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Total hip arthroplasty using two different cementless tapered stems.

J J Purtill1, R H Rothman, W J Hozack

  • 1Rothman Institute at Thomas Jefferson University Hospital, Philadelphia, PA 19107, USA.

Clinical Orthopaedics and Related Research
|January 5, 2002
PubMed
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This 15-year study shows collarless, tapered, porous-coated hip stems achieve excellent clinical results and bone ingrowth in osteoarthritis, rheumatoid arthritis, and octogenarian patients. These designs promote long-term success with low revision rates.

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Geriatric medicine

Background:

  • Primary total hip arthroplasty (THA) is a common procedure for hip joint conditions.
  • Evaluating long-term outcomes of specific femoral stem designs is crucial for patient care.
  • Collarless, tapered, porous-coated femoral stems are designed to promote bone ingrowth and implant stability.

Purpose of the Study:

  • To report the 15-year experience with primary THA using collarless, tapered, porous-coated femoral stems (Trilock and Taperloc).
  • To assess clinical outcomes, including pain and function, in diverse patient groups: osteoarthritis, rheumatoid arthritis, and octogenarians.
  • To evaluate radiographic evidence of bone ingrowth and rates of femoral component revision.

Main Methods:

  • A retrospective review of 15 years of primary THA cases using Trilock and Taperloc femoral stems.

Related Experiment Videos

  • Patient groups included those with osteoarthritis, rheumatoid arthritis, and octogenarians.
  • Clinical outcomes assessed using Charnley pain and function scores, and Harris hip scores.
  • Radiographic analysis for bone ingrowth and documentation of all femoral component revisions.

    • Main Results:

    • Excellent clinical results were achieved across all patient groups at latest follow-up.
    • High Charnley pain and function scores, and Harris hip scores were reported (e.g., Harris hip scores: 92-93 for Trilock/Taperloc, 82 for octogenarians, 93 for rheumatoid arthritis).
    • High rates of radiographic bone ingrowth (96-100%) and low rates of thigh pain (2-4%) and femoral component revision (0-12%) were observed.

    Conclusions:

    • Collarless, tapered, circumferentially porous-coated femoral stems demonstrate excellent clinical outcomes and high rates of bone ingrowth over 15 years.
    • These stem designs are associated with good functional results, minimal thigh pain, and low revision rates in patients with osteoarthritis, rheumatoid arthritis, and in octogenarians.
    • The design features of these stems are considered responsible for their excellent clinical performance and longevity in primary total hip arthroplasty.