How do lateral spirox implants compare to spreader graft in correcting an internal valve collapse?

This is a good question, but unfortunately there have been few scientific studies comparing these various treatments for valve collapse. As far as the spirox implants, this is a relatively new and unproven technique which remains to be evaluated for its long term effectiveness and complication rate. We will have to get evidence based results regarding nasal obstruction after the insertion of these allografts. The use of spreader grafts in internal valve obstruction has value in some patients depending on the severity of the collapse. But often one sees little subjective improvement in the breathing. The effects of using spreader grafts in the presence of cosmetic deformities is far more predictable. The use of breathe right strips however can be fairly dramatic, this is a very inexpensive way to deal with subjective functional breathing obstruction. Best of all it doesn't require a surgical procedure. 

There is no definitive study that compares cartilage spreader grafts and spirox implants for valvular improvement. The only known differences is how and when they are used. If one is having open rhinoplasty surgery anyway then spreader grafts should be done. If not spirox implants can be placed under local anesthesia in the office.