Fig. 1
From: The accuracy of digital templating in cementless total hip arthroplasty in dysplastic hips
A Postoperative anteroposterior radiograph of a left Crowe type II, Hartofilakidis type B hip with measurement of location of hip centre with A the horizontal location of hip centre and B the vertical height of the hip centre. B Postoperative anteroposterior radiograph showing the assessment of projected proportion of horizontal uncovering above the acetabular component, calculated as (horizontal distance of the uncovered portion (Y) / horizontal distance between the medial and lateral edge of the implant (X)) × 100% [11]. The arc length (s) of the uncovered portion above the implant was calculated using the formula: s = (v x r x π) / 180, where v denotes the central angle of the uncovered portion above the implant and r the radius of the component [9]