SEOUL — It is a common misconception that knee pain is an inevitable part of getting older. However, medical experts emphasize that persistent knee discomfort should never be dismissed simply as a natural consequence of aging.

Knee osteoarthritis is widely recognized as a condition where cartilage wears down. In reality, the disease impacts the entire joint ecosystem, including the subchondral bone, menisci, ligaments, synovial membrane, and surrounding muscles. While the risk increases with age, osteoarthritis is not a universal or normal aging process. Various factors contribute to its development and progression, including weight gain, repetitive knee strain, previous trauma, meniscus or ligament injuries, family history, and leg alignment abnormalities.

According to the Korea Disease Control and Prevention Agency (KDCA), approximately 28.1% of adults aged 65 and older were diagnosed with osteoarthritis in 2021—meaning roughly 3 out of 10 older adults have experienced the condition. Because it is so prevalent among seniors, early and accurate diagnosis is critical rather than enduring the pain as routine aging.

Recognizing the Symptoms and Stages

In the early stages, discomfort typically arises during prolonged walking, climbing stairs, squatting, or rising from a sitting position. As the condition worsens, even walking on flat ground becomes challenging, and short distances can trigger swelling and sharp pain.

Advanced stages are characterized by persistent resting pain, sleep disruption due to nocturnal aches, chronic swelling, stiffness, and joint locking or buckling. Physical changes—such as bowed legs (O-legs) or knock-knees (X-legs), alongside altered walking postures—also signal the need for an orthopedic evaluation.

Left untreated, osteoarthritis progressively limits daily mobility, restricting walking, stair use, and overall independence.

Diagnosis: Beyond a Single X-Ray

Diagnosis relies on a comprehensive assessment of patient symptoms, physical examinations, and imaging studies. Weight-bearing X-rays are foundational, allowing physicians to measure joint space narrowing while the patient is standing. Full-leg alignment X-rays further evaluate the mechanical axis and weight-bearing line.

While magnetic resonance imaging (MRI) is not mandatory for every patient, it provides crucial insights when X-rays fail to fully explain symptoms or when soft tissue damage—such as meniscal tears, ligament ruptures, or osteonecrosis—is suspected.

Treatment Options: From Conservative Care to Advanced Robotics

Treatment strategies are tailored to the severity of the disease:

Conservative Management: Early- and mid-stage osteoarthritis is typically managed with weight management, physical therapy, medications, and targeted injections. The primary goals are pain reduction, functional preservation, and slowing disease progression.
Surgical Interventions: If conservative methods fail and quality of life is severely compromised, surgical options—ranging from osteotomies and partial knee replacements to total knee arthroplasty—are considered based on overall health, age, and activity levels.
Robot-Assisted Surgery: Modern orthopedic technology has introduced robot-assisted joint replacement to enhance precision. Rather than replacing the surgeon, the robotic system creates a three-dimensional anatomical map prior to surgery to evaluate bone structure, alignment, and ligament balance. During the operation, real-time feedback allows surgeons to optimize implant positioning and ligament tension. This technology offers particular benefits for patients with severe angular deformities (O- or X-legs) or complex anatomical variations resulting from past injuries.

Medical specialists advise that knee pain is a medical condition requiring proactive diagnosis and management, not a burden to be silently endured. Consulting with healthcare professionals to determine the optimal timing for treatment—whether through lifestyle adjustments or advanced surgical techniques—is essential for preserving long-term mobility.

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