large gap ilizarov - copy
TRANSCRIPT
Large bone defect of tibia treatment using
Ilizarov ring fixator - study of 47 cases.
A. Chandrasekaran, M.S., Ph.D.,Senior Consultant Orthopedic Surgeon,
Accident Care Clinics,Chennai 600021 & 600056 INDIA
This work is possible because of the institution’s free block
My sincere thanks to Founder Chancellor Ayya, Chancellor Shri. R. Venkatachalam
With teachers
With teachers
Definition
Large bone defect 3 to 5 centimeters with
soft tissue environment • secondary to infection, • radiation, • congenital deformity or deficiency.
AO classification
Bone defect
Primary bone loss• Open fractures and
bone loss• Gunshot injuries• Osteoclastic tumors
Secondary bone loss• After tumor resection• Infection• Nonunion
Bone defects caused by high energy injuries, bone loss, infected non unions, non unions- Hans C. Pape et al OCNA 1-4 Jan 2010
Defect Pseudarthrosis
Classification
a. Pseudarthrosis- defectb, c. Diastasis defect with
anatomical shorteningd. Diastasis defect without
anatomical shortening
Defects of lower limb bones. Shevetsov et al, BI Churchill Livingstone 2000-261
Ilizarov circular fixator – apparatus limb
Ilizarov ring fixator system
16 Times more rigid than other fixators
NEMKOV Transosseous compression distraction apparatus. Mechanics and strength of material 1977:47-50
Apparatus Limb
• In large gap and during distraction osteogenesis provides stability both in static and dynamic conditions, hence “APPARATUS LIMB.”
Makushin V.D., Kuftyrev L.M. (1983)
28 January 2011 SCORE 2011
Biomechanics - Wire limb
Stability and rigidity All the stresses are
taken by the wires Micro movement Ossification follows
first order of kinetics
Biomechanics of fracture healing and distraction osteogenesis using Ilizarov ring fixator system – a finite element analysis – A. Chandrasekaran, PhD thesis, SRU 2004
Evaluation• Soft tissue envelope• Infection both active and dormant• Joint contracture and range of motion• Nerve function: sensation, motor• Vasculature: perfusion, angiogram?• Location and size of defect• Hardware• General health of the host• Psychosocial resources
Soft tissue envelope
Everyone expect a functional recovery
Materials and methods• Sri Ramachandra University and Accident care Clinic• April 1996 to April 2015- • Retrospective and prospective study• forty(47) patients were treated, female-9 male -38 • The age group was between 3yrs to 70 yrs.• The gaps(defects) measured 3cms – 20 cms.• They were followed up periodically till they went back to their original position.
Etiology• Trauma - 39• Residual polio - 02 • Tumours - 02• Congenital - 02 • Post infective dislocation of hip - 01• Acute osteomyelitis - 01
EtiologyExternal fixation - 24plate osteosynthesis - 05Ilizarov fixator - 03Intramedullary nail - 04free fibular graft - 02allograft - 01Others - 08
Gap
3-5 cm -185-10cm -2310-15cm -0515-20cm -01
Procedures done
Distractional osteosynthesis -06 Osteotomy and transport -31 Osteotomy lengthening -05 Tibofibular synostosis - 03 Sequesterectomy stabilisation -01
Articular defects -04
Bone healing by Ilizarov technique
• Closed distractional osteosynthesis• Lengthening one of the fragments• Bilocal gradual distraction-compression
osteosynthesis• Defects of articular ends• Tibiofibular synostosis Defects of lower limb bones. Shevetsov et al, BI Churchill Livingstone 2000-
Closed distractional osteosynthesis
Lengthening one of the fragments –auto distractor
Segmental internal bone transportation
Segmental internal bone transportation
Segmental internal bone transportation
Segmental internal bone transportation
•Locomotor apparatus of man is actually constructed with a minimum of material for the maximum resistance to stress (Pauwels 19 65)
Infected Nail Management
Infected Nail – Trifocal Osteosynthesis
Infected Nail – Tibiofibular synostosis
Infected Nail- Trifocal Osteosynthesis
Infected Nail- Trifocal Osteosynthesis
Infected tibia /nail removal
X ray and Te99
Compression distraction osteosynthesis
Bowing of fibula
Infected Plate Osteosynthesis- Segmental Transport
Infected Plate Osteosynthesis- Segmental Transport
Infected Plate Osteosynthesis – Segmental Transportation
BMAC in very large gap
• 25 years male • Traffic accident 2yrs 6mths back• Lost other limb above knee• Allograft failed• 20 cm gap
Allograft
After allograft removal
• 20 cm gap• Tibialisation of fibula• Segmental transfer• Membrane induced
osteogenesis
Internal segmental transportation
Rapid transportation
BMAC - Stem cells infiltrated
Thanks to Mr. Abhaikumar, Tricell, Chennai.
Corticotomy through regenerate – II stage
Stage II
After completion
18 months follow up
18 months follow up
What HE needs is a good prosthesis
Tumor – Defect of the articular ends
Tumor – Defect of the articular ends
Should we fuse the ankle when the knee is fused ?
Complications- septic arthritis
• Wire in the joint and knee fusion
Complications- early fusion
Complications –subsidence and deformity of regenerate
Complications
• Shortening
Tibio fibular synostosis - amputation
Observation
• Edges need not be excised• Transport more than 5 cm requires osteotomy
at 2 levels or internal bone transport• Average healing time for 1 cm is 1.8 months –
variable.• Will require few adjustments till completion• No bone graft at docking site
Complications
• Septic arthritis -1• Non union -2• Knee stiffness -2• Delayed regenerate -1• Shortening -2• Amputation -1• Deformity -2
Results • union, • pain, • stiffness of a joint,• Shortening and• return back to the job.
Results
excellent - 14good - 24fair - 06poor - 02in progress - 01
Summary
• Large bone defects are uncommon• Mostly they are young• Part of multiple skeletal injuries/poly trauma• Undergone many procedures• Physically and financially exhausted• Almost always infected
Summary
• Remove implants and sequestrum• Need not resect the ends• Stabilise the bone by Ilizarov fixator• Create contact• Mobilise them early with maximum weight
bearing• Expect complications• How many joints can be fused?
Conclusion
• Limb salvage is most challenging, with lot of inherent problem technical, social and financial
• Try to save the limb till a sensitive foot prosthesis could be made.
• Ilizarov bone transport construction is faster, safer, less expensive and easier to perform.
“Personal experience remains the best teacher”