Online appendix

Table 2: Percentage of agreement for the evaluation criteria of the calcaneus

ANATOMICAL LANDMARKS / Percentage of agreement
Yes / No / Selective
Congruency
Congruency of the talonavicular joint / 27% / 60% / 13%
Congruency of the Calcano-Cuboid joint / 94%I / 6% / 0%
Congruency of the Posterior Talo Calcaneal joint / 94%II / 6% / 0%
Congruency of the Anterior Talo Calcaneal joint / 80% III / 20% / 0%
Varus/valgus position tuber / 88%I / 13% / 0%
Distances
Heel height / 17% / 83%II / 0%
Fat pad height / 6% / 94%I / 0%
Length of Achilles tendon fulcrum / 17% / 83%II / 0%
Length of the calcaneus / 13% / 87%II / 0%
Calcaneal facet height / 17% / 83%II / 0%
Fibulocalcaneal distance / 13% / 80%III / 7%
Angles
Böhlers angle / 94%I / 0% / 6%
Gissanes angle / 93%III / 7% / 0%
Arch angle / 7% / 93%III / 0%
Talocalcaneal angle / 19% / 81%I / 0%
Calcaneal inclination angle / 11% / 83%II / 6%
Tibiotalar angle / 17% / 83%II / 0%
Talar horizontal angle / 19% / 81%I / 0%
Talar declination angle / 19% / 81%I / 0%
Tibiocalcaneal angle / 6% / 94%I / 0%
Calcaneal facet inclination angle / 11% / 89%II / 0%
Fracture reduction / Percentage of agreement
Yes / No / Selective
Presence of step-offs
Step-off in the Calcano-Cuboid joint / 94%I / 6% / 0%
Step-offs in the Posterior Talo Calcaneal joint / 94%I / 6% / 0%
Step-offs in the Processus Anterius / 83% I / 17% / 0%
Step-offs in the Anterior Talo Calcaneal joint / 60% / 33% / 7%
Extra-articular step-offs / 20% / 80%III / 0%
0 mm / < 2 mm / Other
Threshold of acceptability step-offs / 13% / 88%I / 0%
Yes / No / Selective
Presence of gaps
Gaps in the Calcano-Cuboid joint / 88%I / 25% / 0%
Gaps in the Posterior Talo Calcaneal joint / 94%I / 6% / 0%
Gaps in the Processus Anterius / 83%II / 17% / 0%
Gaps in the Anterior Talo Calcaneal joint / 60% / 33% / 7%
Extra-articular gaps / 13% / 80%III / 7%
0 mm / < 2 mm / Other
Threshold of acceptability of gaps / 0% / 88%I / 13%
Yes / No / Selective
Presence of bone fragments
Bone fragments in the Calcano-Cuboid joint / 94%I / 6% / 0%
Bone fragments in the Posterior Talo Calcaneal joint / 100%I / 0% / 0%
Bone fragments in the Anterior Talo Calcaneal joint / 87%III / 13% / 0%
Extra-articular bone fragments / 53% / 33% / 13%
Fracture fixation / Yes / No / Selective
Position of the fixating plate / 88%I / 13% / 0%
Length of the screws (not too short) / 88%I / 13% / 0%
Grip of screws in the processus anterius / 73% / 27% / 0%
Grip of screws in the sustentaculum / 89%II / 11% / 0%
Intra-articular protrusion of screws in the Posterior Talo Calcaneal joint / 94%I / 6% / 0%
Intra-articular protrusion of screws in the Anterior Talo Calcaneal joint / 93%III / 0% / 0%
Intra-articular protrusion of screws in the Calcano-Cuboid joint / 94%I / 6% / 0%
Protrusion of screws through the medial wall / 89%II / 11% / 0%
Protrusion of screws through the tuber calcanei / 81%I / 19% / 0%