23/07/2026
Understanding the progression of Knee Osteoarthritis (OA) and the step-wise approach to clinical management. 🦵📉
The Grades of Knee OA (Kellgren-Lawrence Classification):
Grade 0 (Normal): Healthy joint, no radiographic features of OA.
Grade 1 (Doubtful): Minute osteophytes of doubtful clinical significance.
Grade 2 (Mild): Definite osteophytes, possible joint space narrowing. Symptoms usually begin here.
Grade 3 (Moderate): Multiple osteophytes, definite joint space narrowing, some sclerosis, and possible bone contour deformity. Joint stiffness and pain are frequent.
Grade 4 (Severe): Large osteophytes, marked joint space narrowing, severe sclerosis, and definite bony deformity (“bone-on-bone”).
The Treatment Ladder (Conservative to Surgical):
Lifestyle Modifications: Weight optimization and targeted physical therapy (specifically quadriceps and hamstring strengthening) to offload the joint.
Pharmacotherapy: Oral or topical NSAIDs for inflammation and pain management.
Intra-articular Therapies: Corticosteroid injections for acute inflammatory flares, or viscosupplementation (hyaluronic acid) for lubrication.
The Last Resort: Total Knee Arthroplasty (TKA). Joint replacement is strictly reserved for end-stage (Grade 4) OA when all conservative measures have been exhausted and the patient’s daily functional mobility and quality of life are severely compromised.
Save this quick reference for your clinical rotations or patient education! 📌👇
TotalKneeReplacement MedEd ClinicalPearls PatientEducation
