MediGence: Enabling Better Health Decisions

Knee pain is one of the most prevalent musculoskeletal experiences across all age ranges. Whether it is due to a sports injury, ageing, or accidental injury, knee problems can significantly limit mobility and decrease quality of life. One of the many causes of chronic knee pain, especially in young active people, is meniscus tears. When less invasive treatments such as activity modification, anti-inflammatories, and physical therapy fail to improve pain or restore function, surgery is explored.

One of the most advanced and effective surgical approaches is arthroscopic meniscectomy. This minimally invasive procedure to remove or trim the torn portion of the meniscus offers relief of symptoms with expedient return of knee function. This surgical treatment has introduced a paradigm shift in orthopaedic medicine, enabling faster recovery, reduced scarring, and improved outcomes compared to traditional open surgery.

What is a meniscus?

The meniscus is shaped like a crescent moon and consists of a piece of cartilage in the knee joint. It lies between the femur (thigh bone) and tibia (shin bone). Each knee has two menisci, the medial (inner) meniscus and the lateral (outer) meniscus. The meniscus serves as a cushion, a stabiliser, and a shock absorber to help the joint move effectively while stopping the bones from rubbing and wearing out.

Meniscus tears, one of the most common knee injuries, can occur when a sudden twisting movement happens, such as during heavy lifting, specific sports activities, or sometimes as a result of gradual degeneration with age. The typical symptoms include:

Knee joint pain
Knee swelling and stiffness
A popping sensation at the time of injury
Knee locking and catching
Limited range of motion

In some cases, minor tears can often heal with rest and supportive treatments without requiring surgery. When pain emerges or the knee's function is impaired, surgery may be warranted.

What is an Arthroscopic Meniscectomy?

Arthroscopic meniscectomy is a minimally invasive procedure that is used to remove a damaged portion of the meniscus while trying to maintain as much healthy tissue as possible. In contrast to traditional open knee surgery, an arthroscopic meniscectomy utilises small incisions and an arthroscope, a camera inserted into the knee. This helps the surgeon to visualise and work on the meniscus while minimising soft tissue trauma.

When are recommendations for an Arthroscopic Meniscectomy?

Not every meniscus tear requires surgery. Doctors tend to recommend an arthroscopic meniscectomy when:

Pain and swelling remain despite rest, analgesics, and physiotherapy.
The knee locks or catches frequently, making it challenging to keep moving.
The MRI confirms a complex or degenerative tear which cannot heal or resolve on its own.
The patient is active in sports or substance-use behaviours and would like a quicker recovery.
Conservative treatments neither restore the range of motion.

In younger patients, doctors may consider trying meniscus repair first as part of the sampling process. Repair means the cartilage was sewn back together. If the tear was in an area without a blood supply or if the damage was severe, a meniscectomy would then be recommended.

The Procedure of Arthroscopic Menisectomy

Preparation

Preparing for an arthroscopic meniscectomy is an important step which can prepare patients for a positive surgical experience and effective recovery. It includes:

Medical assessment: It typically includes blood work, imaging assessments (such as MRI or X-ray), and a physical examination.
Pre-surgical instructions: These may include avoiding blood-thinning medication, fasting for several hours before surgery, and arrangements for someone to assist after surgery.
Prehabilitation exercises: Strengthening exercises for the quadriceps and hamstrings a few weeks before surgery may help patients recover more quickly.

Doctors will also clarify what will happen during and after surgery so that patients will feel more confident.

Procedure

Arthroscopic meniscectomy is generally done as an outpatient procedure with spinal or general anesthesia, so patients can often go home the same day. The process is as follows:

Anesthesia: The patient is placed under anesthesia so that they feel no pain during the procedure.
Incisions: Two or three small incisions are made around the knee.
Arthroscope Insertion: The arthroscope, a camera, is inserted into the joint, and images are displayed in real-time on a video monitor.
Meniscus Trimming or Removal: Tissue is trimmed by a surgeon using specially designed instruments, while preserving the normal cartilage as much as possible.

Final Inspection: The surgeon checks for additional damage like ligament or cartilage injuries.

Closure: Sutures or adhesive strips to the incisions.

The meniscectomy procedure generally takes between 30 and 60 minutes.

Recovery

Recovery time can significantly differ depending on the age, health, and amount of meniscus removed. Timeline for Recovery

1st week: Most patients will have some swelling and some mild pain. Rest, ice packs, and elevation should be taken to control pain and swelling. Walking with crutches may also be needed for a few days.
2nd-4th weeks: This is when your physical therapy should begin, including gentle movements, continued strengthening, and restoring range of motion. Many people are walking without crutches by this time.
6th-8th weeks: Most people will be able to return to basic activities of daily living, such as driving and desk jobs (sitting lasts longer than 10 minutes). Swelling and stiffness should have improved significantly.
3rd-4th months: Athletes or individuals with physically demanding jobs can begin to return to their previous activity levels with guidance from physiotherapists, ensuring all injury precautions and proper body mechanics are being followed.

It is imperative to commit to physiotherapy to ensure a successful outcome. Strengthening the muscles surrounding a painful knee can help reduce the chances of re-injury.

Advantages of an arthroscopic meniscectomy

Arthroscopic meniscectomy is regarded as a very favorable treatment option for ongoing meniscus tears that have not recovered with conservative measures and have now reached surgical management. The advantages of arthroscopic meniscectomy are:

Minimally Invasive: There is less scarring and trauma to local tissues due to smaller incisions.
Quicker Recovery: Patients typically return to their daily activities more quickly than after open surgery.
Lower chance of Infection: Due to the smaller size of incisions.
Precision: The arthroscope enables surgeons to view the joint with precise detail and intervene with precision.
Less Pain and Swelling: Minimally invasive techniques result in less pain after surgery.

These benefits are a reason why it is a standard of care for meniscus injuries that need to be addressed surgically.

Risks and Complications

Although arthroscopic meniscectomy is safe and very frequently performed, like many surgical procedures, it still carries risks. In terms of complications, there are also possibilities:

Infection at the incision site
Blood clots in the legs
Stiffness or decreased range of motion
Ongoing knee pain or swelling
Increased risk of osteoarthritis in the long term, especially after total meniscectomy.

Patients can reduce risks by selecting skilled orthopedic surgeons, following post-surgical care instructions, and doing physiotherapy.

Long-Term Outlook After Meniscectomy

Most patients experience a significant reduction in knee pain and an improvement in mobility after undergoing arthroscopic meniscectomy. With adequate rehabilitation, individuals can typically return to sports, work-related duties, and other activities of daily living within a few months. It is still essential to take precautions for long-term knee health. Doctors will suggest:

Maintaining a healthy body weight
Regular low-impact exercises like swimming or cycling
Avoid sudden twisting or heavy impact forces
Continue physiotherapy exercises even after recovery

Patients who had a partial meniscectomy often do better in the long run than those who had a complete meniscectomy. The more meniscus tissue left intact, the lower the risk of developing arthritis.

Arthroscopic meniscectomy compared to other options

When compared to other options, arthroscopic meniscectomy also offers the advantage of a faster and more efficient recovery time.

Non-surgical treatments: These can suffice for minor tears, but are less effective for larger tears.
Meniscus Repair: This repair option is most desirable for young people with repairable tears; however, the recovery time is longer.
Total Meniscectomy: A last resort, as the joint may be more susceptible to damage long-term.

It should be noted that arthroscopic partial meniscectomy typically provides the most benefit in short-term pain relief and offers joint preservation over the long term.

Conclusion

Arthroscopic meniscectomy is a new minimally invasive option for individuals with ongoing knee symptoms due to meniscus tears. It allows for the removal of only the damaged part of the cartilage, which is responsible for the patient's symptoms, resulting in improved mobility, less pain, and an enhanced quality of life. It has become the treatment of choice worldwide for individuals with meniscus injuries due to the relative amount of tissue removed, the tendency towards smaller incisions and quicker recovery time, and decreased risks.

With any surgery or procedure, there are risks. However, patient selection, surgical technique, and adherence to rehabilitation and recovery can result in excellent outcomes. Arthroscopic meniscectomy can provide a safe and effective solution for returning athletes to sports or individuals seeking to regain pain-free mobility, improve knee health, and achieve long-term relief from knee symptoms.