Does Using the Medial or Lateral Humeral Line Improve Reliability of Baumann Angle Measurement on Plain X-Ray? The Effect of Humeral Length Visualized on the X-Ray
Journal of Pediatric Orthopaedics , 05/17/2012
Krengel WF et al. – Intrarater reliability is better for both BA using the lateral humeral line (BA–LHL) and Baumann angle (BA) using the medial humeral line (BA–MHL) than for standard BA (using the estimated central humeral axis). Interrater reliability was best using standard BA. Reliability of all methods is improved when >7 cm of the distal humerus is visible on the radiograph. In addition, at least 7 cm of the distal humerus on anteroposterior radiographs improves reliability of measuring BA.