Use of an ex vivo canine ventral slot model to test the efficacy of a piezoelectric cutting tool for decompressive spinal surgery.

摘要: Objective To test the efficacy of a piezoelectric instrument (PI) for bone removal during ventral slot surgery. Study Design Ex vivo feasibility study. Sample Population Cadaveric canine cervical spinal specimens (n = 3; C1–7; C1–T1; C2–T1). Methods The cord each explanted unit was replaced with saline-filled latex condom. In 8 disc spaces, surgery performed using previously reported technique. Bone achieved motorized burr (MB). removed via en bloc ostectomy PI that selectively cuts mineralized tissue. Surgical duration and operating field visibility were recorded. Rupture fluid filled condom used as measure iatrogenic collateral trauma. Computed tomography to morphometry. Results Mean surgical (23.4 minutes) significantly shorter than MB (34.1 minutes; P = .049). Using 4 point Likert scale (4 = excellent, 3 = good, 2 = fair, 1 = poor), median score higher (2) (1; P = .03). The burst twice (1MB, 1PI) elevation dorsal longitudinal ligament; there no significant difference between techniques incidence trauma (P = .99). Regardless technique, bias in deviation towards right (i.e., surgeon's left; P = .021). Conclusions The allowed completion slots time, without an increased right-handed surgeon showed left-sided aiming bias, regardless