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FOR AO ORP 2010: Participant in 45th AOTrauma ORP Course-Principles in Operative Fracture Management 2011-2015:Table Instructor 2010-2011: AOTrauma ORP Program Development Taskforce, Zurich, Switzerland 2015: AO educator course
Office : Orthopaedics Operating Room , Siriraj Hospital , Mahidol University , Bangkok
Education 2007: Bachelor degree in Nursing, Faculty of Nursing, Mahidol University 2014: Master Degree of Art in English for Careers, Language Institute, Thammasat University Pranom Thapthimthong
The Large External Fixation System
Objectives
• Understanding the principle of external fixator
• Illustrating the types of external fixator
• Describing the implants and functions
• Explaining the instruments and using process
Definition
An external fixator is a device
placed outside the skin which
stabilizes the bone fragments
through wires or pins connected
to one or more longitudinal
bars/tubes
Indications
• Polytrauma patients
• Severe opened fracture
• Closed fracture with severe soft tissue
injury
• Open fracture involving bone loss
• Pelvic ring disruptions
Indications
• Infected nonunion fracture
• Limb lengthening
• Bone transportation
• Arthrodesis
• Intra-operative reduction
Types of External fixator
. Ring fixator . Tubular fixator
. Hybrid fixator
Three Basic Types of The AO External Fixator
Type III Triangular frame
Type I Unilateral frame
Type II Bilateral frame
One – plane frame
Unilateral
Two – plane frame
Bilateral Frame One Plane
Modular External fixator
12 AOEA
Implants
Schanz screw 5.0 mm
Self Tapping (predrilling)
Schanz screw 5.0mm Self drilling self tapping
Drill
Tap
Screw
Stainless steel tube
Carbon fiber rod
Tube
Single adjustable clamp
Open adjustable clamp (Clip-on)
Open rod clamp
Tube to tube clamp
Universal joint for two tubes
Schanz
Rod
Transverse clamp
Multipin clamp for 2- 6 Schanz screw
Open compressor
Instruments
Universal chuck with T-handle
Drill bit 3.5 mm
Triple drill sleeve Drill sleeve short
Drill sleeve short Trocar short
6.0/5.0 5.0/3.5 3.5
Drill sleeve long Drill sleeve long Trocar long
6.0/5.0 5.0/3.5 3.5
Aiming device
Combination Wrench
Wrench
Socket Wrench
Depth gauge
Adaptor for selfdrill
Caps for tube and rod
Protective cap
Instruments for removal • Combination wrench, 11 mm. • Socket wrench • Universal chuck with T-handle
Thank you
Take home message for External Fixator
• Achieve relative stability
• Construct in various ways
• Preserve the soft tissue
around fracture sites
• Particularly useful in fracture
associated with extensive soft
tissue damage
Thank You
Thank You