A meniscus tear is one of the most common knee injuries seen by an orthopaedic surgeon. If you've recently been diagnosed with one, you may have heard that there are two main surgical options: removing the torn piece (partial meniscectomy) or repairing the tear with stitches (meniscus repair).
Whenever possible, modern orthopaedic surgery aims to preserve the meniscus rather than remove it. This represents a major change from the past, when many tears were routinely trimmed away. We now understand that the meniscus plays a vital role in protecting the knee, and preserving it can help maintain knee function and reduce the long-term risk of arthritis.
Why Is the Meniscus So Important?
The knee has two menisci—crescent-shaped pieces of cartilage that act as shock absorbers between the femur and tibia. They help spread load across the joint, improve stability, protect the articular cartilage and contribute to normal knee movement.
Laboratory studies in human cadaver knees show that removing meniscal tissue reduces contact area and increases pressure on the remaining joint surfaces. Study of meniscectomy, repair and knee contact pressure
For this reason, the modern philosophy is simple:
If the meniscus can be repaired, it is usually preferable to repair it rather than remove it.
Can Every Meniscus Tear Be Repaired?
Unfortunately, no.
Whether a meniscus repair is possible depends on several factors, including:
- The type of tear
- Where the tear is located
- The quality of the meniscal tissue
- Your age and activity level
- How long ago the injury occurred
- Whether other injuries, such as an ACL tear, are present
Vertical or longitudinal tears near the outer edge of the meniscus often have favourable healing potential because this region has a better blood supply. Tear pattern, tissue quality and other patient factors also matter. Systematic review of healing assessed by arthroscopy
What Is a Bucket Handle Tear?
One of the most common tears suitable for repair is a bucket handle tear.
In this injury, a large section of the meniscus tears and flips into the middle of the knee, rather like the handle of a bucket flipping from one side to the other.
Patients often notice:
- A sudden inability to fully straighten the knee
- A locked knee
- Pain with twisting
- Catching or clicking
- Difficulty walking normally
A displaced bucket handle tear can prevent the knee from straightening and should be assessed promptly. Earlier repair may be associated with a lower risk of failure in some studies, but the evidence is limited and there is no single deadline that applies to every tear. Systematic review of the timing of meniscal repair
How Is a Meniscus Repair Performed?
Most meniscus surgery is performed using keyhole (arthroscopic) techniques.
Through two or three very small incisions, a camera is inserted into the knee and specialised instruments are used to reposition the torn meniscus before securing it with modern repair devices or sutures.
Unlike older techniques that often required larger incisions, today's implants allow many repairs to be performed entirely arthroscopically. However, there still remain benefits to using some repair techniques that use bigger incisions and allow for placement of dissolvable sutures and more of them.
In order to promote healing, some additional techniques can be used to stimulate the native tissue to heal, or adding fibrin or platelets to the tear.
The operation usually takes between 30 and 90 minutes depending on the complexity of the tear and whether other procedures, such as ACL reconstruction, are performed at the same time.
Does a Meniscus Repair Always Heal?
No operation can guarantee healing, but success rates are encouraging.
A systematic review of repairs assessed by second-look arthroscopy found a pooled complete healing rate of 74%. Healing varied between studies and tear types; this is not an individual prediction or a measure of freedom from further surgery. Systematic review of healing after meniscal repair
Not every repaired meniscus heals completely, and occasionally a second operation may be required if symptoms persist or the repair fails.
Why Is Recovery Longer Than After Meniscus Removal?
Many patients are surprised that recovery after meniscus repair is slower than after trimming away the torn fragment.
This is because the repair needs time to heal.
Depending on the type and location of the tear, patients may need to:
- Limit weight-bearing for several weeks
- Wear a knee brace
- Restrict deep bending initially
- Complete a structured physiotherapy programme
Returning to pivoting sports commonly takes 4–6 months, and sometimes longer, depending on the tear and any associated injuries.
Although the rehabilitation is longer, the potential long-term benefit of preserving the meniscus often makes this worthwhile.
When Is Meniscus Repair Preferred?
Current international guidelines increasingly recommend preserving the meniscus whenever technically possible.
Repair is particularly considered when:
- The tear is repairable
- The patient is young or physically active
- The injury is recent
- There is an associated ACL injury
- The meniscal tissue is of good quality
Conversely, complex degenerative tears, severely damaged tissue or tears with poor healing potential may not be repairable. In these situations, removing only the unstable fragment while preserving as much healthy meniscus as possible may be the better option.
Does Repair Reduce Arthritis?
One of the main reasons surgeons increasingly perform meniscus repair is the growing evidence that preserving the meniscus helps protect the knee over time.
A meta-analysis found that meniscal repair was associated with lower rates of progression to advanced osteoarthritis and knee replacement than meniscal resection. The included studies do not establish that repair prevents arthritis, and patient selection and tear characteristics may influence the comparison. Meta-analysis comparing repair with meniscal resection
While repairing the meniscus cannot completely eliminate the risk of arthritis, preserving this important structure appears to improve the long-term health of the knee.
The Bottom Line
A meniscus tear does not automatically mean the damaged tissue should be removed. Modern meniscus surgery increasingly focuses on preserving the meniscus whenever possible because of its important role in protecting the knee.
Not every tear can be repaired, but injuries such as a bucket handle tear, vertical tears and tears near the outer edge of the meniscus often have excellent healing potential when repaired in appropriately selected patients. Although recovery is longer than after removing the torn fragment, preserving the meniscus may improve long-term knee function and reduce the future risk of arthritis.
If you have recently been diagnosed with a meniscus tear, assessment by a knee surgeon or orthopaedic surgeon can help determine whether your tear is suitable for repair and discuss the available treatment options.
This article provides general information only and should not be considered individual medical advice. Treatment decisions should be made following a thorough assessment and discussion with your treating orthopaedic surgeon. It is not possible to determine the most appropriate procedure without considering your individual symptoms, examination findings and imaging.
