Choosing a knee joint endoprosthesis: service life, materials, prices. About Smith & Nephew About Smith & Nephew

Endoprostheses hip joint Smith Nephew have a wide range of products, allowing you to choose the right implant for each patient. These are high-quality and durable products with certified production technology and materials. Sold in many countries and recommended by doctors as a convenient, effective and safe means of replacing damaged joints.

Characteristics of Smith Nephew endoprostheses

Designed for the following functions:

• relieve stress on the hip joint;
• speed up the process of traditional therapy;
• relieve pain syndrome;
• restore limb mobility;
• improve patient comfort;
• stop the deformation and development of the disease.

Smith Nephew hip endoprostheses are created by leading manufacturers in this field. With their systematic wearing, the load on the injured joint is reduced and mobility is restored to the patient. Made from materials certified by a safety certificate, we constantly improve manufacturing technologies. They are mobile, highly durable and lightweight.

Assortment

The hip endoprosthesis from Smith & Nephew is produced in the following types:

• OXINIUM;
• XLPE;
• Birmingham Hip;
• LEGION;
• ANTHOLOGY;
• REDAP.

You should choose the type of endorotesis based on the doctor’s recommendations, and not the price of the product. All Smith Nephew products have quality certificates that must be checked before purchase.

Product OXINIUM

Made from an oxidized alloy of zirconium and niobium. It is more reliable and durable than cobalt-chromium alloy and is lighter. The development allows us to reduce the coefficient of friction and make it suitable for people who are allergic to nickel or hypersensitive to this material. The head, legs and swivels are made from the same material.

XLPE implant

The main material is cross-link polyethylene. It is produced through an irradiation process. It has medical confirmation that wear products are produced in smaller quantities. When combined with cobalt, knee and hip implants are called VERILAST. Recommended by doctors for patients with joint deformities.

SMF implant

Femoral head replacement with OXINIUM.

This is a short product that is 20% shorter in length than similar implants. Has a cementless installation core. Due to the successful shape, the bone tissue of the pelvis and hip is preserved and is less depleted. In this case, increased resection of the femoral neck may be allowed. After wearing an SMF prosthesis, the chance of having a more successful surgical operation increases.

Birmingham Hip

Used for superficial prosthetics of an injured joint. Because of this technology, the head of the femur is retained and does not require replacement with an implant due to grinding and enclosing the product in a shell. Patients wearing Birmingham Hip can safely perform loads of varying difficulty. He has low risk loss and a high rate of bone tissue preservation. The material used to manufacture all parts is high-carbon cobalt-chromium-molybdenum alloy.

Manufacturers design implants based on average sizes. This usually narrows the choice down to 2-3 suitable prostheses. However, some companies, such as Zimmer and Biomet, make gender-specific models. According to them, the products allow us to take into account and correct anatomical differences between men and women.

An example of a “female” knee implant from Smith@Nephew. There are no visual differences from the usual one.

There is no convincing evidence that gender-specific endoprostheses are more effective. Many experts are confident that this approach is nothing more than marketing ploy, designed to increase sales.

Features of devices and their manufacturers

According to WHO, partial knee replacement is suitable for only 10% of patients. The decision about the optimal treatment method for you is made by the surgeon.

Factors that determine the correct choice of implant:

• available range of motion (maximum flexion, extension);
• customizability (size, shape, gender differences);
• stability;
• patient's activity level.

Discuss important functions with the surgeon, clarify which type of device best suits the needs, anatomy, and type of disease. The decisive factors are the success of the endoprosthesis, the duration of its use in medical practice and the period of use.

A type of implant for partial knee replacement.

The most popular models and manufacturers

Endoprosthesis service life

The service life of an artificial knee joint is 10-30 years. It depends on the quality of the material used, the type of prosthesis, the technique used, the period, the patient’s compliance with operating rules and doctor’s instructions, the presence of repeated injuries, and the patient’s weight. Best reviews obtained titanium alloys; The warranty period for such prostheses is 15-20 years.

75% of patients use an artificial prosthesis throughout their lives without the need for replacement.

Oncological endoprosthesis

The femur and tibia often become sites for the development of tumors and oncological diseases. Previously, such a diagnosis was considered a clear contraindication to the endoprosthesis procedure, but manufacturers have developed oncological endoprostheses that provide outstanding results even in the presence of extensive bone defects.

The essence of oncological endoprostheses is a more extensive method of fixation in the bone, so they are more voluminous.

The bone sections are resected and replaced with artificial implants. If the patient’s disease is malignant, the devices can save his life and restore mobility.

Domestic prostheses

Speaking about the Russian practice of endoprosthetics, we note the presence of a number of centers with experienced surgeons performing over 1000 operations per year. This breakthrough was ensured by the federal program for financing operations. Therefore, the statement that good surgeons can only be found abroad is not true.

Unfortunately, the same cannot be said about implants. Despite ongoing developments, domestic endoprostheses are inferior to imported ones in terms of quality and reliability, although they remain in the same price segment.

Approach the choice of a suitable implant responsibly, study the information about available models, and you will definitely choose the right look. Consider the opinion of the operating surgeon, your own activity,

Leading manufacturers, in the context of the development of technology and minimally invasive surgical intervention, manufacture hip joint endoprostheses from metal alloys or ceramics, minimizing the disadvantages of materials and their impact on the human body. Smith Nephew has managed to turn the disadvantages of chromium, cobalt, nickel, ceramic coating and other components into advantages.

Indications

Replacement of natural bone structures with a prosthesis is recommended if the following problems exist:

• arthrosis of 1-3 degrees with deformation on one or both sides;
• coxarthrosis;
• Bekhterev's disease;
• fractures in old age;
• pathogenic formations in the neck and head of the femur;
• joint necrosis grade 3-4;
• rheumatoid arthritis;
• damage to the pelvic area with the risk of loss of musculoskeletal functions;
• severe injury to the acetabulum.

You should consult your doctor in advance about using a particular endoprosthesis.

Types of Smith and Nephew prostheses

Oxinium dentures

Oxinium is a unique material; an implant made from it has the following characteristics:

• Acceptable increased load, the metal alloy is not afraid of vigorous physical activity.
• Contains a minimal amount of nickel (less than 1%).
• Does not cause allergies due to the use of biologically compatible elements - niobium and zirconium.
• It has structural elasticity, which eliminates the possibility of breakage.
• The prosthesis can be used for a long time (from 15 years).
• It is resistant to corrosion.

POLARSTEM

Metal hip rod without cement fastening. The big advantage of the prosthesis is huge selection sizes allowing minimally invasive surgery to be performed on patients of all ages. The design has a reinforced center, a self-fastening system, and a tapered end.

The design includes a cup for the acetabulum and a protective plate for the femoral head. The same layer of protection ensures the mobility of the system. R3 has a ceramic and polyethylene design, both materials are resistant to heavy loads and biochemical processes in the patient’s body. Stability is ensured by the porous surface of the outer side of the bowl. The prosthesis can be used for up to 20 years.

11.05.2017

About Smith & Nephew.

The Smith & Nephew company was founded back in 1856 in London by Thomas James Smith. Initially it was a small pharmacy. Thanks to skillful management, the business rapidly developed, first into a chain of pharmacies, and then, quite large company for the supply of dressings to military hospitals. In the post-war period, Smith & Nephew opened its own production.

The first adhesive plaster was created in the laboratory of this company. In 1998, the main areas of activity of the concern were endoprosthetics, sports medicine and dressings. Since 2014, the production of sophisticated cold plasma equipment for otolaryngological and neurosurgical operations began.

Today, Smith & Nephew is the largest pharmaceutical concern producing medical equipment and medicinal products, which are sold in 120 countries around the world. More than 15,000 employees work productively to improve people's quality of life. The headquarters is in the UK. The main production facilities are concentrated in Hamburg. However, the company's branches also operate in other European countries. Product output covers several areas of medicine: orthopedics, endoscopy, and wound therapy. Each area employs highly qualified specialists and uses the latest technologies.

An innovative approach to the development of new types of products has led to the fact that orthopedic prostheses, dressings and antimicrobial drugs for wound regeneration often have no analogues. In particular, Iruksol ointment, which you can order on our website, is the number one remedy in Europe for healing wounds of any etiology! There is also a variation designed specifically for diabetics - Noruxol.

When purchasing Smith & Nephew products, you can be 100% confident in their highest quality.

The company's orthopedic products provide high-quality prosthetics for hip, knee and shoulder joints, as well as bone tissue after bone fractures. The use of fundamentally new materials has led to the fact that such prostheses and materials will maximize the function of the joints. This allows patients to lead an active life after prosthetic surgery.

Wound treatment drugs are saving patients from limb amputation due to diabetic complications.

Today, the company's products are an example of high quality and an innovative approach to the treatment of diseases of the musculoskeletal system and wounds. On our website you can order Iruksol ointment, which has no analogues in wound healing! And also a variation for diabetics - Noruxol.

You can find detailed information about the company's activities on its official website

Oxinium dentures

• Increased load is permissible; the metal alloy is not afraid of vigorous physical activity.
• Contains a minimal amount of nickel (less than 1%).
• Does not cause allergies due to the use of biologically compatible elements - niobium and zirconium.
• It has structural elasticity, which eliminates the possibility of breakage.
• The prosthesis can be used for a long time (from 15 years).
• It is resistant to corrosion.

POLARSTEM

Metal hip rod without cement fastening. A big advantage of the prosthesis is the huge selection of sizes, which allows minimally invasive surgery for patients of different ages. The design has a reinforced center, a self-fastening system, and a tapered end.

System R3

The design includes a cup for the acetabulum and a protective plate for the femoral head. The same layer of protection ensures the mobility of the system. R3 has a ceramic and polyethylene design, both materials are resistant to heavy loads and biochemical processes in the patient’s body. Stability is ensured by the porous surface of the outer side of the bowl. The prosthesis can be used for up to 20 years.

Birmingham Hip

The femoral head endoprosthesis, created by Smith and Nephew, is used for superficial surgery of the hip joint. The implant only envelops the bone, preserving the maximum amount of natural bone structures. Birmingham Hip is suitable for people aged or with a sedentary lifestyle, since the design eliminates overexertion and active movements. The prosthesis consists of a cementless acetabular cup, a cemented femoral head and a stem. The outer surface is smoothly polished.

Manufactured hip replacements have high quality. This applies to all manufacturers operating in Europe or the USA. Therefore, it is incorrect to talk about which prosthesis is better or worse.

The main difference between endoprostheses is the friction pair formed due to the materials from which the head and the artificial acetabulum (or liner) are made.

Indications

Replacement of natural bone structures with a prosthesis is recommended if the following problems exist:

• arthrosis of 1-3 degrees with deformation on one or both sides;
• coxarthrosis;
• Bekhterev's disease;
• fractures in old age;
• pathogenic formations in the neck and head of the femur;
• joint necrosis grade 3-4;
• rheumatoid arthritis;
• damage to the pelvic area with the risk of loss of musculoskeletal functions;
• severe injury to the acetabulum.

Hip joint: price of prosthesis

The pharmacy does not sell artificial implants for endoprosthetics. They are handled by several companies in large cities. The price will depend on several factors:

• dealer markup;
• brand;
• design features;
• purchase directly from an official representative or through an intermediary in a hospital;
• quality of workmanship and specific model of the prosthesis.

Endoprostheses from almost all companies are represented in Moscow. The cheapest implants are offered by the Taiwanese “UOC”, however, doctors’ reviews of this manufacturer are quite wary. The essence of the low price is obvious - Chinese and Taiwanese companies simply clone models of European companies.

A titanium prosthesis from a well-known manufacturer in Moscow costs 99-120 thousand rubles. Asian designs are about 2 times cheaper. If the friction pair is ceramic-ceramic, then the price fluctuates around 200 thousand rubles. The average bill for a classic metal-polyethylene design does not exceed half that of a ceramic product. When purchasing in a hospital, additional markup is possible, masked by additional medical services.

Zimmer dentures are the most popular, and model range has all the necessary types of orthopedic implants. What are the best implants from the company? It depends on how the patient will use it. For normal everyday life at a slow pace, all design options are suitable. Price in Moscow.

• Classic bipolar implant. Equipped with a metal-polyethylene friction pair. Durability – up to lifelong with moderate use. The amount that the manufacturer asks for the product usually does not exceed 120 thousand rubles.
• Single-pole titanium prosthesis. The cheapest option. Only the head of the femur is prosthetic, and the acetabulum remains its own. It is impossible to select a friction pair; it always contains metal components. The starting price tag is from 75 thousand rubles.
• Ceramic. The most expensive type of construction. Has a minimal gradient of friction and wear. The price starts from 200 thousand rubles.

To summarize, the question of how much a design from Zimmer costs depends directly on the model. The price in Moscow starts from 75 thousand rubles.