Stryker SECUR-FIT ADVANCED User Manual

STEP 1
-
2 SECUR-FIT
®
ADVANCED SURGICAL TECHNIQUE
Pre-operativeplanningaidsinthe
determinationofprobableimplant
styleandsize.Thepre-operative
planningprocessshouldtake
qualitativeandquantitativefactors
(includingpatientbonequality,
density,andmorphology)into
considerationinordertoevaluate
and select the appropriate
instrument/implantsystemfor
the patient.
Placeanacetabulumtemplate
overtheareaontheX-ray.Besure
thatthecupiswellcenteredwithin
theacetabulumandthesizells
betweentheteardropandthe
superiorrim.Aftertemplatingthe
acetabulumforsize,markthecenter
ofrotation(representedbythegreen
dot(Figure1)).
Optimalfemoralstemt,prosthetic
necklength,angleandversion
canbemorecloselyevaluated
withtheuseofpre-operativeX-ray
analysis.Thefollowingparameters
shouldbedeterminedusinganA/P
radiograph:StemSize,Femoral
Offset,LegLength,NeckAngle,
andCenterofRotation.
TheSecur-FitAdvancedhastwo
offsetoptions:thestandardoffset
132°neckangleandthehigh
offset127°neckangle(Sizes4and
5areavailableinthe132°neck
angleonly).ChoosetheSecur-Fit
Advancedtemplateforwhichthe
stemsizeachievesmedio-lateral
corticalengagementattheproximal
two-thirdsofthestemandrecreates
the desired leg length and offset
(Figure2).Forboththe132°and
127°offsetoptions,thetemplate
hasmarkingsthatindicatethe
centerofthefemoralheadfora
range of head offset options.
The predicted change in leg length
andoffsetisdeterminedbythe
relative positioning of the center of
rotationmarkingsonthefemoral
andacetabularcomponents.
Forexample,ifagivenfemoral
componentcenterofrotation
markingissuperiortothecenterof
rotationmarkingoftheacetabular
component,leglengtheningis
predicted. The desired change in
leglengthisdeterminedbythe
radiographicleglengthinequality
thatwaspreviouslydeterminedwith
anA/Pbilaterallm.If8mmofleg
lengtheningisrequiredinorderto
equalizetheleglengths,thecenter
ofrotationmarkingofthefemoral
componentshouldbepositioned
8mmsuperiortothecenterof
rotationmarkingontheacetabular
component.Thestemsizeand
headoffsetthatmostcloselymeets
this goal is chosen. The predicted
change in offset is also considered
bycomparingtherelativemedial/
lateral position of the center of
rotationmarkingsofthefemoral
andacetabularcomponents.
Thetemplatesshouldbeusedto
estimatethenalcomponentsthat
mostcloselyrestorethenormal
offset of the patient’s hip.
Oncethenalestimatedstemsize
andpositionisdetermined,theneck
resectionlevelshouldbenoted
(Figure3).Thiswillbeusedasa
referenceduringintra-operativeneck
resection.
Figure1 Figure2 Figure3
PRE-OPERATIVE PLANNING
Templates
Secur-Fit Advanced
Acetate Templates
Lit# LTEM106
Acetate templates include 20% magnification.

Stryker SECUR-FIT ADVANCED Specifications

General

Brand	Stryker
Model	SECUR-FIT ADVANCED
Category	Medical Equipment
Language	English