Ilioinguinal vs AIP Approach · • Operate around it rather than retracting it. Tips for Exposure...
Transcript of Ilioinguinal vs AIP Approach · • Operate around it rather than retracting it. Tips for Exposure...
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Ilioinguinal vs AIP ApproachGood, Better, Best Practice
Brian J Cross DOBroward Health Medical Center
Ft Lauderdale, FL
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Disclosures
Depuy Synthes – consultant/ speaker bureauOrbis Medical – design consultantCitieffe- design consultant
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Thanks
• AO Trauma• Claude Sagi MD• Pierre Guy MD
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Case
• 48 y/o male • Avid cyclist (100 miles/week)• Struck by motor vehicle• Isolated injury to left hip
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Objectives
• Discuss which fracture patterns will benefit from an anterior exposure
• Discuss the ilioinguinal and AIP approaches• Similarities• Differences• Tips for maximizing your exposure
• How do I choose?
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What Patterns?
• 30% of acetabular fractures require anterior fixation• Anterior wall• Anterior column• High (transtectal) transverse• T-type*• Anterior column posterior hemitransverse*• Associated both column*
• *May require sequential/ simultaneous approaches
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Ilioinguinal Approach
• Developed by Emile Letournel• Exposure of the inner innominate bone from the SI joint to the
symphysis• Indirect access to the quadrilateral plate and posterior column
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Ilioinguinal
• Requires development of 3 wound intervals• Mobilization of the femoral vessels and nerve and the spermatic cord (round
ligament)• Articular reductions are indirect• Femoral and inguinal hernias
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Ilioinguinal
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Ilioinguinal
• Must understand the anatomy of the femoral canal and the iliopectineal fascia
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Tips for Exposure - II
• First window• Iliac fossa from SI to iliopectineal
eminence• Hip flexion relaxes iliopsoas• Exposure can be increased by
osteotomy of ASIS to access medial eminence• PAO ( Bern CH)• Useful in avoiding second window
exposure
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Courtesy of Claude Sagi MD
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Tips for Exposure - II
• Second window• Access to pelvic brim and
quadrilateral surface from SI joint to the lateral third of the ramus• Flexion and external rotation of the
ipsilateral hip will maximize exposure• Complete release of the iliopectineal
fascia
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Tips for Exposure - II
• Third window• Release the ipsilateral rectus
insertion• Will expose entire medial ramus to
the quadrilateral plate
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Tips for Exposure - II
• Third window• Incise vertically along the linea
alba• Can be extended into the AIP
approach• Operate from the opposite side of
the table
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AIP
• First described for hernia repair by Rene Stoppa in 1975.• Revised for pelvic and acetabular surgery by Hirvensalo et al in 1993• “Modified Stoppa” was described in 1994 by Cole et al.• Access to the entire anterior column when supplemented with a
lateral window• Unlike ilioinguinal allows direct instrumentation of the quadrilateral plate• Limited access to anterior wall• Operate from the opposite side of the table ( limits utility for simultaneous
approaches)
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AIP
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Tips for Exposure - AIP
• Complete release of the iliopectineal fascia is mandatory
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Tips for Exposure - AIP
VS
Courtesy of Pierre Guy MD
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Tips for Exposure - AIP
VS
Courtesy of Pierre Guy MD
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Tips for Exposure - AIP
• Skeletonize and mobilize obturator neurovascular bundle• Operate around it rather
than retracting it
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Tips for Exposure - AIP
• Specialized retractors can be useful but are not mandatory
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Tips for Exposure - AIP
Addition of first window• Exposure of entire ilium• ASIS osteotomy can extend lateral
exposure to medial aspect of iliopectineal eminence• Pre drill osteotomy and repair with
lag screw to minimize nonunion
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What’s the evidence?
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What’s the evidence?
• Level 2 evidence (prospective comparative)• 60 consecutive patients randomized to either a AIP (modified Stoppa)
or ilioinguinal approach• Assessed multiple preoperative, intraoperative, and postoperative
parameters
• AIP decreased intraoperative blood loss and operative time
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• Direct (AIP) vs indirect (II) exposure of the retropubic anastomosis
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What’s the evidence?
J Orthop Trauma. 2014 Jun;28(6):313-9
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What’s the evidence?
• Level 3 evidence (retrospective review)• 122 patients (1993-2006)• Assessed fracture type, fracture reduction quality, surgical time, and
postoperative complications
• AIP 82.5% anatomic• II 68.9% anatomic• Fracture type, surgical time, and complications similar in both groups
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VS
Direct (AIP) vs indirect (II) access to the posterior column segment
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Post Op
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2 years
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Summary
• 30% of acetabular fractures will need an anterior approach• Anterior wall• Anterior column• High (transtectal) transverse• T-Type*• Anterior column posterior hemitransverse*• Associated both column*
• *may require sequential/simultaneous approaches
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Summary
• Simultaneous approach ( “floppy lateral” position ) only possible with ilioinguinal approach (KL + II)
• Sequential approach ( KL + II or AIP) requires meticulous attention to screw placement and intraoperative repositioning
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Summary
• AIP approach • Direct visual access to quadrilateral plate and posterior column• Indirect access to anterior wall
• Ilioinguinal approach• Direct visual access to anterior wall• Indirect access to quadrilateral plate and posterior column
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Summary
• The use of the AIP has gained significant popularity since its development
• Addition of the lateral window +/- ASIS osteotomy increases utility
• Access to the anterior wall is still limited
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Summary
• THE PATIENT AND THE FRACTURE PATTERN ARE THE DECIDING FACTORS IN THE APPROACH
• THE SURGEON SHOULD BE FAMILIAR AND FACILE WITH BOTH!!!