European Market Report for Hip Replacement Devices 2016 - MedCore
|出版商||iData Research Inc.||商品編碼||366809|
|出版日期||內容資訊||英文 124 Pages
|歐洲的髖關節置換設備市場分析 European Market Report for Hip Replacement Devices 2016 - MedCore|
|出版日期: 2016年08月01日||內容資訊: 英文 124 Pages||
A primary total hip replacement (THR) replaces the entire hip joint. THR implants typically have three components: a stem, a head and an acetabular cup. The stem anchors the implant in the femur; the portion of the stem that emerges from the femur and attaches to the head is known as the neck. The head is ball-shaped and replaces the natural head of the femur. It articulates with the cup, which sits in the acetabular fossa. THR implants are either sold in one-piece (monobloc) or modular designs. In a modular implant, the head, neck and stem can be separated, replaced or adjusted for greater versatility in matching the system to a patient's body. The majority of THR implants sold are of the monobloc variety. This is driven by a desire for expediency during the surgical procedure. However, the advantage of a modular design is also its downside because the device adds complexity and time to surgical procedures. The second reason for surgeon preference for one-piece implants is their concern over a greater risk of infection because of the increased number of surfaces in modular systems.
The hip reconstruction device market has rapidly adopted cementless, or press-fitted, systems. These devices are implanted into a tight, form-fitting cavity hollowed out in the remaining bone. It is held in place by friction, but the design of such systems encourages bone growth and more natural and long-lasting adhesion. The disadvantage is the lesser amount of initial fixation. This makes press-fitted implants technically challenging for highly mobile joints such as the elbow. Some surgeons also use hybrid implants which involve both cemented and cementless components.