Knee Swelling 3 Months After Meniscus Surgery: When to Worry

What is torn meniscus surgery?

Surgery for a torn meniscus is typically performed arthroscopically and falls into two main categories:

• Partial meniscectomy:

  • For a partial meniscectomy, the surgeon will trim and remove the torn portion of the meniscus.

  • This is usually performed if the meniscal tear damage is extensive.

  • Meniscus tears in the inner part of the meniscus, which lacks blood flow, are less likely to heal with repair and more often require partial meniscectomy.

• Meniscus repair:

  • For a meniscus repair, the torn meniscus is stitched back together.

  • This is usually only possible if the tear is in the outer portion where there is sufficient blood supply to support healing.

The choice of procedure depends on the location and type of meniscal tear. Other factors, such as the extent of the meniscus tear, and patient factors, like age or activity level, are also considered.

Is it normal to have swelling 3 months after knee replacement?

It is not uncommon to experience some degree of swelling three months after meniscus surgery. Mild to moderate swelling can persist from 4 to 6 weeks as part of the body’s natural healing process, especially following a meniscus repair.

However, different factors, such as scar tissue, infection, arthritis, or new injuries, can prolong the swelling to three months. It is important to note that the swelling should gradually decrease over time.

When is swelling normal?

• Residual inflammation:

  • The meniscus or surrounding tissue may not have fully recovered. Thus, some swelling is expected as the knee continues to heal.

• Increased activity:

  • Swelling may increase temporarily after physical therapy or resuming daily activities.

• Scar tissue development:

  • The formation of scar tissue at the surgical site can cause mild swelling.

• Sensation of fluid:

  • A feeling of fluid in the knee is common during recovery due to fluid accumulation during surgery. This is usually harmless.

When is swelling a red flag?

Seek medical attention if you experience:

• Persistent or worsening swelling that does not improve with rest, ice, and elevation.

• Severe pain unrelieved by medication.

• Redness, warmth, or discharge from the incision, which may indicate infection.

• Fever in combination with knee swelling.

• Discolouration or tenderness in the leg, which could suggest a blood clot.

• Difficulty moving the knee or a sensation of locking or giving way.

If you experience any of the above symptoms, please consult a medical professional to discuss your symptoms and possible remedies. Request an appointment with Thomson Medical today.

Factors causing knee swelling 3 months after meniscus surgery

• Incomplete healing from meniscus surgery:

  • The meniscus and surrounding tissues may not have fully healed, especially after a repair, leading to ongoing inflammation and swelling.

• Re-injury leading to pain after meniscus surgery:

  • Any new trauma or excess overload to the knee could be a source of swelling and pain after meniscus surgery.

  • Thus, returning to activity too quickly or not following rehabilitation protocols strictly can cause re-injury by accident.

• Infection:

  • Infections can cause inflammation, swelling, redness, heat, discharge, and fever.

• Blood clots:

  • Blood clots (deep vein thrombosis) can develop at the site of surgery and can cause swelling, pain, and discolouration in the leg.

If you suspect your knee swelling is caused by any of the above factors, please consult a specialist on possible diagnoses and treatments. Request an appointment with Thomson Medical today.

Therapies to prevent knee swelling 3 months post-meniscus surgery

A personalised treatment plan can optimise your recovery. This may be in the form of medicine, physiotherapy, or some lifestyle change depending on your current health conditions. Some examples are:

• Rest, ice, compression, and elevation (RICE):

  • Continue these basic conservative measures as needed.

• Physical therapy:

  • Guided rehabilitation helps restore strength and mobility while minimising swelling.

  • Sticking to a planned rehabilitation schedule is crucial for recovery after meniscus surgery.

  • Knee function, strength, and flexibility is progressively restored by the frequent rehab sessions

• Avoid overexertion:

  • Adapt certain exercises to your specific condition and recovery stage to aid in your recovery.

  • However, it is best to gradually increase activity levels to avoid overexertion and re-injury.

• Monitor for complications:

  • Be alert to signs of infection or blood clots.

• Follow your surgeon’s advice:

  • A professional's advice is important for the proper recovery following meniscus surgery.

  • Adhere to all post-operative instructions and attend follow-up appointments.

FAQ

How long should my knee hurt after meniscus surgery?

Some pain is normal for several weeks to months, especially after a meniscus repair. The pain should gradually decrease as healing progresses.

How do I know if my meniscus repair failed?

Signs of a failed repair include persistent or worsening pain, swelling, locking, or a sensation that the knee is giving way. Sudden clunking or locking that does not resolve within 24 hours warrants immediate medical attention.

Can a meniscus be repaired twice?

In some cases, a re-tear can be repaired again, depending on the location and severity of the new injury, as well as the overall condition of the meniscus.

What to expect 5 months after knee surgery?

By five months, most patients experience significant improvement in pain and mobility. Some mild swelling or stiffness may persist, but you should be able to perform most daily activities. Full recovery can take up to 6 months or longer for complex repairs.

When can I fully bend my knee after meniscus surgery?

Range of motion improves gradually. Full bending typically returns within 3–6 months, depending on the type of surgery and adherence to rehabilitation protocols.

How long does tightness last after knee surgery?

Tightness can last for several months but should improve with ongoing physiotherapy and stretching exercises. Persistent tightness beyond 6 months should be evaluated by your surgeon.

The information provided is intended for general guidance only and should not be considered medical advice. For personalised recommendations and tailored advice, please consult a specialist at Thomson Medical. Request an appointment with Thomson Medical today.