| Lineage Acetabular Cup System
LINEAGE® Acetabular Cup System
(Ceramic)
The use of alumina ceramic in total hip replacement
has a long and successful clinical history. The LINEAGE®
Acetabular System with ceramic liners builds on this clinical
history using sophisticated manufacturing methods and materials
to minimize wear debris generation.
- Alumina oxide ceramic material provides high strength and
wear resistance
- Beaded porous surface provides biologic fixation
- Solid and three-hole options for surgical flexibility
- 28, 32, and 36mm internal diameter options
- 18° internal taper securely locks liner to shell with
no fretting wear
Læs alt omkring Ceramic-on-Ceramic
teknologien her.
LINEAGE® Acetabular
Cup System (Polyethylene)
Polyethylene Articulation
Joint stability and proper center of rotation are critical
requirements for a successful total hip replacement. The LINEAGE®
Acetabular System with UHMWPE liners provide lipped options
for increased femoral head coverage promoting a stable joint.
Standard and lateralized options allow the center of rotation
to be re-established, further aiding in optimum joint mechanics.
• Ethylene oxide sterilization minimizes
oxidative degradation
• 28 and 32mm inside diameter options
• Standard and +4mm lateralizated options
• 0° and 15° lip options allow 360° positioning
of lip in shell
LINEAGE® Acetabular
Cup System (Metal)
Metal Articulation
The use of cobalt chrome in total hip replacement has a long
and successful clinical history. The LINEAGE® Acetabular
System with metal liners builds on this clinical history using
sophisticated manufacturing methods and materials to minimize
wear debris generation.
• High carbon, cast cobalt chrome material
provides high strength and wear resistance.
• 28, 32 and 36mm inside diameter options
• 18 degree internal taper securely locks
Shell / Liner Features
The LINEAGE® Acetabular System provides
unsurpassed surgical flexibility for shell fixation and bearing
material choices. The LINEAGE® Acetabular Shells are manufactured
from titanium, the material of choice for biocompatibility
and reduced stiffness. The unique internal shape and design
allow the use of ceramic, metal, or UHMW polyethylene liners.
This allows the surgeon to select the bearing material most
appropriate for a wide range of patient demands and activity.
- 14° flared rim enhances fit for initial and long term
stability
- Beaded, porous surface for biologic fixation
- Solid, quadrant, and multi-hole options for adjunct fixation
when required
- Titanium for biocompatibility
- Apical hole allows visualizing component seating
- 18° internal taper securely locks liners in the shell
minimizing micromotion and backside wear.
ALUMINA CERAMIC
Alumina (Al2O3) was selected as the material
for the liner based on the history of its clinical use and
its excellent wear characteristics when paired with an alumina
femoral head. It has been used by the orthopaedic device industry
since 1969 and has exhibited excellent biocompatibility.11,12
Most importantly, alumina on alumina articulation couples
have demonstrated significantly less wear than THAs involving
a polyethylene socket. 13
LOCKING MECHANISM
The ceramic LINEAGE® insert and shell
are assembled at the time of surgery by impacting the insert
into the shell. A self-locating, eighteen degree taper provides
a secure method of assembly between the shell and insert.
The strength of this shell/insert construct is confirmed by
the experimental results presented later in this monograph.
SHELL/INSERT GROUP
SIZING SCHEME
In order to minimize hospital inventory requirements,
LINEAGE® shells and inserts have been designed with a
group sizing scheme. Each shell within a grouping uses the
same insert. Femoral heads and inserts are available in 28,
32, and 36 mm diameters. Acetabular shells are available with
outside diameters in even increments from 46 mm to 68 mm.
This information is shown in TABLE 1. Femoral heads are available
in three neck lengths.
| Shell
SizeS
(OD in mm.) |
Group |
Femoral
Head Sizes
(OD in mm.) |
Ceramic
Insert Sizes
(ID in mm.) |
| 46
48
50 |
1 |
28 |
28 |
| 52
54
56 |
2 |
32 |
32 |
| 58
60
62 |
3 |
32 |
32 |
| 64
66
68 |
4 |
36 |
36 |
Table 1: | LINEAGE® Articulation
System Implant Sizing and Grouping Information
  
For more information on the Lineage range
of acetabulum products such as brochures, articles, video
etc., please contact
Ortotech directly or visit the official Lineage homepage.
LINEAGE®
Acetabular Cup System (Polyethylene)
LINEAGE®
Acetabular Cup System (Metal)
LINEAGE®
Acetabular Cup System (Ceramic)
  
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