-osis. 1  1 suffix meaning a (specified) action, process, or result: homeosis, narcosis, zygosis. 2  2 suffix meaning increase in a pathological condition: calcicosis, psittacosis, varicosis. -osis. , pl. Combining form meaning a process, condition, or state, usually abnormal or diseased; production of an abnormal substance, increase of a normal substance, or parasitic infestation.
If non-surgical treatment fails to relieve the symptoms of accessory navicular syndrome, surgery may be appropriate. Surgery may involve removing the accessory bone, reshaping the area, and repairing the posterior tibial tendon to improve its function. This extra bone is not needed for normal foot function.
As cartilage wears and bone rubs against bone, pain and reduced mobility follow. Knee replacement surgery is a common solution that provides dramatic pain relief for more than 90 percent of patients. The vast majority of knee replacement procedures are used to treat osteoarthritis. The procedureâintroduced in 1968ârelies on a mechanical implant to replace severely arthritic or damaged knee joints.