs on the outside of the leg and may run up the thigh.

This is another type of pain commonly found among sportspeople; it is prevalent in distance runners and cyclists who may be guilty of overusing their knees – particularly as they get older. If you’re still wondering “why does my knee hurt when I bend it?”, consult your doctor for diagnosis.

Symptoms of Knee Pain​

The exact location and severity of knee pain will differ depending on the specific knee pain causes, but some, or all of the following symptoms will usually occur:

  • Swelling and stiffness around the knee
  • Knee feeling weak or unstable
  • Redness and warmth to the touch
  • Popping or crunching noises
  • The inability to fully straighten the knee
  • Pain when knee is bent

Why does my knee hurt when I bend it?

Knees that become more painful when bent of flexed usually have two underlying causes:

  1. Knee pain caused by an injury. Here the cause of knee pain is easy to attribute. It might be from a sprain; ligament or cartilage damage, the result of overstretching or twisting during exercise such as running. Or from tendonitis brought on by repetitive running or jumping. A kneecap might be painfully dislocated after a collision or a sudden change in direction.
  2. Knee pain with no obvious injury. The causes here are less obvious, but no less uncomfortable. Unexplained pain and swelling in the knee may be caused by a form of arthritis, and hot, shooting pain by gout. Warmth and/or bruising might be a sign of bursitis (inflammation of the fluid that cushions your joints) or bleeding in the joints.

Discover BioWaveGO 

Start taking control of your knee pain. Discover BioWaveGO’s effective pain blocking technology that can help you recover faster and keep moving. 

    Your Cart
    Your cart is emptyReturn to Shop