limited longer term results are available for this ... · [email protected] swivel locktm,...
TRANSCRIPT
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ANAFAB Procedurefor Scapho-lunate dissociation
Assoc. Prof. Michael Sandow FRACSWakefield Orthopaedic Clinic
University of AdelaideJune 2019
DISCLAIMER: LIMITED LONGER TERM RESULTS ARE AVAILABLE FOR THIS PROCEDURE.
ANY USE OF THE TECHNIQUE IS AT THE DISCRETION OF THE TREATING SURGEON. THE LACK OF WIDE SPREAD EXPERIENCE MUST BE CONSIDERED IN ANY DECISION TO USE THE
PROCEDURE - AND SUCH DETAILS SHOULD BE DISCLOSED TO THE PATIENT.
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Characterized by:Scapho-lunate diastasisDorsal scaphoid subluxationScaphoid flexionLunate extension
DorsalVolar
Scapho-lunate dissociation
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Dorsal Longitudinal incision through 3rd
compartment, EPL left out and 4th
compartment elevated but left intact
ANAFABSurgical Technique
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Dorsal Scapho-lunate ligament attachments identified- marked with 2.5mm drill
Dorsal
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Scaphoid-trapezium ligament attachments identified- marked with 2.5mm drill
VolarLongitudinal incision along line of FCR
and through sheath to volar capsule and radius
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K-wire inserted along scaphoid axis using targeting jig or Imaging
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3mm cannulated drill over k-wire to create scaphoid tunnel.Drill dorsal to volar to ensure the proximal scaphoid drill hole is correctly positioned
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2.5mm wide 15cm long distally based strip of FCR - passing pin, and No.2 Nylon
to strip, distal to proximal
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2.5mm wide 15cm longdistally based strip of FCR
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0
Double loop of 1.5mm LabralTape tape secured to Trapezium (lateral facet) using 3.5mm SwivelLock anchor
Volar
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FCR strip
1.5mm 36” LabralTape(doubled)
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Using Quick Pass Tendon Shuttle, FCR strip and LabralTape passed volar to dorsal through scaphoid
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Using Quick Pass Tendon Shuttle, FCR strip and
LabralTape passed volar to dorsal through scaphoid to
dorsal wound
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Scapho-trapezium ligament restored
volar
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dorsal
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K-wire inserted to (just) exit on volar-ulnar lunate surface** Care to avoid mid-carpal joint and volar structures **
Curved smooth instrument through Midcarpal joint
protects and guides. Check with imaging.
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3mm drill to create lunate tunnel
Advance drill just to breach volar cortex.
Ensure k-wire does not advance!!!
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Tendon and Labral Tape are then loaded into Quick Pass tendon shuttle….
Extend the volar FCR wound and blunt dissect across the volar capsule
and under the carpal tunnel contents.
Locate and retrieve the tendon shuttle as it exits
the volar lunate.
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… and advanced through lunate to volar wound.
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Dorsal Scapho-lunate ligament restored.
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Quick Pass Tendon shuttle advanced volar to dorsalthrough radial styloid.
Using imaging, locate radial drill hole in
central radial styloid – aim to exit adjacent
to lister’s tubercle
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FCR can sometimes be a bit short.
Add suture extension if needed.
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Volar Long Radio-lunate ligament restored.
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Apply adequate tension to FCR tendon and labral tape to reduce carpal bones, and secure dorsally with
(3mm or 4 mm) interference screw
Determine screw size withStepped Sound device
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The interference screw fixation of the FCR tendon and labral tape is augmented by an additional Swivel-Lock
anchor more proximally on the dorsal radius.
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Add an additional suture to local tissue, or in larger patients, a small interference screw, to secure the FCR/labral tape to
the dorsal lunate to prevent in-line slippage.
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“ANAFAB” –Anatomical Front And Back reconstruction
Splint 5 daysthen Cast 6 weeks
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“ANAFAB” –Anatomical Front And Back reconstruction
Splint 5 daysthen Cast 6 weeks
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29
32 y.o. male
heavy FOOSH at football
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Pre-repair 3 months Post repair
Cap-Lun 950
Sca-Lun 400
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Swivel LockTM, QuickPassTM and Labral TapeTM are
Trade Marked and registered devices from Arthrex.
Arthrex have had no part in the development of this
technique, nor supplied any funding or support.