modular neck stem

Stryker Hip Replacement | Models Causing Complications

Unlike typical hip implant systems, which include a one-piece neck and stem called a monoblock design, Stryker's Rejuvenate, ABG II and other TMZF systems included several neck and stem components. The ABG II system had eight right stems, eight left stems and 10 modular necks, which were supposed to offer greater stability and less bone ...


What is a Modular-Neck Hip Implant? | Hip Implant Lawsuit

A modular-neck hip implant is a type of hip replacement that has an interchangeable femoral neck (the part between the femoral stem and the head). This allows a surgeon to fit different-sized components to custom fit the device to match each patient's unique anatomy. You may have heard about the recent hip implant recalls involving metal-on ...


Treatment of the Failed Modular Neck Stems: Tips and ...

Jul 01, 2016· Corrosion at modular head-neck and stem-neck junctions may lead to ALTRs 3, 14. • Elevated serum ion levels can be present with non-MoM articulations . • Metal ion levels do not always correlate with the extent of ALTRs . Download : Download high-res image (340KB) Download : Download full-size image; Fig. 3.


Cementless modular neck stems: are they a safe option in ...

Oct 29, 2017· The modular neck used in the present study was based on finite elements, and it had a coupling neck-stem elliptical dual radius. In an in vitro study, Jauch et al. [ 39 ] compared micromovements on the neck-stem joint of several THA models with modular necks.


Does Choice of Head Size and Neck Geometry Affect Stem ...

Dec 14, 2012· For the modular-neck stems and their complex configurations, however, there are only a few reports in the literature [3, 4, 6]. In a study by Umeda et al. strain gauge measurements of a modular cementless stem implanted in a synthetic femur were performed. Changing the neck from straight to anteverted or retroverted caused a large increase in ...


Fracture of Revision Modular Femoral Stem - MedCrave online

Oct 26, 2016· In summary, the precise cause of fracture of modular femoral stems is most likely multifactorial and remains unknown. Increased BMI, fretting corrosion, long varus neck, lack of osseous support, patient activity level, all together create a local microenvironment that can cause a fracture in neck-stem junction.


Modular Neck Cementless Femoral Components ...

May 22, 2016· The additional junction inherent in the modular neck design transmits bending and axial stresses at the neck–shaft junction in a unique manner. This has been linked, in certain systems, to decreased mechanical resistance, causing fretting and crevice corrosion in the "pocket" at the neck–stem junction (26,27,28,29,30,31).


Defining The Role Of Modular Stem Designs In THA

cementless stem 82 stems implanted. 6. UniSyn (Hayes Medical) 50 stems implanted. 7. Cremascoli Modular Neck (Wright Medical) 107 stems implanted. Results 12 femoral component failures have occured 2 in a c.c. proximal modular neck cemented stem (fig. A). Unsupported Stems Will Fail Regardless of Fixation/Material/ Design (cement/cementless ...


(PDF) Complications of Modular Neck-Stems

Modular neck stems allow for optimization of joint biomechanics by restoring anteversion, offset, and limb length. A potential disadvantage is the generation of metal ions from fretting and ...


Fracture of Revision Modular Femoral Stem

form a protective oxide layer. In the stem junctions (neck-stem, neck-head) this oxide layers are disrupted thus increasing the risk [7]. Here we present a case of modular tapered femoral stem fracture and some technical aspects of THA that may increase the risk of such complication. Case Presentation


Stryker Rejuvenate Hip Recall Highlights Modular Neck Stem ...

Jul 13, 2012· The Stryker Rejuvenate Modular and ABG II modular-neck hip stem recall was announced by the manufacturer last week, indicating that the artificial hip component has been associated with fretting ...


Modular versus Nonmodular Neck Femoral Implants in Primary ...

Both stems are identical except the modular neck stem has a separate neck piece that allows for 60 different options for head center versus 10 options with the nonmodular neck. In all cases, the same acetabular components were used, which consisted of a Trilogy ® fiber metal-backed cup and metal-on-polyethylene bearing surface with highly ...


Early fracture of the modular neck of a MODULUS femoral stem

the distal stem, but it was not possible without risking extensive damage to the bone. Leaving the distal stem in situ, the modular neck was replaced with a new 135 standard-offset modular neck and a Delta ceramic head (32/0 mm). The greater trochanter was then reattached using a pin-sleeve system (AI-medic, Tokyo, Japan)


Stryker Modular Hip Settlement

Feb 22, 2021· 2020 Settlement Program Reaches 96% Enrollment of Additional Registered Eligible Patients. Stryker Orthopaedics and Court-appointed committees of attorneys representing Rejuvenate Modular Neck Hip Stem and ABG II Modular Neck Hip Stem plaintiffs in New Jersey Multicounty and Federal Multidistrict litigations reached an agreement to compensate certain additional eligible U.S. …


Australia – ABGII Modular Femoral Stem and Modular Neck ...

Jul 29, 2012· The ABG II Modular Femoral Stem and Modular Neck is a modular hip replacement system that consists of two components: a stem. The stem is inserted into the patient's femur and the neck is then inserted firmly into the femoral stem. The neck is supplied in a variety of lengths and angles, allowing the surgeon to adjust the hip prosthesis ...


(PDF) Modular neck femoral stems - ResearchGate

A modular neck–stem has been shown to produce. a better outcome and range of movement with reduced. rates of osteolysis compared with a standard uncemented. stem in patients with dysplasia. 40


Total Hip System P R O D U C T C ATA L O G

Modular Neck Technology Seat stem in best possible bone stock Control leg length, offset, and version Multiple Stem Options PROFEMUR® Plasma Z Hip Stem PROFEMUR® Z Hip Stem PROFEMUR® T Hip Stem PROFEMUR® RENAISSANCE® PROFEMUR® R Hip Stem PROFEMUR® RAZ Hip Stem PROFEMUR® LX Hip Stem PROFEMUR® Xm Hip Stem PROFEMUR® TL Hip Stem Ease of Use


Interchangeable neck failures of bi-modular femoral stems ...

Sep 16, 2020· In modular stem prosthesis, micro-movements at the stem-neck junction occur and the oxide layer falls off, exposing titanium alloy to bodily fluids. This so-called mechanically induced crevice corrosion is the main cause of modular stem prosthesis failure besides pitting and fretting corrosion .


Hip Replacement Products - Zimmer Biomet

Anatomic individually or extremely difficult reconstruction cases may require the development of a patient-specific hip implant. In such cases, Zimmer Biomet's Patient-Matched Implant (PMI©) department is available to work directly with surgeons to address the most severe cases of bone loss or deformity.


Titanium neck-titanium stem taper corrosion in a modular ...

Jun 01, 2019· Abstract. An 81-year-old woman presented with progressive groin pain after metal-on-polyethylene total hip arthroplasty with a modular neck stem and was found to have adverse local tissue reaction. As we report for the first time with this implant, we observed titanium neck-titanium stem taper corrosion intraoperatively.


Zimmer® M/L Taper Hip Prosthesis with Kinectiv® …

morphologies. The modular stem and neck components are designed to help the surgeon restore the hip joint center intraoperatively by addressing leg length, offset, version and proximal stem fit independently. The system's femoral version design and array of neck options efficiently targets the broad range of male and patient anatomies.


Dissociation of Modular Total Hip Arthroplasty at the Neck ...

Sep 02, 2019· Most cases reported are related to the dissociation of the neck-head interface and only an extremely small percentage is due to dissociation at the neck-stem interface. We report a case with dissociation at the neck-stem interface generated by a fall. Possible reasons for dissociation of the modular system are presented.


Stryker Initiates Voluntary Recall of Modular Neck Stems ...

Jul 12, 2012· If you are a patient who has received a Rejuvenate Modular or ABG II modular-neck stem, please contact your surgeon. If you are not sure whether you have had one of these products implants, contact your surgeon or review your medical records in order to be sure. A call center is available to patients at 1-888-317-0200.