title: Relationship between stress ankle radiographs and injured ligaments on MRI.
abstract: OBJECTIVE
  This study was performed to investigate the relationship between the injured lateral ankle ligaments on MRI and stress ankle radiographs.
  
  
  METHODS
  Two hundred and twenty-nine consecutive patients (mean age 35.5 years, SD 14.6 years; 136 males and 93 females) that underwent ankle stress radiographs and MRI for lateral ankle instability were included. Tibiotalar tilt angle and anterior translation of talus were measured on stress ankle radiographs. Degree of lateral ligaments (anterior talofibular, calcaneofibular, and posterior talofibular) and deltoid ligament injuries were evaluated and scored as intact (0), partial injury (1), and complete injury (2) on MR images. Effusion of ankle joint was also recorded. The effects of gender, age, injuries of ligaments, and ankle joint effusion on stress radiographs were statistically analyzed.
  
  
  RESULTS
  Gender (p = 0.010), age (p = 0.020), and anterior talofibular ligament (ATFL) injury (p < 0.001) were the factors significantly affecting tibiotalar tilt angle. Posterior talofibular ligament (PTFL) injury (p = 0.014) was found to be the only significant factor affecting the anterior translation on the anterior drawer radiographs.
  
  
  CONCLUSIONS
  ATFL injury and PTFL injury on MRI significantly affected tibiotalar tilt angle and anterior drawer on stress radiographs. Other factors, such as age and gender, need to be considered in evaluating radiographic lateral ankle instability.
authors: Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, 300 Gumi-Dong, Bundang-Gu, Sungnam, Kyungki, 463-707, South Korea.
authors: Kyoung Min
authors: KM
authors: Lee
authors: Chin Youb
authors: CY
authors: Chung
authors: Soon-Sun
authors: SS
authors: Kwon
authors: Myung Ki
authors: MK
authors: Chung
authors: Sung Hun
authors: SH
authors: Won
authors: Seung Yeol
authors: SY
authors: Lee
authors: Moon Seok
authors: MS
authors: Park
mesh_terms: D016512:Ankle Injuries / Q000175:diagnosis* / Q000453:epidemiology*; D015984:Causality; D015897:Comorbidity; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000175:diagnosis* / Q000453:epidemiology*; D008022:Ligaments / Q000000981:diagnostic imaging / Q000293:injuries / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000706:statistics & numerical data*; D008297:Male; D056888:Patient Positioning / Q000706:statistics & numerical data; D015995:Prevalence; D015203:Reproducibility of Results; D056910:Republic of Korea / Q000453:epidemiology; D012307:Risk Factors; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D013223:Statistics as Topic; D014057:Tomography, X-Ray Computed / Q000706:statistics & numerical data*
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