iDuo
®
Case Report
LateralBicompartmentalKneeArthroplasty
withtheiDuoPatientͲspecificKnee
ResurfacingSystem
LATERAL
SURGEON
TOMMINAS,MD,MS
BOSTON,MA
PATIENTPROFILE
51yearoldfemale;65inches150lbs;formerdistancerunner;registerednurse
currentlyworkinginabusyurbanhospitalinthePostAnesthesiaCareUnit.
CLINICALPRESENTATION
PresentedwithahistoryofOsgoodͲSchlatter’sdisease.
PREVIOUSTREATMENTS
PrescriptionNSAIDS;twopartialmeniscectomies;modifiedactivitieswithphysical
therapy.
FIGURE1
Osteoarthritisofrightknee,with
posteroͲlateralcartilageloss.
CLINICALDIAGNOSIS/RECOMMENDEDTREATMENT
PreͲoperativeimagingindicatedalossofcartilagein
thepatellaandlateraltibiofemoralcompartments
butawellmaintainedmedialtibiofemoral
compartmentmeniscusandcruciateligaments.
KneeresurfacingusingtheConforMISiDuodesign
selectedduetoanatomicfitandligament
preservation.CTarthrogramorderedtohelp
evaluateallthreecompartments.
FIGURE3A
CTarthrogram—Coronalview
FIGURE3B
CTarthrogram—Sagittalview
FIGURE3C
CTarthrogram—Sunriseview
FIGURE2A
PostͲopxͲray—APview
FIGURE2B
PostͲopxͲray—Lateralview
OUTCOME
Patientstatessheisdoingverywellandhasresumedherrecreationalactivities.
UncomplicatedpostͲoperativecourse,minimalpainandnocomplications.
x Upwalkingwithcrutcheslessthan24hoursaftersurgery
x Walkingwithoutcrutcheswithin6days
x XͲraysshowedrightlateralbicompartmentalprosthesiswithgoodalignmentandno
signsofperiprostheticlucencyorloosening.
FIGURE2C
PostͲopxͲray—Sunriseview
KATRINABICKERSTAFF
RegisteredNurse,
PostAnesthesiaCareUnit
ABOUTTHEPATIENT
Katrina enjoys an active outdoors lifestyle involving running and hiking. She started running
recreationally 20 years ago with her husband and became quite competitive in local 10K races
placinginthetop5finishersforheragegroup.Sheandherhusbandlovetheoutdoorsandhave
mademanytripsoutwestforhikingadventures.
Over the years Katrina began
experiencing pain in her right knee and
decided to seek treatment. After 2
meniscectomies (2007, 2008) left her
with limited relief, she was informed
that her next option would be a knee
replacement. She desired an option
with minimal recovery time, the ability
to continue working asa bedside nurse
and that would also allow her to
continue her outdoor activities free
from pain. In 2009 she met with Tom
Icontinuetoenjoylifetothefullestwalking,
Minas, MD, MS, who recommended a
hiking,andcycling,withoutpain.
bicompartmental procedure using the
—KatrinaBickerstaff
ConforMISiDuo.
At2weekspostͲopKatrinawaswalkingunaideddownherblock,wasoffallpainmedicationsand
was able to drive. She was back at patients’ bedsides full time within 10 weeks. Eight months
followingherproceduresheenjoyedavacationoutwest,hikingeighttotenmilesperday.
INDICATIONS
TheConforMIS®,Inc.BicompartmentalKneeRepairSystemisintendedforusein
patientswithseverekneejointpainanddisabilitywhoseconditionscannotbe
solelyaddressedbytheuseofaprostheticdevicethattreatsonlyasingleknee
compartment,suchasaunicondylarorpatellofemoralprosthesis.
Theindicationsforuseincluderestoringjointfunctionandreliefofpaindueto:
•Painfuljointdiseaseduetoosteoarthritis,traumaticarthritisorrheumatoid
arthritisoftheknee
•Posttraumaticlossofjointfunction
•Failedosteotomies,hemiarthoplastiesandUnicondylarimplants
TheBicompartmentalKneeRepairSystemmaybeutilizedwhenthemedialor
lateralcondyleandpatellofemoralareashavebeenaffectedbyoneormoreof
theseconditions.
TheConforMISBicompartmentalKneeRepairSystemisintendedonlyforuse
withbonecement.
CAUTION
Federallaw(USA)restrictsthisdevicetosalebyorontheorderofa
physician.TheConforMISiDuoisintendedforuseonlybyphysicianstrainedin
theproperuseofthedeviceandaccompanyinginstrumentation.
iDuo®isaregisteredtrademarkofConforMIS,Inc.
CONTRAINDICATIONS
Thefollowingconditionsareabsolutecontraindicationsforunicondylarknee
repair.
•Activelocalorsystemicinfection,
•Lossofboneormusculature,osteoporosis,neuromuscularorvascular
compromiseintheareaofthejointtobeoperatedtoanextentthatthe
procedureisunjustified.
•Severeinstabilityduetoadvancedlossofosteochrondralstructureorthe
absenceofcollateralligamentintegrity,
•Severe(>15º)fixedvalgusorvarusdeformity.
MKͲ02520ͲAB 0411
ConforMIS,Inc.
11 NorthAvenue,
Burlington,MA01803
Phone:781.345.9001
Fax:781.345.0147
www.conformis.com