Knee hit, not red or swollen but very painful
Generally, if the knee is injured and becomes painful without redness or swelling, it may be caused by muscle strain, synovitis of the knee joint, meniscus damage, etc. Specific analyses are as follows:
1. Muscle Injury
Muscle injuries such as muscle strains or soreness may lead to pain in the knee after impact, even without visible redness or swelling. These are mostly caused by sports-related injuries or external impacts. In such cases, patients can take medications like ibuprofen capsules or diclofenac sodium sustained-release tablets under a doctor's guidance.
2. Knee Joint Synovitis
Knee joint synovitis is a type of knee disorder that may cause pain upon impact without redness or swelling, usually resulting from overuse, infection, or similar causes. In such cases, patients may use medications such as loxoprofen sodium tablets or compound lidocaine cream as advised by a physician.
3. Meniscus Damage
A knee bump may have already caused meniscus injury, leading to internal knee pain. However, the damage cannot be seen with the naked eye and may be accompanied by symptoms such as swelling and stiffness. If the condition is not severe, symptoms can be relieved with ice packs and elevating the affected limb. If the injury is serious, medical treatment at a hospital may be required, including procedures such as meniscus repair or partial meniscectomy.
In addition, similar symptoms may also be related to rheumatoid arthritis, bone cracks, or fractures. It is recommended that patients seek timely evaluation at a qualified medical facility when experiencing the above symptoms, and receive appropriate treatment to prevent worsening of the condition.