Infections:
When bacterial, viral or fungal infections reach the knee joint, inflammation and synovitis can occur inside the joint.
Trauma and Injuries:
A traumatic injury to the knee joint can cause inflammation and synovitis within the joint.
Crystal Arthropathies:
Crystal formations such as uric acid crystals (gout) or calcium pyrophosphate crystals (pseudogout) can cause inflammation inside the knee joint.

Non-Surgical Treatment Methods:

Medication Therapy:
Painkillers, anti-inflammatory drugs or corticosteroids prescribed by a doctor can be used.
Physical Therapy:
Physical therapy programs can be applied to increase joint mobility and strength.
Rest and Rest:
Resting the joint and avoiding excessive activities can support the healing process.
Cold or Hot Application:
Cold compresses or warm applications can relieve inflammation and pain.
Joint Aspiration and Injections:
Joint aspiration can be done to remove excess fluid that has accumulated in the joint. Corticosteroid or hyaluronic acid injections may also be used.

Surgical Treatment Methods:
Arthroscopic Surgery:
Arthroscopy can be used to remove inflammatory tissue or fluid within the joint and to examine the joint.
Synovectomy:
A surgical procedure to remove inflammatory synovial tissue within the joint.
Joint Replacement (Total Knee Arthroplasty):
In cases of severe osteoarthritis or in cases that do not respond to other treatments, the knee joint can be replaced with a prosthesis.