Bell-horn's 3-panel Knee Immobilizers Are Designed For Easy Adjustment And Correct Fit Doctor Recommended For Light Support Of Minor Strains And Sprains Easily Applied Back Gusset Included Patella Strap For Correct Fit Immobilization Of The Knee Joint Following Surgical Or Non-surgical Correction Of Bone Ligament Injury Or Muscle Damage To The Knee 12 Height Fits Up To 20 Circumference Suggested Hcpcs Code: L1830