Results of isolated Lisfranc injuries and the effect of compensation claims.

Brisbane Foot and Ankle Centre, Arnold Janssen Centre, Brisbane Private Hospital, Brisbane, Queensland, Australia.
Journal of Bone and Joint Surgery - British Volume (Impact Factor: 2.69). 06/2004; 86(4):527-30.
Source: PubMed

ABSTRACT The results of treatment of Lisfranc injuries are often unsatisfactory. This retrospective study investigated 46 patients with isolated Lisfranc injuries at a minimum of two years after surgery. Thirteen patients had a poor outcome and had to change employment, or were unable to find work as a result of this injury. The presence of a compensation claim (p = 0.02) and a delay in diagnosis of more than six months were associated with a poor outcome (p = 0.01). There was no association between poor functional outcome and age, gender, mechanism of injury or previous occupation. This study may have medico-legal implications on reporting the prognosis for such injuries, and highlights the importance of prompt diagnosis and treatment.

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    ABSTRACT: BACKGROUND: The Lisfranc ligament plays an integral role in providing stability to the midfoot. Variable clinical presentations and radiographic findings make injuries to the Lisfranc ligament notoriously difficult to diagnose. Currently, radiographic evaluation is the mainstay in imaging such injuries; however, ultrasound has been suggested as a viable alternative. The objective of this study was to evaluate the intra-rater and inter-rater reliability in the measurement of the length of the dorsal Lisfranc ligament using ultrasound imaging in healthy, asymptomatic subjects. METHODS: The dorsal Lisfranc ligaments of fifty asymptomatic subjects (n = 100 feet) were imaged using a Siemens SONOLINE Antares Ultrasound Imaging System(C) under low, medium, and high stress loads at 0[degree sign] and 15[degree sign] abducted foot positions. The lengths of the ligaments were measured, and Interclass correlation coefficients were used to calculate within-session intra-rater reliability (n = 100 feet) as well as between-session intra-rater reliability (n = 40 feet) and between-session inter-rater reliability (n = 40 feet). RESULTS: The within-session intra-rater reliability results for dorsal Lisfranc ligament length had an average ICC of 0.889 (min 0.873 max 0.913). The average ICC for between-session intra-rater reliability was 0.747 (min 0.607 max 0.811). The average ICC for between-session inter-rater reliability was 0.685 (min 0.638 max 0.776). CONCLUSIONS: The measurement of the dorsal Lisfranc ligament length using ultrasound imaging shows substantial to almost perfect reliability when evaluating asymptomatic subjects. This imaging modality methodology shows promise and lays the foundation for further work in technique development towards the diagnostic identification of pathology within the Lisfranc ligament complex.
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