This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Comparison of Two Radial Head Implants

This study has been completed.
Rush University
North Shore University Hospital
Information provided by (Responsible Party):
John Berschback, Northwestern University Identifier:
First received: January 3, 2011
Last updated: October 5, 2014
Last verified: October 2014
In severe injuries of the radial head with multiple, displaced fracture fragments and concomitant ligament damage, excision of the fragments and replacement of the radial head with a metallic implant are indicated. Current radial head implants are composed of metal or a combination of metal and high molecular weight polyethylene. The prostheses are assembled intra-operatively as a solid unit (monopolar) or as an articulating implant with motion between the stem and head (bi-polar). The stem of the implant is inserted into the proximal radius for support and can be classified as either loose-fitting or fixed. According to the investigators, there are no studies that directly compare the clinical and radiographic outcomes between different radial head implant designs. The purpose of this retrospective study is to compare the clinical and radiographic results in patients treated for an irreparable radial head fracture with either a smooth stem, bipolar radial head implant or a monopolar, in-growth radial head implant. The study findings may provide useful clinical information regarding the similarities and differences in these two implant designs.

Radial Head Fractures

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Comparison of Monopolar In-Growth and Loose Bipolar Radial Head Implants in the Treatment of Irreparable Radial Head Fractures

Resource links provided by NLM:

Further study details as provided by John Berschback, Northwestern University:

Primary Outcome Measures:
  • Disability of Arm, Shoulder, and Hand (DASH) [ Time Frame: 1 clinic visit ]

Enrollment: 41
Study Start Date: March 2010
Study Completion Date: September 2013
Primary Completion Date: June 2012 (Final data collection date for primary outcome measure)
Detailed Description:
Data has been completed.

Ages Eligible for Study:   18 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients suffering radial head fractures, with or without other elbow injuries, requiring radial head replacement

Inclusion Criteria:

  • Suffered radial head fracture requiring radial head replacement with the Katalyst or Acumed Radial Head Implant from 2002-2009

Exclusion Criteria:

  • Unwilling to provide informed consent
  • Traumatic brain injury that occurred at the time of elbow fracture
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01269840

United States, Illinois
Northwestern University/Northwestern Memorial Hospital
Chicago, Illinois, United States
Rush University/Midwest Orthopaedics at Rush
Chicago, Illinois, United States
North Shore University Hospital
Evanston, Illinois, United States
Sponsors and Collaborators
Northwestern University
Rush University
North Shore University Hospital
Study Director: John Berschback, MD Northwestern University
  More Information

Responsible Party: John Berschback, Orthopedic surgeon, Northwestern University Identifier: NCT01269840     History of Changes
Other Study ID Numbers: STU00008411
Study First Received: January 3, 2011
Last Updated: October 5, 2014

Additional relevant MeSH terms:
Fractures, Bone
Radius Fractures
Wounds and Injuries
Forearm Injuries
Arm Injuries processed this record on September 21, 2017