McDavid 421 Knee Support with stays

  • Code: 3993

  • Unit: 


The McDavid™ 421 Knee Support provides moderate support helping to relieve symptoms and aid recovery from chondromalacia, patellar subluxation and tendonitis. The spring steel stays provide reinforced support. A padded buttress supports the patella, while the elastic hook and loop straps ensure outstanding fit. 


  • Latex-free neoprene thermal/compression
  • Exterior layer of nylon fabric for durability
  • Fits left or right
  • Content: 100% latex-free 4.8mm neoprene (CR) - exclusive of binding/straps/cover fabric
  • Clamshell Packaging


  • Chondromalacia
  • Patella subluxation
  • Tendonitis


Code Description Unit
3993 Small EACH Add to quote
3994 Medium EACH Add to quote
3995 Large EACH Add to quote
3996 X-Large EACH Add to quote
3997 XX-Large EACH Add to quote

Knee circumference

Small 33 - 35.6cm
Medium 35.6 - 38.1cm
Large 38.1 - 40.6cm
X-Large 40.6 - 44.5cm
XX-Large 44.5 - 48.3cm