The menisci are two crescent-shaped wedges of tough fibrocartilage (medial and lateral meniscus) located inside the knee joint. They act as the joint’s primary shock absorbers, distributing body weight, reducing friction between bones, and assisting in knee stability. A meniscus tear can happen suddenly due to a twisting injury during sports, or it can develop gradually over time due to wear and tear (degenerative tears) in middle-aged and older adults.
Dr. Francisco Hernandez specializes in minimally invasive arthroscopic techniques to address meniscal tears at Hospital Punta Mita, emphasizing joint preservation to protect long-term knee health.
Key Symptoms of a Meniscus Tear (Triage)
If you have suffered a knee injury, watch for these common signs of a meniscus tear:
- Localized pain: Pain along the joint line (either on the inner or outer side of the knee) that worsens when twisting or squatting.
- Catching or locking: A physical sensation that the knee is stuck and cannot bend or straighten, caused by a torn piece of cartilage getting caught in the joint mechanism.
- Swelling and stiffness: Delayed swelling (developing over 24 to 48 hours) accompanied by a tight feeling in the joint.
- Instability: A feeling that the knee is weak or may “give out” under your weight.
Surgical Options: Meniscus Repair vs. Partial Meniscectomy
Modern knee surgery focuses on saving as much meniscal tissue as possible to protect the joint from future wear. The two main arthroscopic procedures are:
1. Meniscus Repair (Suturing)
- How it works: The surgeon uses specialized micro-sutures to stitch the torn edges of the meniscus back together.
- Indications: Best for younger, active patients with tears in the outer third of the meniscus (“red zone”), which has a good blood supply and the biological capability to heal.
- Long-term benefit: Preserves the knee’s shock-absorbing function, significantly reducing the risk of developing early osteoarthritis later in life.
2. Partial Meniscectomy (Trimming)
- How it works: The surgeon trims away and smooths down only the loose, unstable torn fragment that is catching in the joint, leaving the remaining healthy meniscus intact.
- Indications: Recommended for tears in the inner two-thirds of the meniscus (“white zone”), which lacks blood supply and cannot heal, or for complex, frayed degenerative tears.
- Benefit: Allows for a very rapid initial recovery and immediate weight-bearing.
Recovery and Rehabilitation Timelines
The type of surgery performed directly determines your postoperative restrictions and physical therapy plan:
| Recovery Milestone | Partial Meniscectomy (Trimming) | Meniscus Repair (Suturing) |
|---|---|---|
| Crutches Use | 2 to 5 days (immediate weight-bearing as tolerated) | 4 to 6 weeks (strict non-weight-bearing or partial loading) |
| Knee Bracing | Not required | Protective hinged brace required (limits bending) |
| Physical Therapy | Starts in week 1 (focuses on range of motion) | Starts in week 1 (focuses on muscle activation and protected movement) |
| Return to Light Work | 1 to 2 weeks | 4 to 6 weeks |
| Return to Impact Sports | 6 to 8 weeks | 4 to 6 months |
Quality Care in Puerto Vallarta
Surgeries are performed in state-of-the-art operating rooms at Hospital Punta Mita, using modern arthroscopic towers and surgical equipment. We work with leading international and national insurance companies to facilitate direct billing or reimbursement claims.
Frequently Asked Questions about Meniscus Tears
My MRI shows a meniscus tear, but my knee doesn’t hurt. Do I need surgery?
No. Many small, stable, or degenerative meniscus tears do not cause symptoms and do not require surgery. In these cases, conservative management—such as targeted physical therapy, thigh strengthening, and activity modification—can successfully manage the condition. Surgery is reserved for tears that cause persistent pain, catching, locking, or joint swelling.
What happens if I ignore a locked knee?
A locked knee occurs when a displaced fragment of the meniscus gets stuck in the joint, preventing it from straightening. If left untreated, forcing the knee to move with a locked fragment can cause rapid, severe damage to the surrounding cartilage, leading to irreversible joint wear and early arthritis.
Can a repaired meniscus tear again?
Yes. Because meniscus repair relies on the body’s ability to heal the tissue, there is a 15% to 20% chance that the repair may not heal fully or may tear again in the future. If a repair fails and symptoms return, a second minor arthroscopic procedure may be needed to trim the unhealed tissue.