Preliminary Results of Measurements of Frontal Plane Knee Alignment Using a Standardized, Sonographic-Assisted Digital Photograph—A Reliable and Accurate Alternative to a Full-Leg Radiograph?

(1) Clinical alternatives to the full-leg radiograph (FLR) for determining frontal plane lower limb alignment have shown mixed results so far concerning reliability and accuracy. In addition, intercondylar respectively intermalleolar distance (ICD/IMD) measurement is limited in interpretation of its results. The purpose study present a standardized, sonographic-assisted photographic (SPM) leg axis using digital photograph compare it with gold standard anterior–posterior FLR. (2) Adults who had recently received an FLR were included study. After center hip joint knee gap standing position via ultrasound, standardized was taken. Subsequently, hip–knee–ankle angle (HKA) measured image editing program SPM FLRs. Mean deviation (MD), Pearson’s correlation coefficient clinical method’s interclass (ICC) calculated. (3) Of 18 subjects (8 male 10 female), respectively, 34 extremities been Their mean BMI 25.5 kg/m2. between two methods < 30 kg/m2 reliably high (r = 0.93, p 0.001). HKAs derived from FLRs showed (MD) 2.4° (range 0.1–6.0°) average ICC among all examiners conducting 0.99 (CI 0.95–0.99, MD ≥ increased significantly (MD 5.5°; n 10, (4) allows sufficiently accurate patients than methodology cases needs well-trained examiners. Nevertheless, as screening method field children adolescents, this can be recommended daily routine.