Osteoarthritis, the most common type of joint arthritis, can affect the hands, knees, and hips. Knee arthritis is known to impede joint function, resulting in knee pain and eventually disability as the condition progresses. The stages of osteoarthritis (OA) in the knee are numbered from 0 for a normal, healthy knee to 4 for severe OA.
According to the Centers for Disease Control and Prevention, the number of persons who suffer from knee pain problems is steadily increasing. With one in every two persons developing symptomatic knee OA at some point in their lives, it has a substantial impact on health, workplace productivity, and economic consequences. Diagnosis and frequent symptoms make OA discomfort easy to recognize. Because some persons with severe arthritic knee pain may only show minor changes on x-rays, it’s critical to focus on the symptoms rather than just the x-rays. Here’s a breakdown of the many phases of osteoarthritis of the knee, including normal, minor, mild, moderate, and severe stages, as well as treatment options.
Normal (Stage 0)
The knee is defined as Stage 0 when there are no signs of osteoarthritis and there are no recognized impairments or signs of joint destruction.
Treatments
Stage 0 OA does not necessitate therapy.
First Stage – Minor
Patients with stage 1 OA will develop modest wear and tear as well as bone spur growths at the ends of their knee joints. However, you are unlikely to experience any pain or discomfort at this time.
Treatments
Orthopedic experts may not propose any particular treatment for stage 1 if the patient is not prone to OA. Supplements like glucosamine and chondroitin may, however, be advised. Regular exercise and other lifestyle adjustments may also be beneficial.
Stage 2 – Moderate
In Stage 2, diagnostic pictures or X-rays of knee joints will reveal additional bone spur growth, and people will begin to experience joint discomfort even when the space between the bones appears normal. The area surrounding the knee joints usually feels tight and unpleasant, especially after sitting for a long time, rising in the morning, or working out. Though the cartilage and soft tissues remain healthy in size, increasing the production of enzymes such as metalloproteinases causes the proteolytic breakdown of the cartilage matrix.
Treatments
When your doctor finds and diagnoses OA early on, it’s easier to stick to a treatment plan that will slow the disease’s progression. There are a variety of nonpharmacologic treatments available to help ease the pain and discomfort that this mild stage causes. For greater joint stability, many patients are advised to follow a stringent exercise and strength training plan. To protect the knee from stress, braces, knee supports, or shoe inserts might be employed.
Moderate (Stage 3)
Stage 3 is referred to as “moderate,” in which the cartilage surface between the bones has evident degradation and fibrillation has narrowed the gap between the bones. As the condition advances, proteoglycan and collagen fragments are released into the synovial fluid, causing the bones to grow spurs at the joints.
There is visible joint inflammation as osteoarthritis of the knee progresses, causing frequent pain when walking, running, squatting, extending, or kneeling. When walking there may be popping or snapping sounds in addition to muscular stiffness after sitting for a long time or when waking up in the morning. Treatments
Pain relievers or over-the-counter NSAIDs may be prescribed. If these treatments fail, the orthopaedic specialist may prescribe stronger pain relievers like codeine or oxycodone.
Patients who do not respond well to physical therapy, a weight-loss program, or NSAIDs may benefit from viscosupplementation, which involves injecting hyaluronic acid into the knee joint. Moderate knee arthritis can be aggressively treated with three to five hyaluronic acid injections spread out over three to five weeks. It may take a few weeks for the therapy to show benefits, but pain alleviation normally lasts six months. Severe (Stage 4)
Stage 4 is regarded as the most severe. The joint space between the bones is significantly reduced in stage 4, leading cartilage to wear away and the joint to become stiff. The destruction of cartilage triggers a chronic inflammatory response, resulting in a reduction in synovial fluid, which causes friction and pain when walking or moving the joint.
Synovial metalloproteinases, cytokines, and TNF are produced in higher amounts, which can seep back into the cartilage and kill soft tissue around the knee. The condition has progressed to the point where new spurs have formed; creating terrible agony that makes even simple tasks like walking and descending stairs difficult.
Treatments
In severe cases of OA of the knee, an orthopaedic surgeon may conduct osteotomy or bone realignment surgery, in which the bone above or below the knee is cut to shorten its length and realign it for less stress on the knee joint. By transferring the body’s weight away from the region of bone spur formation and bone destruction, this operation helps to protect the knee.
Total knee replacement, also known as arthroplasty, is another surgical option. The injured joint is removed and replaced with a plastic or metal prosthetic device during this surgical operation. To restore full mobility, surgery recovery might take many weeks and involves patience and discipline, as well as ongoing physical and occupational therapy.
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