Hydroxyapatite coated implants

Total hip arthroplasty in the young patient and patients with avascular necrosis

James A. D'Antonio, William Capello, Michael T. Manley, Judy Feinberg

Research output: Contribution to journalArticle

105 Citations (Scopus)

Abstract

Two high risk groups for total hip arthroplasty, 136 patients (155 hips) younger than 50 years of age (average age, 38 years) and 44 patients (53 hips) with the diagnosis of avascular necrosis, have a minimum followup of 5 years and a mean followup of 6.8 years. The average Harris Hip Score at last followup totaled 93 and 90, respectively, and thigh pain was reported in 1.3% and 3.8%, respectively. All patients in both groups received the same hydroxyapatite coated femoral stem and the mechanical failure was 0%. No stem was revised for aseptic loosening, 100% of stems were bony stable by radiographic criteria, new bone formation was progressive about the femoral stem, and 0% endosteal lysis was found. The acetabular components had a mechanical failure rate of 10% and 7.5%, respectively, without osteolysis, and an additional 7% and 7.5% failure as a direct result of progressive osteolysis. The results with the porous press fit and hydroxyapatite threaded sockets were far superior to that of the smooth hydroxyapatite press fit sockets and socket failure was associated with thin polyethylene liners and the use of 32-mm head diameters. These findings show a high success rate with a nonporous hydroxyapatite coated titanium femoral stem. However, hydroxyapatite on a smooth acetabular component yielded less predictable results indicating that for long term fixation of the acetabulum an interlock of bone is preferred.

Original languageEnglish
Pages (from-to)124-138
Number of pages15
JournalClinical Orthopaedics and Related Research
Issue number344
StatePublished - 1997

Fingerprint

Durapatite
Arthroplasty
Hip
Thigh
Necrosis
Osteolysis
Acetabulum
Polyethylene
Titanium
Osteogenesis
Head
Bone and Bones
Pain

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

Hydroxyapatite coated implants : Total hip arthroplasty in the young patient and patients with avascular necrosis. / D'Antonio, James A.; Capello, William; Manley, Michael T.; Feinberg, Judy.

In: Clinical Orthopaedics and Related Research, No. 344, 1997, p. 124-138.

Research output: Contribution to journalArticle

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