15 Februarie 2026

    How Do You Know If You Have Knee Osteoarthritis? Signs and Symptoms Explained Simply

    Author: Dr. Alexandru Grecu — Senior Orthopedic and Trauma Surgeon

    Medically reviewed by Dr. Alexandru Florian Grecu, Senior Orthopedic Surgeon · Published: 15 februarie 2026 · Updated: 2 mai 2026

    In short: Knee osteoarthritis (gonarthrosis) is the most common form of joint wear and tear. If identified early, it can be significantly slowed down — with physical therapy, weight management, and injections. Left to advance, it reaches stages where the only option is a knee replacement. The article below helps you recognize the early signs and decide when it's time to see an orthopedic specialist.

    6 Symptoms That Indicate Knee Osteoarthritis

    1. Pain that appears with exertion, disappears with rest

    Initially, pain occurs only after prolonged walking, climbing stairs, or standing. It subsides with rest.

    2. Short morning stiffness (under 30 minutes)

    The knee feels "stiff" in the morning but "loosens up" within 10–30 minutes. This is the typical pattern for osteoarthritis (in rheumatoid arthritis, the stiffness lasts over 1 hour).

    3. Joint crepitus with pain

    Isolated crackling sounds, without pain, are common and benign. They only become relevant when associated with pain.

    4. Progressive loss of mobility

    You can no longer easily squat, cross one leg over the other, or descend stairs normally.

    5. Changes in gait

    You begin to compensate unconsciously — taking shorter steps, shifting weight to the other leg, a slight limp.

    6. Night pain

    This is a more advanced stage. The pain disrupts your sleep. At this point, do not delay an orthopedic consultation.

    The Decision: When to See an Orthopedist

    If you check 3 or more of the signs above, it's time for an evaluation.

    The sooner you come in, the more options you have available:

    • Early stage (Kellgren-Lawrence I-II) → conservative treatment: targeted physical therapy, weight management, possibly injections.
    • Medium stage (Kellgren-Lawrence III) → conservative + injections with hyaluronic acid or PRP.
    • Advanced stage (Kellgren-Lawrence IV) → discussion about knee replacement.

    The diagnosis is simple: a knee X-ray + clinical exam. No special blood tests are necessary.

    What is NOT Osteoarthritis

    • Crepitus without pain: common, benign, does not require treatment.
    • Occasional pain after intense sports: likely overuse, not wear and tear.
    • Acute pain with obvious inflammation: could be a sprain, meniscal tear, gout — requires a different evaluation.

    For Further Reading

    For the complete guide on the stages of knee osteoarthritis, detailed risk factors, and treatment options with figures and scientific sources, read the pillar article: → Knee Osteoarthritis: A Complete Guide

    Schedule an Evaluation Consultation

    If you recognize yourself in several of the symptoms above, an evaluation consultation can clarify the stage and real options for your case. Bring your X-rays; I will perform a clinical evaluation and we will discuss — without commercial pressure — what is indicated now: conservative treatment or, possibly, surgery.

    Appointments: 0251 960 (MedLife) or 0787 210 391

    Consultations: CAS or private (360 RON). Monday–Friday, 08:00–18:00.

    Have questions or need a consultation?

    Scientific References

    1. Felson DT et al. — Weight loss reduces the risk of symptomatic knee osteoarthritis in women. Ann Intern Med. 1992;116(7):535-9.

      For the rule 'losing 5 kg can reduce knee pain by 20-30%'.

    2. Messier SP et al. — Effects of intensive diet and exercise on knee joint loads in adults with knee osteoarthritis. JAMA. 2013;310(11):1226-1235.

      For the rule '1 kg of body weight = approximately 4 kg of pressure per knee with each step'.

    3. Bourne RB et al. — Patient satisfaction after total knee arthroplasty: who is satisfied and who is not? Clin Orthop Relat Res. 2010;468(1):57-63.

      For the >90% satisfaction rate after knee replacement.

    4. Swedish Hip Arthroplasty Register — Annual Report 2022.

      For the long-term success rate of hip replacement.

    5. Allen KD, Golightly YM — Epidemiology of osteoarthritis: state of the evidence. Curr Opin Rheumatol. 2015;27(3):276-83.

      For the prevalence of knee osteoarthritis and risk factors (3-4 times more common in women).