Patient presents with complaints of left knee pain consistent with degenerative joint disease (DJD), also known as osteoarthritis of the knee.  Onset of symptoms was gradual, reported as approximately six months ago, and has progressively worsened.  Pain is described as aching and stiff, localized to the left knee joint, and aggravated by weight-bearing activities such as walking and standing.  Patient reports morning stiffness lasting approximately 30 minutes.  Pain is relieved by rest and over-the-counter analgesics such as ibuprofen.  Physical examination reveals crepitus upon left knee range of motion, mild joint effusion, and tenderness to palpation along the medial joint line.  No erythema or warmth noted.  Range of motion is limited with flexion to 110 degrees and extension to -5 degrees.  McMurray's test is negative for meniscus tear.  Radiographic imaging of the left knee demonstrates osteophyte formation, joint space narrowing, and subchondral sclerosis, consistent with the diagnosis of osteoarthritis.  Assessment: Left knee osteoarthritis (ICD-10-CM: M17.12).  Plan: Conservative management will be initiated, including recommendations for weight loss if applicable, regular low-impact exercise such as swimming or cycling, and physical therapy to improve range of motion and strengthen supporting musculature.  Patient education provided regarding the chronic nature of osteoarthritis and the importance of self-management strategies.  Pharmacological management will include continued use of over-the-counter NSAIDs as needed for pain relief.  Follow-up appointment scheduled in four weeks to assess response to treatment and discuss further management options if necessary, which may include intra-articular corticosteroid injections or referral to orthopedics for surgical intervention.