Mirai means Future

The future of Shoulder arthroplasty.

Mirai is a complete, modular and convertible system for anatomic and reverse shoulder arthroplasty.

Permedica Mirai® Shoulder System has been conceived and developed by maintaining the concept of modularity on both glenoid and humeral sides, providing solutions for a broad spectrum of typical indications in shoulder arthroplasty surgery.

Mirai® offers a solution for anatomical or reverse shoulder arthroplasty using the same humeral stemless core that does not need to be replaced in case of surgical revision if it is stable and osteointegrated.

One system. Always 2 possibilities.

  • 2 configurations: anatomic and reverse
  • 2 humeral fixations: stemless and stemmed
  • 2 glenoid fixations: press-fit central peg or compression central screw
  • 2 fixation types: cementless or cemented
  • 2 materials: Ti6Al4V and VITAL-E®
  • 2 technologies: TRASER® and BIOLOY®

Reproducing patient anatomy

The Mirai® Modular Shoulder System aims to reproduce patient’s anatomy due to the unique design of the anatomic glenoid insert and anatomic humeral head.
Both prosthetic components respect the double curvature of the natural glena and homerus, preseting two different curvature radii: one radius in the antero-posterior section and one radius in the infero-superior section.

REDUCED WEAR [1]

The use of a non-spherical head with a more conformable glenoid component may reduce the risk of wear by allowing the gleno-humeral translation movement and increasing its contact area.

[1] Banci L., Meoli A., Hintner, M., Bloch H. R. (2019). Wear performance of inverted non-conforming
bearings in anatomic total shoulder arthroplasty. Shoulder & Elbow.

IMPROVED ARTICULATION AND STABILITY

A non-spherical prosthetic head, imitating the anatomy of the original humeral head, accurately replicates the shape of the elliptical head of the humerus, the rotational movement and kinematic of the gleno-humeral joint and increases the stability of the original gleno-humeral joint.

Bearing materials inversion

The Mirai® System proposes bearing materials inversion both in anatomic and reverse configuration:

  • Anatomic humeral head and glenosphere in VITAL-E® - UHMWPE blended with 0.1% of Vitamin E, Eto sterilized.
  • Glenoid insert and humeral insert in Ti6Al4V alloy PVD coated with TiNbN - BIOLOY®.

This offers several advantages:

REDUCED RISK OF OVERSTUFFING

A metal glenoid liner can have a reduced thickness compared to a conventional polyethylene glenoid liner, thus minimizing overstuffing complication in the replaced shoulder.

LIGHTWEIGHT PROSTHETIC COMPONENTS

More lightweight prosthetic components avoiding cobalt-chromium and stainless steel alloys from the prosthetic materials in favour of titanium alloy and UHMWPE.

HYPOALLERGENIC PROSTHETIC COMPONENTS

Hypoallergenic prosthetic components without cobalt, nickel, chromium, avoiding cobalt-chromium and stainless steel alloys from prosthetic materials.

A unique modular and convertible system

  • from anatomic to reverse without replacing the osseointegrated components
  • from stemless to stemmed

Humeral core with eccentric distal peg.

The methaphyseal humeral component is available with 7 different sizes (3 CCD angles, 3 offset).

Solutions for revision cases

To address difficult primary glenoid defects as for example glenoid defects Walch classification B2/B3 or revision cases with important bone loss on the glenoid side there are available glenoid wedges correcting glenoid version.

Reconstructing humeral meta-diaphyseal fractures and/or addressing revision cases, long humeral stems, cemented and not cemented are available until 180mm length.

Advanced material technologies

Mirai® Shoulder System is made using the most advanced manufacturing technologies and the most advanced materials available in prosthetic field.

MATERIALS

Mirai is composed of the following materials: Titanium Aluminium
Vanadium alloy ISO5832/3; VITAL-E® (UHMWPE + 0,1% wg Vitamin-E); BIOLOY® coating in TiNbN.

INSTRUMENTS SET

Only 4 trays for all the solutions: anatomic, reverse, stemless, stemmed.
A fifth tray is  available on request in case of revision stems usage.