humelock reversed · 2018-01-14 · no trials ! solid stem implanted after metaphyseal and...

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HUMELOCK REVERSED IMPACTED OR CEMENTABLE LOCKABLE 1

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Page 1: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

HUMELOCK REVERSED

IMPACTED OR

CEMENTABLE LOCKABLE

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Page 2: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

TABLE OF CONTENTS

1. HUMERAL PART !   No trials ! Humeral cup ! Epiphyseal part ! Adapted design to trauma ! Lockable or cementable !   Cage for graft !   145° CD angle ! Modularity stem/cup 2. GLENOID PART ! Glenoid !   Size and position of the baseplate !   Fixation of the baseplate !   Variable length posts ! Glenosphere !   Post op X-RAY

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Page 3: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

1. HUMERAL PART

!   SOLID STEM Ø 8/10/12mm !   EPIPHYSIS 32/36/40mm !   NO TRIAL IMPLANTS !   HUMERUS/GLENOID: CD ANGLE OF 145° !   POLY CUP WITH MORSE TAPER Ti !   CEMENTABLE or LOCKABLE !   18 DIFFERENT COMBINATIONS !   TRAUMA DESIGN !   CAGE FOR BONY STABILIZATION

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Page 4: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

NO TRIALS

!   Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it.

!   The consequence is a better press-fit between the stem and humerus.

!   If stability is not completed, stem can be locked or cemented.

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Page 5: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

HUMERAL CUP

! Cup is in high density poly which is thermo molded on a titanium shell to optimize impaction on the stem with a morse taper (without debris).

!   All cups can be centered or offset to

find the best position without having over inventory.

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Page 6: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

EPIPHYSEAL PART

! Three sizes of stem are available 32/36/40mm.

!   Size 32 is UNIQUE on the market. !   The interest is to keep bony stock with

indications if small humerus. !   This avoids to ream to Ø36mm by

removing all cancellous bone.

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Page 7: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

ADAPTED DESIGN TO TRAUMA

! Epiphyseal part has been done smaller, specially for trauma indications.

!   This designs allows a better reinsertion of rotator muscles to optimize the functionnal outcomes.

!   Use of Smart loops is recommended for a better stability.

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Page 8: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

LOCKABLE OR CEMENTABLE

!   On the diaphyseal part of the stem, a surface without HA can be interlocked.

The two screws go through the HA pegs. !   This same surface can be cemented. In this case HA pegs avoid the cement to go in the holes.  

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Page 9: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

CAGE FOR GRAFT

A cage for graft is available and can be fix on the epiphyseal part. The goal is: !   To fill a gap in trauma !   To stabilize the stem in primary surgery

(if very osteoporotic bone)

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Page 10: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

145° CD ANGLE

!   CD angle is 145°. !   To reduce the risk of scapular notching

by lateralizing the humerus. ! Stability is kept by tilting and lowering

the position of the glenosphere.

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Page 11: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

MODULARITY STEM/CUP

!   All cups are compatible with all stems. !   This makes 18 possible combinations

between stem and cup. !   This gives a large modularity of

implants during surgery.

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Page 12: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

2. GLENOID PART

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Page 13: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

GLENOID

!   SMALL DIAMETER 24 mm !   POSITIONING ACCORDING TO BIGLIANI/KELLY’S 12mm !   STABILITY BY 4 ANGULAR SCREWS !   LOCKING SCREWS or STD !   VARIABLE ANGLE SCREWING SYSTEM !   3 LENGHTS OF POSTS !   LOW AND 10° TILTED GLENOSPHERE

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Page 14: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

SIZE AND POSITION OF THE BASEPLATE

!   The baseplate (metaglene) has a unique size of Ø24mm.

! Its positionning is driven by a guide which gives the best place for a K-wire at 12mm over the inferior part of the glenoid (Dr Kelly).

!   The positionning is simple and reproducible.

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Page 15: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

FIXATION OF THE BASEPLATE

12°  

!   Fixation of the baseplate is done by 4 variable angle screws.

!   The screws can be locked or not according to the needs.

!   The green zone on the drawing shows the possible angulations of the 4 screws to have the best fixation.

! Cementless post Ø7mm.

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Page 16: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

VARIABLE LENGTH POSTS

!   It is possible to increase the length of central peg by adding post of 6 and 10mm in cases of osteoporotic bone, graft or revision.

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Page 17: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

GLENOSPHERE

!   The glenosphere is fixed on the baseplate by a morse taper.

!   A special instrument is available to impact the glenosphere on the baseplate.

!   The 2 versions (centric and eccentric) of glenosphere are tilted of 10° to avoid scapular notching.

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Page 18: HUMELOCK REVERSED · 2018-01-14 · NO TRIALS ! Solid stem implanted after metaphyseal and epiphyseal rasping to compact cancellous bone and not using a reamer to remove it. ! The

POST OP X-RAY

OMEX TRAUMA

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