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JRI
VAIOS
®
Shoulder System
VAIOS® Reverse
is the total reverse shoulder replacement option of the
VAIOS® Shoulder System
. It shares the
same humeral neck, humeral stem, and metal back glenoid components as the
VAIOS® Anatomic
option. A reverse
cup component, made of titanium alloy (Ti6Al4V) fits into the humeral neck component using a locking taper
connection and with the additional security of a taper retaining screw (Ti6Al4V), which is then fitted with an all
UHMWPE reverse bearing that clips into the reverse cup. The reverse bearing is available in a range of sizes to
adjust deltoid tension. Concomitantly a reverse dome (CoCr) is available to insert into the metal glenoid backing,
once the screw plug is removed, using a locking tapered connection and with the additional security of a taper
retaining screw (Ti6Al4V) and offering the ability to offset the centre of rotation position laterally.
VAIOS® Hemiarthroplasty
is the hemiarthroplasty option of the
VAIOS® Shoulder System
where only the
humeral component of the shoulder is replaced.
VAIOS® Hemiarthroplasty
shares the same humeral neck and
humeral stem as the
VAIOS® Anatomic
and the
VAIOS® Reverse
. It also comprises a humeral head made of CoCr,
which articulates with the bone of the glenoid.
Longer stems are available for bridging fractures.
IMPORTANT: Adjunctive proximal fixation / support is
required
for 220mm long stems and cement must be used.
Where there is loss of proximal bone stock, or poor proximal bone quality, bone grafting or other adjunctive
proximal fixation / support is advised for implant stability. It is important that the prosthesis is not distally fixed
without proximal support.
Smaller sized implants should be restricted to patients with smaller bone and regular body mass index and could
be inappropriate for other patients. All HAC Coated components are for use WITHOUT cement, fixation being
achieved through bone ingrowth and union of the coating and the host bone.
VAIOS® Humeral Resurfacing
are humeral resurfacing heads are manufactured from CoCr and are available in a
range of sizes for use as a partial joint arthroplasty. The internal bore of both heads are fully coated with
Hydroxyapatite Ceramic Ca
5
OH(PO
4
)
3
and are for use WITHOUT cement, fixation being achieved through bone
ingrowth and union of the coating and the host bone. They are available in various sizes to accommodate
anatomical variations of the humeral head. Cuff Tear Arthroplasty (CTA) resurfacing head options are also available.
The resurfacing heads can be used with a range of
VAIOS®
glenoid components.
Cuff Tear arthroplasty (CTA) resurfacing heads are not recommended for use in a total joint arthroplasty. It is
advisable that conventional stemmed implants are available when resurfacing hemiarthroplasty is performed.
Indications
VAIOS® Shoulder System
is indicated for the following conditions where the humerus is of sufficient bone stock
and there is presence of an intact or reconstructable rotator cuff which is necessary for proper functioning and
dislocation resistance. Similarly resurfacing heads are indicated where the humeral head and neck are of sufficient
bonestock and there is presence of an intact or reconstructable rotator cuff which is necessary for proper
functioning and dislocation resistance:
•
Severely painful and/or disabled shoulder joint from osteoarthritis or rheumatoid arthritis.
•
Acute traumatic fracture of the humeral head.
•
Correction of a painful and disabling functional deformity.
•
A painful and disabling arthritis with a reconstructable rotator cuff.
•
A painful and disabling post -traumatic arthritis.
Where painful and disabling arthritis of the shoulder, with an irreparable rotator cuff tear is indicated, the reverse
shoulder system is available. Specific indications for use include:
•
Cuff tear arthroplasty
IFU 155-032_Iss.9
June 2019
Page 4 of 85