Periprosthetic Bone Mineral Density After Total Hip Arthroplasty Performed Through a Minimally Invasive Anterior Approach (AMIS) With Either an AMIStem or a Quadra Femoral Component

The recruitment status of this study is unknown because the information has not been verified recently.
Verified July 2011 by Medacta International SA.
Recruitment status was  Active, not recruiting
Information provided by:
Medacta International SA Identifier:
First received: January 26, 2011
Last updated: July 11, 2011
Last verified: July 2011

This is a monocentric, prospective, randomized clinical survey to verify if the periprosthetic remodelling brought about either the AMIStem or the Quadra femoral component is equivalent.

Condition Intervention
Avascular Necrosis
Fracture of the Femoral Neck or Head
Congenital Hip Dysplasia
Procedure: Anterior Minimally Invasive Approach (AMIS)

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Masking: Open Label
Primary Purpose: Treatment
Official Title: Periprosthetic Bone Mineral Density After Total Hip Arthroplasty Performed Through a Minimally Invasive Anterior Approach (AMIS) With Either an AMIStem or a Quadra Femoral Component.

Resource links provided by NLM:

Further study details as provided by Medacta International SA:

Primary Outcome Measures:
  • Compare periprosthetic bone mineral density (BMD) in patients that have undergone a total hip arthroplasty (THA) via the direct anterior approach receiving either a Quadra or AMIStem femoral component. [ Time Frame: 0-12 months ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Changes from baseline in patients' function. Clinical evaluation using the Harris Hip Score [ Time Frame: 6 weeks, 6 months, 1 year ] [ Designated as safety issue: No ]
  • Changes from baseline in patient's activity level. Assessment using the High Activity Arthroplasty Score. [ Time Frame: 6 months, 1 year ] [ Designated as safety issue: No ]
  • Radiological evaluation to assess the fixation and stability of femoral and acetabular components. [ Time Frame: 6 months, 1 year ] [ Designated as safety issue: No ]

Estimated Enrollment: 40
Study Start Date: September 2010
Estimated Study Completion Date: September 2012
Estimated Primary Completion Date: September 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Quadra Group Procedure: Anterior Minimally Invasive Approach (AMIS)
Active Comparator: AMIStem Group Procedure: Anterior Minimally Invasive Approach (AMIS)


Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients who are willing and able to provide written informed consent for participation in the study. Written informed consent must be obtained prior to the patient's surgery.
  • Patients presenting with disease that meets the indications for use for Medacta implants defined by this study (on-label use (enclosure 2)).
  • Patients must be willing to comply with the pre and post-operative evaluation schedule.
  • Patients with only one lower limb arthroplasty

Exclusion Criteria:

  • Patient with metabolic bone diseases, use of steroids or other drugs affecting bone metabolism
  • Patients with osteoporosis (pre-op T-score < -2,5)
  • Patients with significant comorbidities
  • Patients with both hip and knee arthroplasty
  • Patients with restricted mobility
  • Patient with severe hip contracture
  • Those with one or more medical conditions identified as a contraindication defined by the labeling on any Medacta implants used in this study
  Contacts and Locations
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Please refer to this study by its identifier: NCT01285843

St. Elisabeth Dillingen
Dillingen an der Donau, Bayern, Germany, 89407
Sponsors and Collaborators
Medacta International SA
Principal Investigator: Martin Nolde, Dr. Med. DGOOC; BVO; BVASK
  More Information

No publications provided Identifier: NCT01285843     History of Changes
Other Study ID Numbers: P01.004.14
Study First Received: January 26, 2011
Last Updated: July 11, 2011
Health Authority: Germany: Federal Institute for Drugs and Medical Devices

Additional relevant MeSH terms:
Hip Dislocation, Congenital
Hip Dislocation
Joint Diseases
Musculoskeletal Diseases
Musculoskeletal Abnormalities
Congenital Abnormalities
Wounds and Injuries
Hip Injuries
Pathologic Processes
Bone Diseases
Rheumatic Diseases processed this record on September 11, 2014