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Meniscus vs. ACL Injury on the Slopes: How to Tell the Difference After a Fall

Meniscus vs. ACL Injury on the Slopes: How to Tell the Difference After a Fall

One minute you’re carving fresh powder. The next, a caught edge and a hard fall leave your knee telling a different story. On the slopes, knowing whether you are dealing with a meniscus injury or an ACL injury is critical. It shapes treatment, recovery time, and your return to sport.

ACL vs. Meniscus Tear Symptoms: Did You Feel a "Pop"?

The most telling sign of an ACL tear is often an audible "pop" at the moment of impact, usually followed by the knee "giving out" or feeling unstable. In contrast, a meniscus tear might feel like a sharp, localized pain. While an ACL injury typically causes rapid, significant swelling within hours (hemarthrosis), meniscus symptoms often involve a delayed swelling or a sensation that the knee is "catching" or "locking" during movement.

Knee Instability vs. Mechanical Locking: Can You Walk on a Torn ACL?

If you can stand but feel like your knee is wobbling or "loose," your Anterior Cruciate Ligament (ACL) is likely the culprit. This ligament acts as the primary stabilizer of the knee joint. On the other hand, skiers with meniscus injuries can often still walk or even finish their run, but they will experience pain when twisting the knee or performing deep squats. If your knee feels physically blocked from straightening fully, it is a classic sign of a "bucket handle" meniscus tear.

ACL Reconstruction and Meniscus Repair: Long-Term Recovery for Athletes

Both injuries can sideline your season, but the treatment paths differ. Because the ACL has a poor blood supply, complete tears rarely heal on their own and often require ACL reconstruction. The meniscus, a C-shaped cushion of cartilage, may be treated through minimally invasive arthroscopic repair or debridement. Ignoring these symptoms can lead to premature osteoarthritis, making an early professional evaluation essential for maintaining your long-term joint health.

When to Seek an Orthopedic Consultation

While initial rest, ice, and elevation can help after a hard day on the slopes, they are not a substitute for a clinical diagnosis. For skiing and other winter sports injuries, an arthroscopic knee specialist uses advanced imaging and targeted physical examination tests to pinpoint the exact source of knee damage. An accurate diagnosis allows treatment, whether surgical or non-surgical, to be tailored for a safe return to skiing and other high-demand activities.

AUTHOR: Geoffrey Van Thiel, MD, is a board-certified orthopedic surgeon at OrthoIllinois specializing in sports medicine treatments of the hip, knee, and shoulder, with a focus on compassionate, cutting-edge care. Dr. Van Thiel’s commitment to athletics and an active lifestyle is evident in both his personal belief that activity leads to better health and his involvement with the Chicago Blackhawks Medical Network, AHL Rockford IceHogs, and US National Soccer Teams.

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