What the Meniscus Does
Two C-shaped pieces of cartilage sit between the femur and tibia. One on the inside of the knee, one on the outside. Their job is load distribution, shock absorption, and joint stability. They move and deform slightly with every step to spread force across the joint surface evenly.
When one tears, that load distribution breaks down. The joint surface takes uneven stress. Inflammation follows. Depending on the type and location of the tear, the knee can start catching, clicking, or locking in ways that range from annoying to genuinely limiting.
How Meniscus Tears Happen
Traumatic tears happen fast. A hard twist, a deep squat under load, a collision that forces the knee into a position it was not ready for. Common in younger active patients. Pain is usually immediate and swelling builds within hours.
Degenerative tears are different. No specific incident. The meniscus tissue has been losing integrity over the years and tears under loads that would not have caused a problem a decade earlier. Getting up from a low chair. Stepping off a curb. More common in patients over forty and often accompanied by background knee pain that predates the tear.
What Knee Locking Means
True locking is a mechanical block. A torn flap of the meniscus gets caught between the joint surfaces and prevents full extension. The knee cannot straighten. This needs prompt attention because forcing it risks further damage.
Pseudo-locking feels stuck but can be moved with effort. Usually, pain-related muscle guarding rather than a physical obstruction. Limiting but mechanically different from true locking.
Catching and clicking without locking is also common. The torn edge gets intermittently caught during movement, producing anything from a subtle snag to a sharp, painful catch mid-stride.
What the Evaluation Covers
Joint line tenderness, specific stress tests, and how the knee responds to compression and rotation. Combined with the mechanism and symptom pattern, these findings usually give a clear picture before imaging. MRI confirms the type, location, and extent of the tear when that information changes the management plan.
Not all meniscus tears need surgery. Tears in the outer third of the meniscus where blood supply is present have real healing potential with conservative management. Tears in the inner two-thirds do not heal on their own but can often be managed conservatively if they are stable and not causing mechanical symptoms.
What Conservative Care Involves
For tears that are candidates for non-surgical management, the approach targets:
- Reducing joint inflammation and swelling that is inhibiting muscle activation and limiting range of motion
- Rebuilding quad and hip strength that takes compressive load off the damaged meniscus
- Restoring the full range of motion without provoking mechanical symptoms
- Retraining movement patterns loading the injured compartment unevenly
Activity modification during this phase matters. Deep squatting, pivoting on a planted foot, and high-impact activity all increase compressive and shear load on the torn tissue. Identifying and temporarily modifying these allows rehab to progress without repeatedly aggravating the tear.
Let Modern Medicine of East Mesa, AZ help. Call us today.
