Optimization of portal placement for endoscopic calcaneoplasty.

Purpose: The purpose of our study was to determine an anatomic landmark to help locate portals in endoscopic calcaneoplasty.

Methods: The device for optimal portal placement (DOPP) was developed to measure the distance from the distal fibula tip to the calcaneus (DFC) in 28 volunteers to determine the location of the posterosuperior calcaneal border in relation to this line.

Results: The DOPP showed an interobserver reliability of 0.