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The purpose of the study is to determine whether crosslinked Marathon and standard Enduron polyethylene liners show differences in bone loss around the hip implant.
Several institutions report very low wear rates with highly crosslinked polyethylene based on early clinical data. However, since bone loss typically appears after 5-year follow-up, the reduction in the incidence and extent of bone loss among total hip replacement patients with crosslinked Marathon liners, compared to those with standard Enduron liners, has not been as dramatic as the wear reduction. Despite the substantial reduction in wear that we observed at 5-year follow-up, the patients' perceptions of their outcomes remained similar among the Marathon and Enduron groups. This study will evaluate outcome at a minimum of 10-years after surgery among the same group of patients whose outcome was previously reported at 5-year follow-up. At 10-year follow-up, we anticipate that the reduction in wear associated with Marathon polyethylene will be associated with significant reductions in bone loss when compared to the Enduron polyethylene.
Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Total Hip Replacement
Anderson Orthopaedic Research Institute
Enrolling by invitation
Anderson Orthopaedic Research Institute
Published on BioPortfolio: 2014-08-27T03:13:47-0400
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Partial or total replacement of a joint.
Partial or total replacement of one or more FINGERS, or a FINGER JOINT.
The replacement of intervertebral discs in the spinal column with artificial devices. The procedure is done in the lumbar or cervical spine to relieve severe pain resulting from INTERVERTEBRAL DISC DEGENERATION.
Partial or total replacement of the CORNEA from one human or animal to another.
Partial or total replacement of all layers of a central portion of the cornea.
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Surgery is a technology consisting of a physical intervention on tissues. All forms of surgery are considered invasive procedures; so-called "noninvasive surgery" usually refers to an excision that does not penetrate the structure being exci...