In addition, the impingement also increased the chance of mismatch and edge loading, resulting in further damage of the bearing surfaces
The differences in age, weight and function demand of patients have helped drive the development of so many different types of bearing surfaces
on the market.
The development of alternate bearing surfaces
in total hip arthroplasty (THA) has emerged due to the need to decrease prosthetic component wear, to improve component longevity, and to reduce the risk of revision surgery.
Following unsuccessful attempts that included interposition of materials such as ivory, gold foil, glass, stainless-steel, acrylic and ceramic between the joint bearing surfaces
to relieve pain, in 1938 Philip Wiles at the Middlesex Hospital, London undertook the first prosthetic joint replacement (Wiles 1958).
is just one of several choices surgeons make when performing total knee arthroplasty.
Too little bearing surface
contributes to many issues with vents closing off and parting burrs on cavity edges, and it can stress shutoffs as the tool coins in.
The main action bearing surface
on a Ruger Model 77 rimfire includes the rear tang and the forward action tang forming part of the removable barrel lockup.
Provide a flat load bearing surface
at each end to minimize side thrust.
6-8) Yet even with reports of no aseptic loosening at 10 or 15 years post-implantation, wear of the bearing surface
remains a serious threat to not only the long-term stability of the implant but to bone loss should revision arthroplasty be needed.
As a result, over 50% of physicians surveyed used more than one type of acetabular bearing surface
to reflect the needs of their patients.
Bearing makers index bearing surface
speeds by multiplying bearing diameter times rotation rate for a number they call DN.
One issue not mentioned in Mike's article is bullet bearing surface
length and case neck length.