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A bipolar cup is

a component used in some hip surgeries that replaces only the head of the femur, making it a type of hip hemiarthroplasty, not a total hip replacement. It consists of an outer shell that articulates with the acetabulum (the socket) and an inner head that articulates with the femur. This system is often chosen for elderly patients with fractures or other conditions like avascular necrosis, providing stability and a reduced risk of wear and dislocation compared to some other procedures.

Dual articulation: The bipolar cup has two articulating surfaces. The inner surface of the cup articulates with a new femoral head (the part that replaces the damaged one). The outer surface of the outer shell moves within the hip socket, which is not replaced.
Function: This design is intended to reduce friction and wear compared to a standard hemiarthroplasty where the femoral head rubs directly against the acetabulum.
Components: A typical bipolar system includes a metal outer shell, a highly cross-linked polyethylene (or other material) inner liner and bearing surface, and a locking ring that secures the inner head to the outer shell.

Displaced femoral neck fractures in elderly patients: It is often used in elderly individuals who have had a hip fracture and are not active enough for a full total hip replacement.
Avascular necrosis of the femoral head: It can be an option for patients with this condition where the blood supply to the femoral head is compromised.
Revision surgeries: It may be used in revision cases where flexibility or options for adjusting joint alignment are needed.

Modular design: Many bipolar systems are modular, allowing for intraoperative adjustment and customization for optimal joint alignment.
Materials: Components are constructed from biocompatible materials such as cobalt-chrome or implant steel for the shell and highly cross-linked polyethylene for the bearing surface.
Improved stability: The system can provide improved stability and mobility compared to some older hemiarthroplasty designs.

Modular Bipolar System - Orthopaedic-Implants.com
The Modular Bipolar Cup is engineered to provide enhanced flexibility and stability in hip arthroplasty procedures. Its modular de...
www.orthopaedic-implants.com
Hip Hemiarthroplasty (Bipolar) - The Centers for Advanced Orthopaedics
Bipolar Cup Acetabular head for hip hemiarthroplasty - B. Braun
Description. The Aesculap® Bipolar Cup is combined with a modular prosthesis head, which is connected using forceps for the lockin...
B. Braun

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Latitud Bipolar Cup Hip Implant System

Meril Life

https://www.merillife.com › our-products › orthopedics

Meril Life

https://www.merillife.com › our-products › orthopedics

Meril's Latitud Bipolar Cup offers a durable, precision-engineered solution for hip replacement, ensuring better mobility and patient outcomes.

Total Hip Arthroplasty Bipolar Cup System from www.merillife.com

Dual mobility cups in total hip arthroplasty - PMC

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › articles › PMC4095010

National Institutes of Health (.gov)

https://pmc.ncbi.nlm.nih.gov › articles › PMC4095010

by I De Martino2014Cited by 214 — Conversion to a bipolar arthroplasty and a constrained liner are salvage procedures for recurrent instability that provide stability but reduce functional ...

Bipolar Cup System,Medical Device Manufacturers

Double Medical

https://www.doublemedicalgp.com › Hip Joint

Double Medical

https://www.doublemedicalgp.com › Hip Joint

Features. The optimal locking mechanism eliminates the risk of head dislocation. Ease for installment, disassemble and surgical operation.

Total Hip Arthroplasty Bipolar Cup System from www.doublemedicalgp.com

Videos

AESCULAP® Bipolar Cup & Excia® T Cemented

YouTube B. Braun Group

May 21, 2024

Hip Hemiarthroplasty Bipolar Cup Instrument Set | Aysam

YouTube Aysam Orthopaedics & Medical Devices

Jul 16, 2024

Treatment of a Femoral Neck Fracture using Bipolar Cup ...

Vumedi

May 14, 2024

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Bipolar II Cap - Hip

United Orthopedic Corporation

https://www.unitedorthopedic.com › Hip

United Orthopedic Corporation

https://www.unitedorthopedic.com › Hip

The Bipolar II Cap is available in sizes ranging from 38 mm to 60 mm, with material options of UHMWPE and E-XPE. Product Features.

Total Hip Arthroplasty Bipolar Cup System from www.unitedorthopedic.com

Gladiator® Bipolar Hip System - MicroPort Orthopedics

MicroPort Orthopedics

https://www.microportortho.com › products › hips › gla...

MicroPort Orthopedics

https://www.microportortho.com › products › hips › gla...

The Gladiator® Bipolar Acetabular System is a bipolar hip design that features a polyethylene bearing surface with a lock detail enhanced for strength.

Hip Solutions | Innovative Medical Devices & Solutions

MicroPort

https://microport.com › ... › Orthopedics

MicroPort

https://microport.com › ... › Orthopedics

MicroPort^® Orthopedics offers a variety of acetabular cup systems designed to meet the needs of any total hip arthroplasty approach or surgeon preference.

Hip Replacement & Reconstruction Solutions - J&J MedTech

jnjmedtech.com

https://www.jnjmedtech.com › en-US › specialty › hip-r...

jnjmedtech.com

https://www.jnjmedtech.com › en-US › specialty › hip-r...

Our hip solutions combine clinically-proven implants 1 with enabling technology to offer a streamlined approach to Total Hip Arthroplasty (THA).

Total Hip Arthroplasty Bipolar Cup System from www.jnjmedtech.com

ACTIS Total Hip Solutions

EMPHASYS™ Femoral...

C-STEM™ AMT

Dissociation of Bipolar Hemiarthroplasty of the Hip

Arthroplasty Today

https://www.arthroplastytoday.org › article › fulltext

Arthroplasty Today

https://www.arthroplastytoday.org › article › fulltext

by A Vasileios2022Cited by 5 — Component dissociation after a bipolar hemiarthroplasty is an uncommon complication that usually necessitates reoperation due to difficulties in closed ...

Total Hip Arthroplasty Bipolar Cup System from www.arthroplastytoday.org

THR vs. Modular Bipolar Prosthesis: A Comprehensive ...

Uteshiya

https://www.uteshiyamedicare.com › Blog

Uteshiya

https://www.uteshiyamedicare.com › Blog

Jan 28, 2025 — It replaces the whole hip joint, including both sides that move together. · Usually, it has a femoral stem, an acetabular cup, and an interior ...