TriMed Ulnar Osteotomy System™Surgical Technique

Ulnar Osteotomy Compression PlateTM

Plate Application

• ExposeboneintheintervalbetweentheECUandFCU.

• Applyplateonbone.Ensurethatthetwosmallholesonthesideoftheplatearevisible.

• Positionplatetoavoiddistalimpingementduringshortening. • Insertone3.2mmscrewintheslottedholeattheendfarthest

fromtheosteotomysite,andthree3.2mmscrewsontheoppositesideofplate,startingwiththeendscrewhole.

Guide and Pins

• PlacetheCombinationDrill(CD)Guideontheplate.

• Insertashort1.6mm(0.062”)K-wireflushalongthebackwallofthepinslotintheCDGuideandthroughonecortex.

• RepeatwithlongerK-wireandremoveCDGuide.

Osteotomy

• Selecttheappropriate‘A’guidebasedontheplannedresection(2,3,4,5mm)andinsertintotheplate.Holdguidewithboneclampor1.6mmK-wire(seeTips).

• Makecutwithasawbladeof0.4mmthickness.Irrigateliberally.

• Remove‘A’guide,insert‘B’guide,andmakesecondcut. Removebonewafer.

Application of Compression Clamp

• InserttheCompressionClampintotheholeonthefixededgeoftheplate.

• AdjusttheclampsotheK-wiresleeveisjustbelowthecentralaxisoftheulnaandawayfromtheosteotomysite.

• Inserta1.6mm(0.062”)K-wirethroughthesleeveengagingthefarcortex.

1

2

3

4

UlnarOsteotomyCompressionPlateTM

2

Compression of the Osteotomy

• Loosenthescrewintheslottedholeonly1/4 turn.

• ShortenulnawithCompressionClamp.Useaboneclampforaddedcompressionofosteotomysite.

• Checkbothsidesofosteotomysiteforbonecoaptation.

Prepare Lag Screw Hole

• Re-applyCDGuideanddrilllagscrewholeusing2.3mm(red)drillandguide.

• RemoveCDGuide.

• Measuretothelongsideofthehole.

• Useabonetaptoensurethatlagscrewiseasytoinsert.

Insert Lag Screw

• Insertlagscrewensuringpenetrationoffarcortex.

• Re-tightencorticalscrewinslottedholewatchingthatosteotomyremainscompressed.

Final Fixation

• Inserttheremainingcorticalscrews.

• RemoveK-wiresandclamps.

5

7

6

8

UlnarOsteotomyCompressionPlateTM

3

TIPS

Ulnar Osteotomy Compression PlateUOCP

• A1.6mmK-wireortheboneclampcanbeusedto stabilizethecuttingguidestotheplatewhile osteotomycutsaremade.

• Osteotomieslargerthan5mmmaybemadeby performingsuccessivecuts.

Bone ClampOBC

Compression ClampCOMPC-UOS

Saw GuideUOSG-A-x02mm to 05mm

UOSG-B

K-WireWIRE-1.6/065WIRE-1.6/100

LAG HOLE K-WIRE SLOTS SLOTTEd HOLE

InSTRUMEnT HOLES

CombinationDrill GuideGdUOS-1.6

Cortical ScrewHEX3.2-xx

10mm to 18mm

Cortical Locking ScrewLCBS3.2-xx10mm to 18mm

Cortical Lag ScrewLAG3.2-xx14mm to 26mm

Saw BladeOSB-9x

0.4mm thickness(Use blade lengths of 25–32mm

and widths of 6–10mm)

©2017 TriM

ed, Inc. All rights reserved. TME 840-59 (07-17)

TriMed,Inc./27533AvenueHopkins/Valencia,CA91355USA/800-633-7221/www.trimedortho.com

PatentCoverage:TriMed,Inc.productsarecoveredbypatentsissuedintheU.S.andinforeignjurisdictions.ThepresentlyissuedU.S.patentsare:5,709,682;5,931,839;5,941,878;6,077,266;6,113,603;7,037,308;7,195,633;7,540,874;8,177,822;8,821,508;8,906,070;9,089,376;9,283,010;9,220,546.TheTriMedUlnarOsteotomyCompressionPlatehasU.S.andinternationalpatentspending.TriMedUlnarOsteotomyCompressionPlateisatrademarkofTriMed,Inc.

Thetechniquepresentedisonesuggestedsurgicaltechnique.Thedecisiontouseaspecificimplantandthesurgicaltechniquemustbebasedonsoundmedicaljudgmentbythesurgeonthattakesintoconsiderationfactorssuchasthecircumstancesandconfigurationoftheinjury.