Confronto ex vivo della tensione ischiatica ottenuta mediante duplice osteotomia pelvica e 2.5 osteotomia pelvica. [Ex vivo comparison of the ischial tension obtained after double pelvic osteotomy and 2.5 pelvic osteotomy].

This cadaveric study was carried out on ten hemi-pelves obtained from mature German Shepherd dogs: unilateral Double Pelvic Osteotomy (DPO) technique and dorsal ischial cortical osteotomy were performed on each left hemi-pelvis. The force, the moment of Angular ventral rotation and the ischial tension were compared between two groups: Double Pelvic Osteotomy (A) and 2.5 Pelvic Osteotomy (B). The outcome were reported in the Table 1. The comparison between the two groups (A-B) was statistically effective (p<0.001). We iphotized that complete fractures of ischium and implant failures can occur after DPO. The dorsal cortex osteotomy of the ischium provides a decrease of the tension on the ischial table in order to facilitate the acetabular rotation and to prevent the fracture of the ischium.