What is acetabular loosening?
What is acetabular loosening?
Abstract. Late aseptic loosening of cemented acetabular components is governed by the progressive, three-dimensional resorption of the bone immediately adjacent to the cement mantle. This process begins circumferentially at the intraarticular margin and progresses toward the dome of the implant.
What causes loosening of hip replacement?
Over time, however, an implant may loosen from the underlying bone, causing the hip to become painful. The cause of loosening is not always clear, but high-impact activities, excessive body weight, and wear of the plastic spacer between the two metal components of the implant are all factors that may contribute.
What is aseptic loosening hip?
Aseptic loosening refers to the failure of joint prostheses without the presence of mechanical cause or infection. It is often associated with osteolysis (bone resorption) and an inflammatory cellular response within the joint.
How do you treat aseptic loosening?
To correct aseptic loosening, a revision surgery may be necessary. While secondary surgeries are known to be less successful than the primary operation, for a total hip arthroplasty, the failure rate accounted for 5% of cases reported after revision [83].
How do you stop Aseptics from loosening?
Preventive strategies. The best method of reducing aseptic loosening is to prevent the wear particles being produced in the first place. This can be done by addressing implant design, patient factors and intraoperative surgical factors.
Can a loose hip replacement be fixed?
Reoperation of a total hip replacement to resolve a painful hip condition and loss of motion due to a loosened prosthesis (artificial hip joint) is known as correction of a loose hip replacement.
How do you fix a loose hip?
Treatments for hip instability & hip dislocation
- Rest or moderate exercise.
- Physical therapy to strengthen the muscles around the hip and improve mobility.
- Minimally invasive surgery – like arthroscopic hip surgery – to tighten the ligaments in the hip.
Is aseptic loosening painful?
The most common cause for failure of implants is impaired implant fixation (76%), called aseptic loosening. This complication produces pain and instability, aggravated by activity and weight bearing.
How do you fix aseptic loosening?
How common is aseptic loosening?
Aseptic loosening has been reported to be one of the most common causes for revisions, accounting for almost 55% of hip [47] and 31% of knee [49] revisions.
What causes implant loosening?
Aseptic loosening can be the result of inadequate initial fixation, mechanical loss of fixation over time, or biologic loss of fixation caused by particle-induced osteolysis around the implant.
What causes acetabular loosening After primary Charnley total hip arthroplasty?
higher frequency of isolated acetabular loosening was associated with use of a 32-mm femoral head. Factors affecting aseptic failure of fixation after primary Charnley Total Hip Arthroplasty. Loosening of cobalt chrome beads from a porous-coated acetabular component.
Are cementless acetabular components used in total hip arthroplasty?
Background: The use of cementless acetabular components in total hip arthroplasty has gained popularity over the past decade. Most total hip arthroplasties being performed in North America currently use cementless acetabular components.
How does acetabular cup position affect hip arthroplasty results?
Acetabular cup position has a significant impact on the results of hip arthroplasty as it affects dislocation, abductor muscle strength, gait, limb lengths, impingement, noise generation, range of motion (ROM), wear, loosening, and cup failure. The variables in cup position are depth, height, and angular position (anteversion and inclination).
Does femoral head size affect acetabular loosening After primary Charnley total hip arthroplasty?
higher frequency of isolated acetabular loosening was associated with use of a 32-mm femoral head. Factors affecting aseptic failure of fixation after primary Charnley Total Hip Arthroplasty.
