Lisfranc Fracture-Dislocations
Transcription
Lisfranc Fracture-Dislocations
Bala Katyal Trainee Advanced Practitioner – Plain Film Reporting May 2011 Lisfranc Fracture-Dislocation History Definition Clinical presentation Mechanism of Injury Classifications Imaging Treatment Conclusion History Jacques Lisfranc Definition Where the metatarsals dislocate from their normal articulation with the mid-tarsal bones Most commonly involves the 1st and 2nd metatarsals and the medial cuneiform Incidence is 1 in 55,000 people each year Easily missed on initial x-rays Can be difficult to diagnose Clinical Presentation Swelling and large lump in the midfoot Unable to weight bear Tenderness along the tarso-metatarsal joints Tenderness with passive abduction and pronation of the forefoot with the hindfoot held flexed Clinical Presentation Instability of the Lisfranc Joint Plantar midfoot ecchymosis Mechanism Of Injury Hyper-extending the forefoot Catching the forefoot in a hole in the ground Horseback rider falling and hanging the forefoot in the stirrup Commonly seen as a Charcot’s Joint in diabetic patients RTA’s – especially when foot is trapped in dorsiflexion under the foot pedal Crush injuries Mechanism Of Injury Placing the foot into extreme plantar flexion with an axial load Classification Sprains are the most common injury to the tarso- metatarsal ligament, it is graded I, II and III (Burroughs et al 1998) Grade I - Pain at the joint, minimal swelling and no instability of the joint Grade II – Increased pain and swelling of the joint, with mild laxity but no instability Grade III – Complete ligamentous disruption and may represent a fracture-dislocation Classification Classification Adam and Dixon 2008, say there are 2 basic types of Lisfranc injuries, homolateral and divergent: Homolateral – Where the metatarsals are shifted laterally Divergent – The first metatarsal shifts medially and the remainder of the forefoot shifts laterally Classification Classification Myerson 1986, identifies 3 classifications of Lisfranc Injuries: Total incongruity – Can be either medially or laterally displaced Medial Lateral Classification Partial incongruity – Either medial (Type B1)or lateral (Type B2), the most common type Type B1 Type B2 (partial) Type B2 (complete) Classification Divergent displacement – Either partial (type C1) or total (type C2) Type C1 Type C2 Imaging First investigation is a plain film x-ray AP and Oblique Imaging Plain film plays a very important role in diagnosing Lisfranc fracture-dislocations To look for alignment On the AP, the lateral border of the 1st metatarsal is aligned with the Lateral border of the medial cuneiform Imaging On the AP the medial border of the 2nd metatarsal is in line with the medial border of the intermediate cuneiform Imaging On the oblique view Medial and lateral borders of the lateral cuneiform should align with the medial and lateral borders of the 3rd metatarsal Imaging Also on the oblique Medial border of the cuboid should align with the medial border of the 4th metatarsal Imaging Radiology.com 2006 Imaging Radiology.com 2006 Imaging Patients still may need further plain film views Weight-bearing AP Weight-bearing lateral Stress views done under anaesthetics Imaging CT plays an important role in looking at the widening of the joint spaces CT also can detect associated fractures Help with confirming the diagnosis Help to formulate the surgical treatment plan Imaging MRI can be useful to evaluate the soft tissue damage Looks at the Lisfranc ligament Not routinely used Imaging Doppler ultrasound may be used to look at the dorsalis pedis artery if it can not be felt by hand Nuclear medicine could be used but you could not distinguish any fractures Fractures Associated with Lisfranc Dislocations Base of 2nd metatarsal Cuboid Fractures of the shafts of the metatarsals Dislocations of the 1st (medial) and 2nd (middle) and cuneonavicular joints Navicular Treatment For a Lisfranc sprain: Non-weight bearing In a cast or removable boot 4-6 weeks recovery Physiotherapy Gradual return to activity Treatment For a Lisfranc fracture-dislocation, it is usually surgery ORIF K-Wires Arthrodesis Complications with surgery Can take up to 1 year to recover Examples of Lisfranc Injuries 1 Examples of Lisfranc Injuries 1 Examples of Lisfranc Injuries 2 Examples of Lisfranc Injuries 3 Example of Lisfranc Injuries 3 Conclusion Serious injury Difficult to diagnose Can lead to compartment syndrome Can have vascular compromise if not treated quickly A quick and accurate diagnosis can allow the appropriate treatment to take place efficiently Can take a long time to recover Complications that may lead to further surgery Advance practice plays an important role References ADAM, A and DIXON, A.K. (2008) Grainger and Allison’s Diagnostic Radiology. A textbook of Medical Imaging. 5th Edition, volume 2 in GRAINGER, R.G. and ALLISON, D.J. (eds.). London:Churchill Livingstone AMERICAN COLLEDGE OF FOOT AND ANKLE SURGEONS (2009) Lisfranc Injuries. Accessed 22nd April 2010) BURROUGHS, K.E. and REIMER, C.D. and FIELDS, K.B. (1998). ‘Lisfranc injury of the foot: A commonly Missed diagnosis’. Published by the American Academy of Family Physicians CHAN, O. (2007) ABC of Emergency Radiology. 2nd Edition. BMJ Books. Oxford:Blackwell Publishing FOOT EDUCATION (2009) Lisfranc Fracture ORIF. www.footeducation.com/lisfranc-fracture-orif (Accessed 14th May 2010) HELMS, C.A. (1995) Fundamentals of Skeletal Radiology. 2nd Edition. London:W.B. Saunders Company References HOWELL, G.A. (2009) Lisfranc Ligament Tear. www.radsource.us/clinic/0908 (Accessed 14th May 2010) LARSEN, D. And MORRIS, P. (2006) Limb X-Ray Interpretation. London:Whurr Publishers LEARNING RADIOLOGY.COM (2006) Lisfranc Fracture-Dislocation. www.learningradiology.com (Accessed 22nd April 2010) LISLE, D.A. (2007) Imaging for students: 3rd Edition. London: Hodder Arnold McCONNELL, J. AND EYRES, R. AND NIGHTINGALE, J. (2005) Interpreting Trauma Radiographs. Oxford:Blackwell Publishing MYERSON (1986) cited in East Lancashire Foot and Ankle Hyperbook, Lisfranc Injuries www.foothyperbook.com (Accessed 23rd May 2010) RABY, N. And BERMAN, L. And DE LACY, G. (2009) Accident and Emergency Radiology. A survival Guide. 2nd Edition. London:Elsevier Saunders References THE CENTRE FOR ORTHOPAEDICS AND SPORTS MEDICINE (2000) Lisfranc Fracture-Dislocation (Accessed 22nd April 2010) TREVINO, S.G. (2009) Lisfranc Fracture Dislocation www.emedicine.medscape.com (Accessed 23rd May 2010) VANDERHEIDEN, T. (2008) Lisfranc Injury. www.about.com (Accessed 15th May 2010) WATURA ET AL. BJR 77 (Supplement 1):S46 Figure 10. www.BJR.com (Accessed 22nd April 2010) WHEELESS, C.R. (2009) Lisfranc’s Fracture/Tarso-metatarsal Injuries. Duke Orthopaedics presents Wheeless’ Textbook of Orthopaedics. www.wheelessonline.com (Accessed 14th May 2010) Any Questions