In full general, pain behind the knee is one of the more challenging musculoskeletal problems. There are then many possible causes – muscle tear, tendon, nerve damage, and blood clots. Similar most other problems, the key to managing information technology correctly is an early and authentic diagnosis. So, what are the causes of pain behind the knee, and how do sort out what is causing the problem?

What's behind the knee?

The dorsum of the knee has complicated beefcake.

As well as the human knee that sits in the middle, there are muscles from the thigh and calf that pass through this area. Firstly, the large hamstring muscles start from the pelvis and pass across the knee to attach to the lower leg basic. In addition, the large dogie muscles start at the bottom part of the thigh and cross the knee to form the large Achilles tendon.

Finally, there are important nerves and blood vessels that cross the dorsum of the articulatio genus to supply the lower leg and pes.

Common causes of pain backside knee

Where practise we start with making an accurate diagnosis?

Generally, most doctors utilise a methodological process to confirm or dominion out causes. Firstly, we perform a thorough assessment to test the joints, ligaments, and tendons that pass across the dorsum of the knee. Then, we consider imaging to confirm our thinking. X-rays often pick up major arthritis in the human knee. MRI tin can detect soft tissue problems such every bit tendonitis or muscle tear. Occasionally, we perform other tests such equally blood, ultrasound, or nerve studies depending on the presentation.

Generally, the more mutual causes of pain backside the knee include:

Arthritis of the knee causing pain behind knee

Osteoarthritis is a common cause of pain backside the knee. Typically, arthritis causes bone spurs leading to inflammation at the back of the knee. Oft, you lot feel tight and restricted in the motion of the genu joint.

Generally, the best course of handling for knee arthritis is exercise and load direction. Also, wearing a knee joint sleeve tin help. Occasionally, we utilize injection therapy to aid with arthritis such equally cortisone or platelet-rich plasma.

Meniscal tears

Meniscal or cartilage tears of the knee can cause hurting behind the genu – unremarkably more than on the within or outside. Near of these tears are degenerative. Sometimes, all the same, the 'root' of the meniscus tears, where the meniscus attaches to the eye of the knee joint, tears. In these cases, the meniscus stops acting every bit a true daze absorber leading to increased stress on the knee joint joint.

Primarily, treatment of degenerative tears including degenerative 'root' tears is conservative. Exceptions include meniscal tears in younger patients later on trauma, root tears, or any knee that causes mechanical symptoms such as locking or giving way.

Baker's cyst

Baker's cyst

A Baker's cyst is a drove of fluid at the back of the knee. This cyst arises from the articulatio genus joint, so swelling of the genu joint will brand the cyst bigger. By and large, bigger cysts put pressure on the joints, muscles, and fretfulness leading to pain.

Typically, a Bakery's cyst is confirmed by an ultrasound. Occasionally for cysts that are painful, we drain the cysts using a needle under ultrasound.

Tendon and musculus injuries causing pain backside knee joint

Tendon injuries often occur in runners due to overload. The tendons most probable to be affected include the hamstring on the within (semimembranosus) or outside (biceps femoris). Rarely, a small tendon called the popliteus wrapping around the outside of the knee articulation can become swollen and painful.

In addition, hamstring muscle tears can occur close to the exterior of the human knee. Normally, these tears occur about 5cm above the human knee. It is important to define the exact location of the tear, as location determines the time to return to sport.

Finally, a pulled dogie muscle well-nigh the knee tin can likewise cause hurting in this area.

Nerve damage

Pinching of fretfulness in the low back (sciatica) or the buttock (piriformis syndrome) can cause pain radiating down the leg and into the back of the articulatio genus. However, pain isolated to the back of the knee is not usually associated with nerve damage.

DVT (deep venous thrombosis)

Similar to nerve harm, it is rare for deep venous thrombosis or DVT to cause pain at the back of the knee. Usually, pain from DVT extends to the dogie and inner thigh. Frequently, the ankle and calf are swollen. Some people have an increased adventure of DVT such as obesity, cancer, recent surgery, and long booty travel.

Common questions related to pain behind the genu

Why is the back of my knee swollen?

By and large, swelling at the back of the knee is due to a Baker'south cyst. However, Baker'southward cysts are not usually painful. If you experience severe pain and swelling behind the knee, then yous must encounter your doctor. Sometimes, large Baker'south cysts tin can become painful. Other causes include DVT or popliteal aneurysms.

What causes pain behind the articulatio genus and in the calf?

If you become pain in the knee and calf, then you likely take a problem unrelated to the knee joint. Possibilities include nervus pain from the lumbar spine or piriformis or DVT.

MRI of my knee didn't show annihilation. What does that mean?

A normal MRI scan doesn't necessarily rule out all problems in the knee articulation. Yet, we would consider other causes such as DVT or hurting from the spine.

Concluding word from Sportdoctorlondon about pain behind the knee

Hurting behind the knee is not straightforward. Some conditions tin can be life-threatening such every bit a DVT. Other conditions may need further investigations and treatments. We suggest yous encounter a sports medicine consultant to get an accurate diagnosis and management programme.

Related conditions:

  • Torn meniscus
  • Meniscal injections
  • Bakery's cyst
  • Injections for human knee arthritis
  • Pulled calf musculus
  • Piriformis syndrome

Dr. Masci is a specialist sport doctor in London.

He specialises in muscle, tendon and joint injuries.