Prospective Clinical Follow-up of the Echo Bi-Metric Microplasty Stem for Total Hip Arthroplasty

• Subjects are eligible for this trial if they satisfy all of the following criteria:

  • Patient is 18 to 65 years of age, inclusive
  • Patient is skeletally mature
  • Patient qualifies for primary unilateral or bilateral total hip arthroplasty based on physical exam and medical history including at least one of the following:
  • Osteoarthritis
  • Avascular necrosis
  • Rheumatoid arthritis
  • Correction of functional deformity
  • Treatment of non-union, femoral neck fracture, and trochanteric fractures of the proximal femur with head involvement, unmanageable by other techniques
  • Patient has no history of previous total hip arthroplasty or arthrodesis of the affected hip joint(s)
  • Patient is willing and able to complete scheduled follow-up evaluations as described in the Informed Consent
  • Patient, or the patient's legally authorized representative, has participated in the Informed Consent process and is willing and able to sign an IRB- approved informed consent

Exclusion Criteria:

• Subjects will be excluded from this trial if they satisfy any of the following criteria as determined by the research staff or in the judgment of the treating physician:

  • Patient has a total prosthetic hip replacement device (including surface replacement arthroplasty, endoprosthesis, etc.) in the affected hip joint(s)
  • Patient is septic or has an active infection
  • Patient is uncooperative patient or is incapable of following directions
  • Patient is diagnosed with osteoporosis
  • Patient is diagnosed with a metabolic disorder which may impair bone formation
  • Patient is diagnosed with osteomalacia
  • Patient has distant foci of infections which may spread to the implant site