This study aims to investigate the relationships between Bhler (BA), Gissane (GA), calcaneal inclination (CIA), lateral talocalcaneal (LTCA), and Fowler-Philip (FPA) angles, which play a significant role in the diagnosis of foot deformities and in clinical and surgical decision-making, and age, sex, laterality, body height, and body weight.Additionally, this study aims to establish individualspecific normative reference values.Bilateral weight-bearing lateral foot radiographs (n=850) of 425 individuals (216 males, 209 females; mean age: 45.14 15.82 years) without foot pathology were analyzed.The mean values were BA:30.59 3.5, GA:116.06 4.64, CIA:25.5 3.62, LTCA:44.14 6.87, and FPA:61.44 2.73.There were significant differences compared to measurements reported in other populations.BA, CIA, LTCA, and FPA demonstrated significant differences across age groups (BA: p=0.002;CIA: p<0.001;LTCA: p<0.001;FPA: p<0.001).GA and FPA exhibited significant sex-related differences (GA: p=0.011;FPA: p<0.001).No significant correlation was determined between the angles and side.In males, BA was correlated with height positively (r=0.185,p<0.001), while GA showed a positive correlation (r=0.148,p=0.003) and CIA a negative correlation (r=-0.141,p=0.004) with height in females.Regarding body weight, BA was positively correlated in males (r=0.139,p=0.004), whereas CIA (r=-0.156,p=0.001) and LTCA (r=-0.137,p=0.004) showed negative correlations.In females, LTCA was also correlated with weight negatively (r=-0.193,p<0.001).Given the regression analysis, age was associated with a 0.025 decrease in BA per year (p=0.001).GA was, on average, 1.854 higher in females than in males (p<0.001).Each 1 cm increase in height was related with a 0.075 increase in GA (p=0.001), while each 1 kg increase in body weight was related with decreases of 0.051 in CIA (p<0.001),0.104 in LTCA (p<0.001), and 0.019 in FPA (p=0.024).These findings highlight the necessity of considering age, sex, height, and body weight in addition to population-based reference values when evaluating calcaneal angles.
Altuntas et al. (Sun,) studied this question.