Why Does Your Knee Hurt When You Walk Down Stairs?

You may feel fine on level ground, then notice knee pain with every step down the stairs. Descending asks your leg to control your body as the knee bends under load. That can reveal a problem that does not bother you during an ordinary walk. The location of the pain, when it began, and whether the knee swells or catches all help explain what may be happening.

Why going down can feel different

Your thigh and hip muscles help control the lowering motion, while the kneecap moves as the knee bends. Pain around or behind the kneecap may be related to patellofemoral pain, which commonly shows up on stairs or with squatting. Arthritis, tendon irritation, a meniscus problem, or another issue can also make stair descent uncomfortable. The symptom alone does not identify a diagnosis.

Notice the pattern

Is the pain in front of the knee, along the inside or outside, or deep in the joint? Does it occur on every step or only after a run, a long day, or a recent increase in activity? Are you using the railing or turning sideways to avoid the pain? Those details are useful to share with a physical therapist. Swelling, locking, giving way, or pain after a fall adds important context and may require medical evaluation.

What physical therapy looks at

A physical therapist can watch you walk and step down, assess how your hip, knee, and ankle move, and test strength and flexibility. The goal is to identify which demands the knee is struggling to manage. A plan may include gradual strengthening, balance or movement work, and a temporary change to the activities that aggravate symptoms. The right approach depends on the person; repeating a random online exercise is not the same as an evaluation.

What to do in the meantime

Use a handrail and take stairs at a comfortable pace. Avoid forcing repeated steps through significant pain. If a recent change in running, workouts, or daily activity started the problem, reduce that load while you seek guidance. Do not assume that all knee pain needs complete rest, but do not push through worsening symptoms to test it.

If you cannot bear weight, have major swelling after an injury, or your knee locks or repeatedly gives way, seek prompt medical advice. For ongoing pain with stairs, Physical Therapy Partners in Cary can help assess your movement and develop a plan to return to daily activities with more confidence. An evaluation offers a better answer than guessing at the cause from one symptom.