Early clinical results with the hydroxyapatite-coated porous long-term stable fixation total hip system.
The design and early clinical results with uncemented porous-coated long-term stable fixation anatomic and midstem total hip systems (Implant Technology, Inc, Secaucus, NJ) are described.  In an ongoing Food and Drug Administration-approved Investigational Device Exemption-Premarket Approval Program, a random selection method is used to determine patients receiving implants with a hydroxyapatite (HA) coating applied to the porous surface and those receiving uncoated implants.  The early clinical results with the HA-coated systems show them to appear superior to the uncoated systems.  A greater percentage of patients with HA-coated systems have clinical scores in the excellent to good range, which is primarily a reflection of less prostheses-related pain.  Radiographically, all components appear well fixed, with evidence of bone ingrowth.  The HA-coated systems have a decreased incidence of radiolucencies, particularly in proximal zones.
Tulane University Medical Center, New Orleans, LA.
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Cook
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Enis
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Armstrong
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Lisecki
D002858:Chromium Alloys; D005260:Female; D006622:Hip Prosthesis / Q000295:instrumentation*; D006801:Humans; D006882:Hydroxyapatites; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery; D010020:Osteonecrosis / Q000601:surgery; D011474:Prosthesis Design