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Objective:To compare biomechanical stabilities between screw-plate fixation and non-cannulated screw fixation for Lisfranc ligament injury by a 3-D finite element analysis.Methods:A 3-D model of a healthy foot was developed from computed tomography images. The 1st and the 2nd dorsal tarsometatarsal ligaments and Lisfranc ligament were cut in the 3-D model of a healthy foot to establish a Lisfranc ligament injury model, in which screw-plate fixation (with 2 locking plates and 8 standard screws and one non-cannulated screw) and non-cannulated screw fixation (with 3 non-cannulated screws) for Lisfranc ligament injury were simulated respectively. Finite element analyses were carried out by Abaqus 6.14 software after loads were added in the 3-D models of screw-plate fixation and non-cannulated screw fixation for Lisfranc ligament injury. The overall stress-strain nephogram, the stress distribution and displacement of the foot bone, and the stress distribution on the internal fixation system were compared between the 2 kinds of models.Results:Under the same load, the stress of the whole screw-plate fixation was concentrated on the fixators, and the stress of the non-cannulated screws was also greater than that of the bones. In both models, the strain of the whole foot led to arch collapse, especially in the medial column. The maximum stress on the screw holes in the medial and middle columns in the screw-plate fixation model was 39.91 MPa, smaller than that in the non-cannulated screw fixation model (53.13 MPa). The relative displacement of the first metatarsal joint in the screw-plate fixation model was 8.515 × 10 -1 mm, much greater than that in the non-cannulated screw fixation model (3.893 × 10 -1 mm). Stress concentration was observed in both models. The stress of the screw-plate system was concentrated on the fibular side of the middle section of the plate used to fix the first tarsometatarsal joint, decreasing towards both ends. The maximum stress of the non-cannulated screws was located in the middle of the medial column screw for fixation of the first tarsometatarsal joint, significantly greater than those of the both ends. The maximum stress of the screw-plate system was 239.5 MPa, smaller than that of the non-cannulated screws (256.8 MPa). Conclusions:Non-cannulated screw fixation demonstrates a greater biomechanical stability for Lisfranc ligament injury than screw-plate fixation. However, the former may have a higher risk of screw breakage because it bears a greater stress.
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Introducción: Las lesiones de la articulación de Lisfranc se producen por traumas de alta energía; pero cuando se presentan en pacientes con enfermedad de Hansen y daño del sistema nervioso periférico, los traumas repetitivos de pequeña intensidad pueden conducir a este tipo de lesión. Objetivo: Presentar un caso interesante dada la asociación en un paciente con Hansen de una lesión de Lisfranc causado por un trauma de baja energía. Presentación de caso: Paciente de 64 años de edad fototipo V, con antecedentes de Hansen Lepromatoso, que por traumas repetitivos de baja intensidad y un proceso séptico sobreañadido, presentó fractura-luxación de Lisfranc del tipo divergente, se comentan los antecedentes, el cuadro clínico, los exámenes laboratorio, ultrasonidos, estudio radiológico y el tratamiento impuesto. Conclusiones: La discapacidad en manos y pies por trastornos neurológicos en pacientes con lepra lepromatosa de más de 5 años de evolución es bastante frecuente, pero asociado a luxofractura de Lisfranc de tipo divergente, por trauma de baja intensidad, no lo es, ya que este tipo de lesión normalmente se produce por traumas de alta energía(AU)
Introduction: Lisfranc joint lesions are produced by high energy traumas, but when they present in patients with Hansen´s disease and damage to the peripheral nervous system, the low intensity repeated traumas can lead to this type of lesion. Objective: To present an interesting case, given a particular association on a patient with Hansen´s disease and a Lisfranc lesion, caused by a low energy trauma. Case presentation: 64 years old Phototype V patient with antecedents of lepromatous Hansen´s disease who presented Lisfranc fracture-dislocation of a divergent type after low intensity repeated traumas, and a septic superadded process. The antecedents, clinical picture, laboratory tests, ultrasounds, radiological study, and the treatment indicated are all analyzed. Conclusions: Disability in hands and feet due to neurological disorders in patients with lepromatous leprosy of more than 5 years of evolution is very frequent, but it is not so frequent when associated to a Lisfranc fracture-dislocation of a divergent type due to low intensity trauma, because this type of lesion is normally caused by high energy traumas(AU)
Subject(s)
Humans , Male , Middle Aged , Wounds and Injuries , Peripheral Nervous System , Fracture Dislocation/complications , Leprosy/complicationsABSTRACT
Objective To summarize the clinical experience of operation treatment of Lisfranc fracture dislocation,and evaluate its clinical effect.Methods Thirty-nine patients with Lisfranc joint injuries (46 sides) were managed with open reduetlon as well as internal fixation with serews and Kirsehnerwlres.Results All the patients were followed up from12.0 to 42.0 months,the average was (21.1 ± 1.8) months.Evaluated the clinical effect according to the American Orthopaedic Foot and Ankle Society (AOFAS) midfoot score standard,there were 29 cases of excellent,8 cases of good,and 3 cases of aceeptable.Conclusion By Kirschner wire combining with screw fixation,open reduction and internal fixation may achieve satisfactory clinical results for the treatment of Lisfranc joint injurie.The operation is simple and fast,small trauma,less complications and can obtain good effects.
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The Lisfranc joint complex is an anatomical association of many bones and articulation, restrained by an even more complex network of ligaments, capsules, and fascia, which must work in concert to provide normal and painless motion. Careful diagnostic workup with high-quality radiographs and computed tomography of the foot are used to diagnose injuries and fractures of this complex. We have to understand the normal anatomy and injury mechanism in order to appropriately treat Lisfranc injuries. Good results have been associated with anatomic reductions of all bones, which was achieved with restoration of proper alignment.
Subject(s)
Capsules , Fascia , Foot , Joints , LigamentsABSTRACT
Injuries to the Lisfranc joint are relatively rare, but they are often misdiagnosed or inadequately treated, resulting in poor long-term outcomes. Understanding of anatomical structure and injury mechanism, careful clinical and radiographic evaluations are needed to recognize and treat Lisfranc joint injuries. In this article, we review the anatomy, biomechanics, injury mechanisms, injury classification, clinical presentation, radiographic evaluation, treatment, outcome, and complications of Lisfranc joint injuries.
Subject(s)
Classification , Diagnosis , JointsABSTRACT
PURPOSE: The purpose of this study is to retrospectively analyze the clinical results of screws and Kirschner wire (K-wire) fixation in patients with fracture dislocation of Lisfranc joint and the consequence of screw breakage. MATERIALS AND METHODS: Sixty patients underwent Lisfranc joint open reduction and removal of internal fixators from January 2007 to December 2011. Forty-nine cases (81.7%) underwent operations with screw alone, and 11 cases (18.3%) underwent operations with both screws and K-wires. Type of internal fixators, duration of internal fixator removal, breakage of internal fixators and satisfaction with reduction were investigated. Additionally, American Orthopaedic Foot and Ankle Society (AOFAS) midfoot scales were analyzed. RESULTS: The internal fixator was broken in 5 cases (8.3%). The average duration of instrument removal was 154 days in the non-broken screw group and 268.6 days in the broken screw group (p<0.05). The average AOFAS midfoot scale was 77.4 in the non-broken screw group and 74.2 in the broken screw group. The most commonly damaged portion was the first tarsometatarsal (Lisfranc) joint. CONCLUSION: Treatment with screws and K-wires was effective in patients with fracture dislocation of Lisfranc joint. The appropriate time for screw removal should be considered.
Subject(s)
Humans , Ankle , Bone Screws , Joint Dislocations , Foot , Internal Fixators , Joints , Retrospective Studies , Tarsal Joints , Weights and MeasuresABSTRACT
PURPOSE: The purpose of this study was to assess the treatment outcomes and prognosis of Lisfranc joint fracture and dislocation according to the mechanism of injury and treatment method. MATERIALS AND METHODS: Twenty six patients with Lisfranc fracture-dislocation who had been treated surgically were included in this retrospective study. The patients were divided into two groups according to mechanism of injury: direct crushing injury (16 patients) and indirect rotational or compressive injury (10 patients). The patients were also divided into three groups according to the surgical methods. The parameters used were radiographic evaluation, patients' subjective satisfaction levels, length of hospital stay, and the American Orthopaedic Foot and Ankle Society (AOFAS) midfoot score. Statistical analysis was performed. RESULTS: The mean postoperative AOFAS midfoot score was 78.7. The mean length of stay was 39.6 days. Statistically significant differences in subjective satisfaction, AOFAS midfoot score, and length of hospital stay were observed between the two groups (p0.05). CONCLUSION: Mechanism of trauma and the severity of soft-tissue injury were significant prognostic factors affecting the surgical outcomes of Lisfranc joint fracture and dislocation.
Subject(s)
Humans , Ankle , Joint Dislocations , Foot , Joints , Length of Stay , Prognosis , Retrospective StudiesABSTRACT
PURPOSE: To evaluate the effectiveness of intraoperative stress test for diagnosis of occult Lisfranc injury. MATERIALS AND METHODS: Between April 2009 and October 2012, 21 patients with occult Lisfranc injuries underwent intraoperative stress test and internal fixation. There were 11 males and 10 females with an average age of 45.3 years (range, 23~79 years). Injuries were caused by traffic accident in 10 cases, indirect force (twisting injury) in 8 cases, and crush in 2 cases, falling from a height in 1 case. Unstable injuries on stress radiograph in occult injury of Lisfranc joint were treated by open reduction or closed reduction and fixation with cannulated screw or K-wire. Radiological evaluation was assessed according to preoperative and postoperative diastasis between 1st and 2nd metatarsal base. RESULTS: Assoicated injuries were 9 cases of metatarsal fractures, 6 cases of cuneiform fractures and 6 cases of both metatarsal and cuneiform fractures. Medial and middle column fixation was in 13 cases, and three columns fixation was in 8 cases. Initial diastasis between 1st and 2nd metatarsal base was 2.8 mm (1.3~4.7 mm) on AP radiograph and postoperative diastasis between 1st and 2nd metatarsal base was 1.2 mm (0.5~2.4 mm) on AP radiograph. CONCLUSION: Even there is no sign of clear Lisfranc injury, it is necessary to pay attention and give evaluation on circumstances of occult Lisfranc injuries with metatarsal or cuneiform fractures. Intraoperative stress test is helpful to diagnose an occult Lisfranc injury. For unstable injuries on stress radiographs of occult Lisfranc joint injury, operative treatment with open or closed reduction and internal fixation is useful method.
Subject(s)
Female , Humans , Male , Accidents, Traffic , Exercise Test , Joints , Metatarsal BonesABSTRACT
Lisfranc joint injuries are rare and account for 0.2% of all injuries. The pattern of Lisfranc injuries varies from low-energy ligamentous sprain to high-energy fractures or crushing injuries. Early diagnosis and appropriate treatment of Lisfranc injuries are important to prevent chronic foot pain and dysfunction.
Subject(s)
Early Diagnosis , Foot , Joints , Ligaments , Sprains and StrainsABSTRACT
Objective To summarize the clinical experience in treatment of the Lisfranc joint injury with open reduction and internal fixation at early stage. Methods Twelve patients ( including ten males and two females at average age of 34 years) with early stage Lisfranc joint injury received open reduction and screw/wire fixation from 2005 to 2010. According to the Myerson classification, there were two patients with type A, eight with type B and two with type C. All the patients received open reduction and internal fixation with screw or Kirschner wire within 17 days after injury. The post-operative function was estimated by mid-foot scoring scale of AOFAS. X-ray and CT scan were used in radiography estimation. Results All the patients were followed up for average 33 months ( range, 6-60 months). The mean score of post-operative mid-foot scoring scale of AOFAS was 74.5 points ( range, 53-96 points), with excellent result in eight patients, good in two and fair in two. The anatomical reduction was observed in eight patients and all the patients obtained bony union according to the results of X-ray and CT scan.There was no any complication found.Conclusions Open reduction and internal fixation is a good choice for the treatment of Lisfranc joint injury at early stage. A preoperative comprehensive analysis combined with clinical X-ray and CT scan is necessary.
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PURPOSE: The purpose of this study was to evaluate retrospectively the clinical results of closed reduction and percutaneous screw fixation for unstable injuries on stress radiographs in subtle injuries of Lisfranc joint. MATERIALS AND METHODS: From June 1997 to March 2003, 6 cases of unstable injuries on stress radiograph in subtle injuries of Lisfranc joint were treated by percutaneous cannulated screw fixation after closed reduction. All cases were injuried by indirect force (twisting injury). The average diastasis between the 1st and 2nd metatarsal base was 3 mm (2-4 mm) on initial nonweight bearing AP radiograph. The average follow-up period was 20 months. Clinical evaluation was assessed according to the American Orthopedic Foot and Ankle Society (AOFAS) midfoot score. RESULTS: The AOFAS midfoot score was average 86 (80-90) points. The average diastasis between 1st and 2nd metatarsal base was 2 mm (1-3 mm) on weight bearing AP radiograph in final follow up. The final diastasis was increased slightly than diastasis in initial postoperative radiographs. But the clinical results were good. There was no correlation between the degree of diastasis and the clinical results. On weight bearing lateral radiograph, the average difference with normal foot in the distance between plantar aspect of 5th metatarsus and medial cuneiform was 2 mm (0-3 mm). One case had mild arthritic change on the radiographs CONCLUSION: When the Lisfranc injuries, especially in the subtle injuries were suspicious, the stress views are helpful to assess stability of the Lisfranc injuries and planning of treatment. For unstable injuries on stress radiographs in subtle injuries of Lisfranc joint, closed reduction and percutaneous screw fixation is useful method to expect good clinical results.