Approach for DDx

1. Rule out Inflammation arthritis, infection, fracture → Arthritis
2. Rule out malignancy
   • Constitutional symptom
   • Most Common for BONE: blt-pk
   • XR, MRI
3. Rule out referred pain
   • Lumbar Referred Pain: Radicular pain
     • Pattern 3: Sciatica/Lumbar radiculopathy
     • Pattern 4: Neurological Claudication (FR)
   • Hip Referred Pain
     • Limited ROM and Irritable internal rotation
4. DDx of MSK Pain based on Anatomy
   1. Anterior
      • Patello-femoral Syndrome
   2. Posterior
      • Baker’s Cyst
   3. Medial and Lateral
      1. Peri-articular (full passive ROM)
         • Stress Fracture
         • Pes Anserinus bursitis (Medial)
         • IT Band Syndrome (Lateral)
      2. Articular

         • Meniscal tear

           • Knee locking

         • OA - Osteoarthritis → Knee OA

           

Investigation

Physical Exam

• Knee Exam

Imaging

• XR
• MRI