Lisfranc injury

Lisfranc injury

Lisfranc fracture (marked by the oval) with fractures of the distal second (marked by the arrow), third, and fourth metatarsal bones
Classification and external resources
Specialty Orthopedics
eMedicine orthoped/511

The Lisfranc injury (also known as the Lisfranc fracture, Lisfranc dislocation, Lisfranc fracture dislocation, tarsometatarsal injury, or simply midfoot injury) is an injury of the foot in which one or more of the metatarsal bones are displaced from the tarsus.[1][2] The injury is named after Jacques Lisfranc de St. Martin (2 April 1790–13 May 1847), a French surgeon and gynecologist who described the injury in 1815, after the War of the Sixth Coalition.[3]

Causes

In humans, the midfoot consists of five bones that form the arches of the foot (the cuboid, navicular, and three cuneiform bones) and their articulations with the bases of the five metatarsal bones. Lisfranc injuries are caused when excessive kinetic energy is applied either directly or indirectly to the midfoot and are often seen in traffic collisions or industrial accidents.[4]

Direct Lisfranc injuries are usually caused by a crush injury, such as a heavy object falling onto the midfoot, or the foot being run over by a car or truck, or someone landing on the foot after a fall from a significant height.[5] Indirect Lisfranc injuries are caused by a sudden rotational force on a plantar flexed (downward pointing) forefoot.[4] Examples of this type of trauma include a rider falling from a horse but the foot remaining trapped in the stirrup, or a person falling forward after stepping into a storm drain.[5]

In athletic trauma, Lisfranc injuries occur commonly in activities such as windsurfing, kitesurfing, wakeboarding, or snowboarding (where appliance bindings pass directly over the metatarsals).[6] American football players occasionally acquire this injury, and it most often occurs when the athlete's foot is plantar flexed and another player lands on the heel. This can also be seen in pivoting athletic positions such as a baseball catcher or a ballerina spinning.

Diagnosis

In a high energy injury to the midfoot, such as a fall from a height or a motor vehicle accident, the diagnosis of a Lisfranc injury should, in theory at least, pose less of a challenge. There will be deformity of the midfoot and X-ray abnormalities should be obvious. Further, the nature of the injury will create heightened clinical suspicion and there may even be disruption of the overlying skin and compromise of the blood supply. Typical X-ray findings would include a gap between the base of the first and second toes.[7] The diagnosis becomes more challenging in the case of low energy incidents, such as might occur with a twisting injury on the racquetball court, or when an American Football lineman is forced back upon a foot that is already in a fully plantar flexed position. Then, there may only be complaint of inability to bear weight and some mild swelling of the forefoot or midfoot. Bruising of the arch has been described as diagnostic in these circumstances but may well be absent.[8] Typically, conventional radiography of the foot is utilized with standard non-weight bearing views, supplemented by weight bearing views which may demonstrate widening of the interval between the first and second toes, if the initial views fail to show abnormality. Unfortunately, radiographs in such circumstances have a sensitivity of 50% when non-weight bearing and 85% when weight bearing, meaning that they will appear normal in 15% of cases where a Lisfranc injury actually exists.[9] In the case of apparently normal x-rays, if clinical suspicion remains, advanced imaging such as magnetic resonance imaging (MRI) or X-ray computed tomography (CT) is a logical next step.[10]

Classification

There are three classifications for the fracture:[11]

  1. Homolateral: All five metatarsals are displaced in the same direction. Lateral displacement may also suggest cuboidal fracture.
  2. Isolated: one or two metatarsals are displaced from the others.
  3. Divergent: metatarsals are displaced in a sagittal or coronal plane and may also involve the intercuneiform area and include a navicular fracture.

Treatment

Options include operative or non-operative treatment. If the dislocation is less than 2 mm, the fracture can be managed with casting for six weeks.[12] The patient's injured limb cannot bear weight during this period. For severe Lisfranc injuries, open reduction with internal fixation (ORIF) and temporary screw or Kirschner wire (K-wire) fixation is the treatment of choice.[13] The foot cannot be allowed to bear weight for a minimum of six weeks. Partial weight-bearing may then begin, with full weight bearing after an additional several weeks, depending on the specific injury. K-wires are typically removed after six weeks, before weight bearing, while screws are often removed after 12 weeks.[13]

When a Lisfranc injury is characterized by significant displacement of the tarsometatarsal joint(s), nonoperative treatment often leads to severe loss of function and long-term disability secondary to chronic pain and sometimes to a planovalgus deformity. In cases with severe pain, loss of function, or progressive deformity that has failed to respond to nonoperative treatment, mid-tarsal and tarsometatarsal arthrodesis (operative fusion of the bones) may be indicated.[14]

History

During the Napoleonic Wars, Jacques Lisfranc de St. Martin encountered a soldier who suffered from vascular compromise and secondary gangrene of the foot after a fall from a horse.[3] Subsequently, Lisfranc performed an amputation at the level of the tarsometatarsal joints,[3] and that area of the foot has since been eponymously referred to as the "Lisfranc joint".[15] Although Lisfranc did not describe a specific mechanism of injury or classification scheme, a Lisfranc injury has come to mean a dislocation or fracture-dislocation injury at the tarsometatarsal joints.[16]

See also

References

  1. ↑ Lisfranc's fracture at Who Named It?
  2. ↑ "Lisfranc's fracture". The Free Dictionary.
  3. 1 2 3 Lisfranc, J (1815). Nouvelle méthode opératoire pour l'amputation partielle du pied dans son articulation tarso-métatarsienne: méthode précédée des nombreuses modifications qu'a subies celle de Chopart (in French). Paris: L’imprimerie de Feuguery. pp. 1–52.
  4. 1 2 Smith BR, Begeman PC, Leland R, Meehan R, Levine RS, Yang KH, King AI (2005). "A Mechanism of Injury to the Forefoot in Car Crashes". Traffic Injury Prevention 6 (2): 156–69. doi:10.1080/15389580590931635. ISSN 1538-9588. PMID 16019401.
  5. 1 2 Chan, SCF; Chow, SP (2001). "Current concept review on Lisfranc injuries" (PDF). Hong Kong Journal of Orthopaedic Surgery 5 (1): 75–80.
  6. ↑ Lievers WB, Frimenko RE, Crandall JR, Kent RW, Park JS (2012). "Age, sex, causal and injury patterns in tarsometatarsal dislocations: a literature review of over 2000 cases". Foot 22 (3): 117–124. doi:10.1016/j.foot.2012.03.003. PMID 22560256.
  7. ↑ Davies MS, Saxby TS (September 1999). "Intercuneiform instability and the "gap" sign". Foot Ankle Int 20 (9): 606–9. PMID 10509690.
  8. ↑ Ross G, Cronin R, Hauzenblas J, Juliano P (1986). "Plantar ecchymosis sign: a clinical aid to diagnosis of occult Lisfranc tarsometatarsal injuries". J Orthop Trauma 10 (2): 119–122. PMID 8932671.
  9. ↑ Rankine JJ, Nicholas CM, Wells G, Barron DA (April 2012). "The diagnostic accuracy of radiographs in Lisfranc injury and the potential value of a craniocaudal projection". AJR Am J Roentgenol 198 (4): W365–9. doi:10.2214/AJR.11.7222. PMID 22451574.
  10. ↑ Hatem SF (November 2008). "Imaging of Lisfranc Injury and Midfoot Sprain". Radiologic Clinics of North America 46 (6): 1045–1060. doi:10.1016/j.rcl.2008.09.003. PMID 19038612.
  11. ↑ Wheeless CR (2011). "Lisfranc's Fracture / TarsoMetatarsal Injuries". Wheeless' Textbook of Orthopaedics online. Durham, North Carolina: Duke Orthopaedics. Retrieved 2012-06-05.
  12. ↑ Lattermann C, Goldstein JL, Wukich DK, Lee S, Bach BR Jr (July 2007). "Practical management of Lisfranc injury in athletes". Clin J Sport Med 17 (4): 311–51. doi:10.1097/JSM.0b013e31811ed0ba. PMID 17620787.
  13. 1 2 Mulier, T; Reynders, P; Sioen, W; Van Den Bergh, J; De Reymaeker, G; Reynaert, P; Broos, P (1997). "The Treatment of Lisfranc Injuries" (PDF). Acta Orthopaedica Belgica 63 (2): 82–90. ISSN 0001-6462. PMID 9265792.
  14. ↑ Mann, RA; Prieskorn, D; Sobel, M (1996). "Mid-tarsal and tarsometatarsal arthrodesis for primary degenerative osteoarthrosis or osteoarthrosis after trauma". Journal of Bone and Joint Surgery, American Volume 78 (9): 1376–85. PMID 8816654.
  15. ↑ Lisfranc's joint at Who Named It?
  16. ↑ DiDomenico, LA; Cross, D (2012). "Tarsometatarsal/Lisfranc Joint" (PDF). Clinics in Podiatric Medicine and Surgery 29 (2): 221–42. doi:10.1016/j.cpm.2012.01.003. PMID 22424486.

External links

• Lisfranc Fracture Club - Mutual Help and Support group

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