Swelling in the upper knee: what to know

A tender swelling just above the kneecap can follow repeated stairs, squats, jumping, or a direct blow. Pain when straightening the knee may involve the quadriceps tendon or nearby tissues. Fluid within the knee can make the upper recess look full. Knee Bursitis, Knee Osteoarthritis, Gout, and injuries such as an ACL Tear or Meniscus Tear can each be associated with knee swelling, but the visible location does not establish the cause.

Assessment includes the kneecap, thigh muscles, tendon, joint line, and back of the knee. The examiner may compare both legs, test stability and motion, and consider imaging or Joint Aspiration when the findings call for it.

Temporarily reduce kneeling, stairs, running, and deep bending. Elevate the leg and apply a cloth-wrapped cool pack for brief periods. Keep the knee gently mobile if this is comfortable, but do not force extension or continue an exercise that increases swelling.

Seek a routine assessment when swelling persists, affects sleep or walking, follows a twist, or repeatedly returns. Bring a list of recent activities and describe whether the swelling appeared immediately or later.

Get urgent help for a hot red knee with fever, severe pain, inability to bear weight, marked deformity, rapidly increasing swelling, or a foot that becomes cold, pale, or numb. Sudden leg swelling with breathlessness or chest pain is an emergency.

Ask which structure is swollen, whether the quadriceps tendon or joint is involved, and whether imaging is necessary. Ask how much walking is appropriate, when rehabilitation can start, and which warning signs require an earlier review.