Răzvan Codrin Bandac 1 1 Grigore T. Mechanisms of injury are direct and indirect, including traffic accidents and sports. Clinical signs and symptoms are: midfoot pain, inability to bear weight, leg deformity and swelling, and plantar ecchymosis. Pedal artery or deep peroneal nerve may be compromised and the compartment syndrome may occur.
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Radiographic incidences reveal changes and dislocations in Aspen pierdere în greutate baton rouge la interlining. Stress radiographs are helpful in unstable lesions. CT is used for diagnosis and preoperative planning. Lisfranc injury classifications can not determine the treatment or suggest prognosis. Medial and middle columns are fixed with 3. Postoperative care includes early mobilization, progressive weight-bearing, and osteosynthesis material removal.
Primary tarsometatarsal arthrodesis is an alternative in lesions with severe joint damage. Immediate complications are common, including neurovascular injury and compartment syndrome, and late complications are posttraumatic midfoot arthrosis, algoneurodistrofic syndrome, chronic foot pain, implant deterioration. Patients require a long rehabilitation period. The incidence of posttraumatic arthritis is high, due to damaged articular surfaces, comminuted fractures, or due to side movements, results of unstable osteosynthesis.
Key words: Lisfranc joint complex, tarso-metatarsal dislocation, internal fixation, midfoot osteoarthritis. This term is used today to describe a wide spectrum of traumatic lesions to this region of the foot. Specialists concern for midfoot trauma is generally quite limited, inevitably leading to a inadequate knowledge and treatment of these lesions.
Thus, Di Giovanni  noted a marked increase in the incidence of foot injuries due to increased frequency and severity of road accidents, and also more associated multiorgan injuries in polytrauma.
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This often puts in difficult situations the medical team, which has to act quickly in chosing the therapeutic maneuvers needed to maintain vital functions, and minimizing the treatment of leg trauma. Further course is burdened by severe pain and severe homolateral leg dysfunctions [3,4], with a psycho-socio-economic impact on the quality of life stronger than with any other injury.
Also, the widespread practice of collision sports, such as rugby, American [5,6] or even European football has led in recent decades to an increase in the incidence of midfood injuries, from simple, classified as midfoot sprains with different degrees of severity, to complex midfood injuries dislocations and fracturedislocationposing serious diagnositic and treatment problems. Heckmann and colleagues explain the need for an as accurate orthopedic or surgical treatment as posible for ensuring perfect alignment of the injured structures, given the extremely complex biomechanics of the foot that does not allow imperfections [7,8].
Strict observance of the therapeutic principles gives satisfactory results, reducing the immediate circulatory disorders, skin necrosisbut also late arthritis, stiffness, vicious calluses complication rate [9,10]. Chapman and colleagues provide an important contribution by presenting detailed notions of biomechanics of the foot for each traumatic areas , and related to the pathophysiologic mechanisms of injury.
These are corroborated with modern imaging methods for obtaining more precise data about disturbances in osteoarticular biomechanics, aimed at initiating immediately an accurate treatment for each injury type . Last, but not least, Greer Richardson, in his "Fractures and dislocations of the foot, reviews thoroughly foot injuries on targeted osteoarticular segments, depending on their biomechanic involvement in the entire complex [5, 7].
The most important contribution is the meticulous clinical-anatomical classification of every entity, thus offering support for optimal treatment of every anatomic injury  and goal is to obtain 46 și încercând să slăbească very good 46 2 surgical Aspen pierdere în greutate baton rouge la, that is a correct osteoarticular alignment, by the standardization of both the approach route and of the means and methods of internal and external fixation in relation with the type of injury according to the anatomical-clinical classification .
Currently, the surgical means of internal and external fixation associated to bone and soft tissue reconstruction in the complex trauma of the foot are presented in detail [7[. The first three metatarsals articulate with the three corresponding cuneiforms: medial, middle and lateral. The fourth and fifth metatarsals articulate with the cuboid bone Figure 1.
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Figure 1 Lisfranc joint - osteo-ligamentous anatomy  Bone alignment of this articular complex is particularly important in understanding the therapeutic considerations of this region [1,3].
Intrinsic stability is due both to the deep location of the second metatarsal base, and even more to the strong ligament complexes attached to every tarsometatarsal joint. Lisfranc ligament, the strongest ligament of this ligament complex, originates in the plantar-lateral aspect of medial cuneiform and inserts into the plantar-medial of second metatarsal base  Pedal artery crosses the midfoot right above the second tarsometatral joint, being particularly predisposed to destruction during Lisfranc injuries, often associated with the onset of compartment syndrome.
Deep peroneal nerve, providing innervation to the first intermetarsian space, can also be injured . The study of this joint mobility shows two distinct components [4. Medial column which is a continuation of the talus, scaphoid and the three cuneiforms with their corresponding metatarsals and lateral column, represented by the calcaneus, cuboid and two lateral metatarsals.
The three medial joints have less mobility, equal to one third of the mobility in the two joints that form the lateral column. The relative medial rigidity is particularly important in ensuring regional stability.
This allows the distal tendon insertions of the anterior calf muscle and long lateral peroneal muscle to change the position of the first ray, allowing the positioning of the first metatarsal head during forefoot ground support, depending on the type of terrain.
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Lateral column is also an area of insertion for exremely strong intrinsic muscle groups, distal tendons of the short lateral peroneal and posterior calf muscles, respectively, in the fifth metatarsal base, providing stability and positioning during walking to the lateral column [2,4]. By contrast, the fourth and fifth tarsometatarsal joints are major points of lateral column mobility, mobility being crucial for the normal function of the foot.
The frequency of these injuries increased primarily due to the increasing incidence of road, work and sports accidents. Although known to be a rare lesion, this was due to diagnostic difficulties. Direct load of the ligament complex along the dorsal aspect of the foot, as in crush injuries, or when a heavy object is falling on the foot on the ground, can result in fracture- dislocations anywhere in this articular complex.
The type of injury depends on the point of force application, often the association of soft tissue destruction complicating even more the treatment. Figure 2. Thus, typical is the sports field 47 3 mechanism of injury, especially in football, namely, when a player is with his foot on the ground and another player forcefully steps on the midfoot area of his foot [6,10]. Indirect load is the most common mechanism of injury, producing the most significant changes in the entire complex, usually by longitudinal loading of the foot in plantar flexion 3.
This leads to association of the dorsal ligaments and then of the plantar ones resulting in varying degrees of bone injuries. This is the most common mechanism in sports accidents Figure 3.
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Figure 3 Lisfranc trauma: indirect mechanism of injury 11 Lisfranc injury occurs in the presence of a force and torque between forefoot and midfoot.
Thus, athlete s forefoot is stuck on the ground, and his whole body weight exerts a twisting force resulting in midfoot twinsting while forefoot is immobilized. For example, the horseman falls off a horse and his foot stays locked in the stirrups, or the windsurfer falls off the board but his foot remains in the board stirrup.
Also, in football players, these injuries frequently occur when his foot in stuck in the turf and he suddenly rotates when changing direction, or his foot is blocked by another player s foot [6,10]. Recent studies have revealed no relationship between the injury mechanism and type of injury [3,5].
Clinical diagnosis is based on a thorough physical examination of the injured leg.
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In isolated lesions, pain along the ligament complex suggests the presence of a possible injury. In athletes, immediately after trauma the injured leg is swollen and even deformed in the medial area, with severe spontaneous pain on midfoot palpation and associated with total functional impairment of this area causing inability to bear weight.
Passive dorsiflexion and individual plantar flexion of metatarsal heads, performed by team physician, will cause pain in proximal joints. Plantar ecchymosis is also a sign suggestive of joint damage [3,4].
Of particular importance is to check immediately the neurovascular status of the injured foot, given the likelihood of damage to pedal artery or deep branch of the peroneal nerve. If these are present, the patient should be immediately referred to a specialized orthopedic unit for further physiacal and laboratory investigation.
In case of arterial injury, the compartment syndrome of the leg cum să pierd grăsime în inghinalul meu imminent, requiring urgent therapeutic measures.
Radiographic evaluation is crucial in the diagnosis and treatment of this injury, being especially used to determine joint stability and the presence and type of associated injuries.
MODERN DIAGNOSTIC AND TREATMENT PRINCIPLES OF LISFRANC MIDFOOT DISLOCATIONS IN ATHLETES
If possible, radiographs at presentation should include weight bearing anteroposterior, lateral, and degree medial oblique views. If weight-bearing radiographs can not be obtained, and there is a suspicion of ligament damage, stress views, with the patient under anesthesia to minimize pain and muscle contraction are required.
If trauma allows, a locoregional anesthesia with Marcaine 0. Any displacement of joint contours exceeding 2 mm, shows ligament instability.
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As preoperative screening tool, CT-scan has an important role in identifying fractures and dislocations relevant for maintaining foot stability and function [3,15]. Classification of Lisfranc injuries.
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Currently there are a number of classifications to quantify the severity of tarsometatarsal fracture-dislocation, but none is helpful in the choice of treatment. Quenu and Kuss [4,7] classified these insuries into three main categories, defined as dislocations or subluxations varying in number and directions: isolated with unidirectional displacement of at least one metatarsal, but not all, usually the first or second rayhomolateral medial or lateral dislocation or subluxation frequently of all metatarsalsand divergent separation of any combination of metatarsals in different directions and in more than one plan.
Although a large number of classifications have described, they are mostly descriptive and are not useful for prognostic or management purposes. For example, Hardcastle and collaborators devided the lesion types into partial incongruenty, total incongruenty, and totally divergent . None of the above mentioned classifications mentions the fractures associated with these lesions, which usually need to be recognized in view of Aspen pierdere în greutate baton rouge la treatment.
Most common in decreasing order of their occurrence are the fractures of the richmond va pierde in greutate, cuneiform and cuboid.
Kuo and colleagues have recently developed a protocol for long-term study of Lisfranc injury, suggesting that injury mechanism would be important in determining prognosis.
Myerson s changes to Quenu and Kuss and Hardcastle classifications are the most commonly used today, as they include more lesions proximal to the inner column of the foot [7,9,10] Figure 5.
Figura 2 Myerson clasificarea of tarsometatarsiene injuries 4 Type A lateral or dorsoplantar displacement of all five metatarsals, with or without fracture of the base of the second metatarsal, termed homolateral.
Type B1 shows medial dislocation, sometimes affecting the intercuneiform or naviculocuneiform joints.
Type B2 the lesions causes lateral dislocation and may involve the the first metatarsocuneiform joint. Type C - injuries are divergent and can be with partial C1 or complete displacement C2. They are prone to complications, especially to compartment syndrome.
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