• Cross-linked polyethylene liner dissociation from AMS-HA shell (KYOCERA Med, Osaka, Japan) occurred in 2 out of the 4153 (0.04%) cases approximately 10 years after undergoing surgery at our institute. (openorthopaedicsjournal.com)
  • An AMS-HA acetabular shell (outer diameter 44mm, inner diameter 38mm) with a cross-linked polyethylene (XLPE) liner was set in the acetabulum with four screws and a cementless proximal-hydroxyappatite-coated femoral component (a PerFix-HA #13-M stem) was used along with a 26 mm zirconia ball (Kyocera Medical, Osaka, Japan). (openorthopaedicsjournal.com)
  • Longevity Highly Cross-linked Polyethylene Clinical Value Dossier. (zimmerbiomet.com)
  • Much of Harris' research focuses on osteolysis, the deterioration of bone tissue around joint replacement implants, and developing highly cross-linked polyethylene to counter the issue of osteolysis. (wikipedia.org)
  • Fifteen years of wide spread use of highly cross-linked polyethylene in patients have shown it to be very effective in preventing osteolysis. (wikipedia.org)
  • Highly cross-linked polyethylene acetabular liner has better wear properties than UHMWP. (myorthoevidence.com)
  • 54 patients scheduled to receive hip replacements were randomized to the type of polyethylene material of acetabular liners with either a highly cross-linked polyethylene (HXLPE) or standard ultra high molecular weight polyethylene (UHMWPE) been used. (myorthoevidence.com)
  • We reviewed the advantages and disadvantages of ceramicon- polyethylene articulation in THA, hip simulator study and retrieval study for polyethylene wear, in vivo clinical results of THA using alumina ceramic-on-polyethylene bearing surfaces in the literature, and new trial alumina ceramic-onhighly cross linked polyethylene bearing surfaces. (openorthopaedicsjournal.com)
  • A premium next-generation highly cross-linked polyethylene. (unitedorthopedic.com)
  • Liner dissociation of polyethylene from a cementless acetabular socket following total hip arthroplasty (THA) is a rare complication. (openorthopaedicsjournal.com)
  • A 26 mm femoral head and CPE liner were used in both cases and the inclination degree of the acetabular socket was within 50°.There was no implant loosening in both cases. (openorthopaedicsjournal.com)
  • Although polyethylene (PE) liner dissociation from a cementless acetabular socket is not a highly frequently observed complication, it has been reported in particular models such as Harris-Galante cementless prostheses (Zimmer, Warsaw, Ind), etc. [1 - 7]. (openorthopaedicsjournal.com)
  • Further, liner dissociation from the acetabular socket is also observed in Hard-on-hard THA using a sandwich-type liner [8 - 14]. (openorthopaedicsjournal.com)
  • however, there are no reports on liner dissociation when PE liner is used in combination with an AMS-HA acetabular shell. (openorthopaedicsjournal.com)
  • We report a prospective study of the liner-metal interfaces of modular uncemented acetabular components as sources of debris. (elsevierpure.com)
  • Exactech Connexion GXL acetabular polyethylene liners used in the following systems: Catalog numbers 136-32-XX, Novation GXL Liner, +5mm Lateralized, 32mm. (fda.gov)
  • Like most conventional systems, Reverse HRS consists of a femoral stem, an acetabular cup and a cobalt-chrome ball that articulates within a polyethylene liner. (orthoworld.com)
  • Unlike existing total hip replacement systems, the ball is placed on a trunnion within the acetabular cup instead of the femoral stem, and the polyethylene liner is attached to a femoral cup, which then attaches to the femoral stem, as opposed to the polyethylene liner being attached to the acetabular cup. (orthoworld.com)
  • This ball-the femoral head-forms a hip joint when it is placed inside a polyethylene liner and acetabular shell. (injurylawyer-news.com)
  • The Pinnacle device is different in that the metal ball is in contact with the metal acetabular liner. (injurylawyer-news.com)
  • Currently, total hip arthroplasties consist of a femoral stem prosthesis, a modular femoral head, a modular acetabular liner, and an implanted acetabular cup (Figs. 1, 2). (fixbones.com)
  • Fig. 1 Illustration of pink ceramic femoral head, white polyethylene liner, and metal acetabular cup. (fixbones.com)
  • C: Acetabular cup with ceramic femoral head and ceramic liner. (fixbones.com)
  • The acetabular liner is a polyethylene implant that is generally impacted into the acetabular cup. (fixbones.com)
  • During the life of a total hip arthroplasty, wear primarily affects the polyethylene acetabular liner. (fixbones.com)
  • For example, the section of the knee tibia plate that interacts with the femoral component is protected with a polyethylene liner. (rosler.com)
  • Using an asymmetric crosslinked polyethylene liner in primary total hip arthroplasty is associated with a lower risk of revision surgery : an analysis of the National Joint Registry. (uw.edu)
  • Atlanta, GA (2/15/2022) On February 11, 2022, Pope McGlamry filed a federal lawsuit against orthopedic device manufacturer, Exactech, Inc. The lawsuit alleges that an implant used during a routine total hip arthroplasty surgery was defectively designed, manufactured, marketed, and sold by Exactech because it contains a polyethylene liner prone to a high rate of early failure from wear, causing severe secondary osteolysis (bone degeneration). (pmkm.com)
  • Additionally, the Plaintiff alleges Exactech negligently made misrepresentations about the 59% reduced wear rate for the Connexion GXL polyethylene liner and that it had "enhanced polyethylene" with a lower wear rate. (pmkm.com)
  • The Exactech hip liner at issue is the Connexion GXL Liner, which is made of irradiated ultra-high molecular weight polyethylene (UHMWPE). (pmkm.com)
  • However, in July 2021, Exactech recalled its Connexion GXL acetabular liner following concerns from the medical community that the polyethylene liner was prone to a high rate of early failure from wear and severe secondary osteolysis. (pmkm.com)
  • The hip socket (into which the ball fits) is replaced with a titanium shell with an artificial liner made of ceramic or hardwearing polyethylene (which sometimes can be fixed directly with bone cement). (gilesstafford.com)
  • This consists of a titanium hemispherical shell with an inner polyethylene or ceramic liner. (gilesstafford.com)
  • U-Motion II is a comprehensive acetabular hip system offers a wide range of acetabular cup, liner, and femoral head prostheses options for primary and revision hip arthroplasty. (unitedorthopedic.com)
  • In vivo oxidation of retrieved crosslinked ultra-high molecular-weight polyethylene acetabular components with residual free radicals, J Arthroplasty. (zimmerbiomet.com)
  • The results were obtained considering a Ultra High Molecular Weight PolyEthylene, UHMWPE, cup and were compared with results from the literature, showing a good agreement in terms of total volume wear of the cup. (mdpi.com)
  • LINK has decades of experience in the use of UHMWPE, and this was particularly valuable in the design of the cemented acetabular cups. (link-ortho.com)
  • In addition to the Standard UHMWPE, we also supply the system in acetabular cups made of X-LINKed UHMWPE, This highly crosslinked polyethylene make it possible to achieve even lower abrasion levels. (link-ortho.com)
  • The LINK FAL Polyethylene Acetabular Cup is a cemented acetabular cup made of UHMWPE. (link-ortho.com)
  • Hip simulator studies and short-term in vivo measurements suggest that the wear rate of some types of HXLPE is significantly less than conventional ultrahigh-molecular-weight polyethylene (UHMWPE). (ox.ac.uk)
  • Plastics, primarily polyethylene (for example, UHMWPE), have also seen increased use for joint reconstruction implants. (rosler.com)
  • Feel confident to meet the needs of your patients with the versatility of the Trident Acetabular Shell system, which can be used with Stryker's advanced bearing options, like MDM X3, X3 Polyethylene, and Trident Constrained Liners. (stryker.com)
  • The wearing process in polyethylene liners produces small particles of polyethylene debris. (fixbones.com)
  • In marketing its Connexion GXL Liners, Exactech represented that the liners had less wear and would last longer than its competitors' polyethylene liners. (pmkm.com)
  • In addition to the hip recall, on February 7, 2022, Exactech also recalled some of its knee and ankle devices that also have polyethylene liners that lead to accelerated excessive wear, bone loss, and failure requiring corrective surgery. (pmkm.com)
  • Likewise, the acetabular cup of a hip implant can be lined with polyethylene, whereas the femoral head on the hip stem interacting with the acetabular cup may be made of metal. (rosler.com)
  • METHODS: This study introduces Total Hip Arhtroplasty Automated Implant Detector (THA-AID), a DL tool trained on 241,419 radiographs that identifies common designs of 20 femoral and 8 acetabular components from AP, lateral, or oblique views and reports prediction uncertainty using conformal prediction and outlier detection using a custom framework. (bvsalud.org)
  • Twelve of the 19 (63.2%) studies investigated the application of TAL as an anatomical landmark for locating acetabular component position in THA. (biomedcentral.com)
  • The high quality of the polyethylene demonstrably minimizes abrasion suffered by the components, and thereby reduces the risk of osteolysis. (link-ortho.com)
  • CT scan coronal (A) and axial (B) images showing significant osteolysis behind the previously implanted acetabular cup. (fixbones.com)
  • Therefore, in those patients, alternative bearing surfaces should reduce polyethylene wear and osteolysis that have been present in previous studies using traditional metal-on-polyethylene (MOP). (biomedcentral.com)
  • Hybrid hip replacements combine the use of a cemented femoral stem with an uncemented acetabular cup. (gilesstafford.com)
  • Additionally, patients with acetabular fractures are generally young and have posttraumatic osteoarthritis that results from a high activity level. (biomedcentral.com)
  • Harris was one of the two designers to create the first successful cementless acetabular component. (wikipedia.org)
  • Oonishi H, Saito M, Kadoya Y. Wear of high-dose gamma irradiated polyethylene in total joint replacement - longterm radiological evaluation. (zimmerbiomet.com)
  • In hip simulator study, reports revealed significant wear reduction of the alumina ceramic-on-polyethylene articulation of THA compared with metal-on-polyethylene bearing surfaces. (openorthopaedicsjournal.com)
  • However, medium to long-term clinical studies of THA using the alumina ceramic-on-polyethylene are few and the reported wear rate of this articulation is variable. (openorthopaedicsjournal.com)
  • Alumina ceramic was introduced as a bearing surface in the 1971 as an alternative to the metal on-polyethylene couplings. (openorthopaedicsjournal.com)
  • Harris is also recognized for performing the world's first successful total hip replacement in a patient with a total congenital dislocation of the hip and for developing the first effective cement-free acetabular component. (wikipedia.org)
  • The Reverse HRS is a metal-on-polyethylene reverse geometry hip prosthesis designed to improve stability at extended ranges of motion and reduce the risk of dislocation. (orthoworld.com)
  • This was the first time screws were put through the acetabular component to fix it to the skeleton. (wikipedia.org)
  • Sterilant (hydrogen peroxide) used in acetabular cup hip prosthesis component was not evaluated to confirm the biocompatibility of the residual sterilant. (fda.gov)
  • Therefore, how to accurately locate the position of the acetabular component has become a very critical step in THA. (biomedcentral.com)
  • As an important anatomical structure of the hip joint, the transverse acetabular ligament (TAL) is helpful for acetabular component orientation in THA. (biomedcentral.com)
  • Analysis revealed that TAL is a reliable anatomical landmark for acetabular component orientation within the safe zone in THA. (biomedcentral.com)
  • TAL can reliably be used to align the acetabular component in the safe zone for anteversion and inclination in THA. (biomedcentral.com)
  • So accurate orientation of acetabular component plays a very important role in determining the outcome of THA surgery. (biomedcentral.com)
  • defined the "safe zone" for acetabular component placement as 5°-25°anteversion angle and 30°-50°inclination angle. (biomedcentral.com)
  • Whether done by freehand or with mechanical guides, ignoring these factors and simply referring to the safe zone can lead to misjudgment of acetabular component orientation. (biomedcentral.com)
  • They thought that TAL's reliability as a landmark for acetabular component orientation needed more research to confirm. (biomedcentral.com)
  • Only abstracts that evaluated the value of TAL as a guide for acetabular component orientation in THA were included in this analysis. (biomedcentral.com)
  • Patients who had an early postoperative infection are managed with débridement, replacement of the polyethylene (PE) insert of the acetabular/tibial component, retention of the prosthesis, and IV administration of antibiotics for 6 weeks. (medscape.com)
  • Removal of the original PE insert permits greater access to the site of the acetabular/tibial component for débridement and removal of a possible nidus of infection. (medscape.com)
  • The polyethylene component has gone through two generations, termed "conventional polyethylene," (CP) and "highly crossed-linked polyethylene" (XPE). (fixbones.com)
  • All patients received the same cemented stem and an uncemented acetabular component. (ox.ac.uk)
  • When the hip socket, known medically as the acetabular component, is well-fixed, the doctor can. (derekamanatullah.com)
  • Polyethylene particles disperse into the joint fluid surrounding a THA. (medscape.com)
  • The number of foreign body inflammatory cells (macrophages and giant cells) present correlates with the number of polyethylene wear particles. (medscape.com)
  • They were similar to the particles seen in the base resin used in the manufacture of the acetabular implants. (syr.edu)
  • Most of the polyethylene particles were too small to be seen by light microscopy. (syr.edu)
  • An artificial acetabular 'cup' or 'shell' sits inside the hip socket, and provides a new surface for this section of the hip joint. (gilesstafford.com)
  • Proprietary electron beam process delivers 10Mrad dosage for greater crosslinking, resulting in superior long-term polyethylene wear performance compared to conventional polyethylene. (zimmerbiomet.com)
  • Joint articulation was either conventional metal-on-polyethylene (MOP) or ceramic-on-ceramic (COC). (biomedcentral.com)
  • Surgical indications for management of acetabular wear in THA are basically the same as those for revision THA. (medscape.com)
  • Polyethylene manufacturing characteristics have a major effect on the risk of revision surgery in cementless and hybrid total hip arthroplasties. (uw.edu)
  • This surface design increases the stability of the cup in the acetabulum, thereby largely eliminating the risk of loosening This cup design is used successfully in the FAL and IP Polyethylene Acetabular Cups and also in the Lubinus Acetabular Cup. (link-ortho.com)
  • Anteversion and vertical tilt of the acetabular prostheses in 50 consecutive total hip arthroplasties were prospectively evaluated during surgery (by the surgeon, using an alignment guide) and radiographically (calculated). (nih.gov)
  • The R3 System offers a wide range of possibilities, so no longer are bearing options limited by the choice of acetabular shell. (smith-nephew.com)
  • Mr Stafford prefers Corin's Trinity™ acetabular system. (gilesstafford.com)
  • In addition to the material properties, the external shape of the acetabular cups helps to prevent loosening. (link-ortho.com)
  • Another feature of the cemented polyethylene acetabular cups is the high cup rim, which projects beyond the spherical shape. (link-ortho.com)
  • Acetabular Cups cemented - Impl. (link-ortho.com)
  • Measurement of polyethylene wear in metal-backed acetabular cups. (jmedicalcasereports.org)
  • Six patients in the ORIF group required acetabular reconstructive procedures to address bony defects compared to seven patients in the non-ORIF group ( p = 0.09). (biomedcentral.com)
  • Accuracy of methods to measure femoral head penetration within metal-backed acetabular components. (jmedicalcasereports.org)
  • Although deep learning (DL) tools have been attempted to automate this process, existing approaches are limited by classifying few femoral and zero acetabular components, only classify on anterior-posterior (AP) radiographs, and do not report prediction uncertainty or flag outlier data. (bvsalud.org)
  • RESULTS: THA-AID achieved internal test set accuracies of 98.9% for both femoral and acetabular components with no significant differences based on radiographic view. (bvsalud.org)
  • Adding conformal prediction increased true label prediction by 0.1% for acetabular and 0.7 to 0.9% for femoral components. (bvsalud.org)
  • Surgeons dealing with the complications of acetabular wear in THA must be familiar with the anatomy of the region. (medscape.com)