ARROW II
universal shoulder prosthesis
The ARROW shoulder system provides surgeons with greater flexibility in their therapeutic arsenal for shoulder reconstruction.
Concept:
When it was introduced in 2003, the ARROW shoulder system was one of the first universal systems for shoulder arthroplasty.
It allows surgeons to implant a reverse or anatomical prosthesis with the same set of instruments.
The universal stem can be used with and without cement for hemiarthroplasty, total anatomical (4-peg cemented glenoid base or cementless metal-back base) or reverse shoulder arthroplasty.
The instrumentation set consists of four instrument baskets.
Depending on the patient’s needs, the surgeon may have to revise the prosthesis.
The surgeon can keep the current humeral stem and then:
– convert a hemiarthroplasty into a reverse shoulder or
– convert a total shoulder into a reverse shoulder
The surgeon can also keep the humeral stem and metal-back glenoid base and then
– convert a total shoulder with metal-back glenoid base into a reverse shoulder
The single instrumentation set for both types of implants is simple and contributes to the reproducibility of these techniques.
HUMERAL PART
Stem:
– Universal stem for both anatomical or reverse arthoplasty.
– Quadrangular titanium stem, smooth at diaphyseal level and T40 coated with HAP at metaphyseal level.
– Cemented and cementless version which can be cemented on its diaphysis.
– Size ranging from 6 to 14 mm increment 2 mm (16 mm on request).
Head (anatomical):
– Off centred head +2 and +4 mm, size 2 by 2 from Ø 39 au Ø 54 according to the head chosen.
– Different diameters (from 39 to 54) and up to 2 thicknesses available depending on the head chosen.
– Stainless steel.
Humeral insert (reverse):
– Standard and off-centered +4 mm.
– Impacted by morse taper.
– UHMWPE on a metal-back.
GLENOID SIDE
Metal-back base plate including keel and front leg:
– Universality, used for both anatomical and reverse prosthesis.
– T40 HAP-coated.
– 3 sizes available in short (S, M, L) and long peg (XS, S, M).
Glenosphere (reverse):
– 3 sizes (36, 39, 42 on request).
– Stainless steel.
– Impacted in the glenoid base by centered morse taper.
Cemented glenoid (anatomical):
– 4 cemented anchorage pegs.
– 3 sizes (44, 46, 48) + 1 on request (50).
– In UHMWPE.
Glenoid insert (anatomical):
– 3 sizes (XS/S, M, L).
– In UHMWPE.
Features
Arrow II total shoulder arthroplasty (humeral and glenoid sides) is ready for e-ORTHO templating software.