PMC

Comparison of VCD and PSO. a Vertebral column decancellation is a “Y” type osteotomy b Pedicle subtraction osteotomy is a “V” type osteotomy

VCD osteotomy for Pott’s deformity. a Pott’s Kyphotic deformity b A wedge-shaped posterior column was removed c The anterior column was opening when the posterior wedge space was closed

The process of Surgimap Spine for surgical planning. a Measurement the preoperative sagittal parameters: Konstam’s angle, SVA,TK; b Identification the site of osteotomy and the location of wedge-shaped resection. c Simulation of the osteotomy and evaluate the Surgimap-predicted postoperative parameters to check if VCD is sufficient for the correction

A 36-year-old patient with Pott’s deformity. The patient’s main complaints were increasing neurological deficit and cosmetic issues. Pre-operative radiographs (a), CT (b) and MRI (c) show that the apex of kyphosis is located at T6-T9, The Konstam’s angle was 101° and the TK was 77°. The simulation of VCD osteotomy in Surgimap (d). The Konstam’s angle was corrected to 29° and the TK was 28° immediately after the surgery (e, f). 28 months follow-up X-ray (g) and CT (h) scan show a solid fusion

A 38-year-old man with Kyphotic deformity secondary to spinal Tuberculosis suffers from severe back pain and numbness in the left lower extremity. Pre-operative radiographs (a, b) and MRI (c) show that the apex of kyphosis is located at L3. L4, The Konstam’s angle was 72°, PI-LL: 82°, PT: 42°, The simulation of VCD osteotomy in Surgimap (d). The kyphosis was corrected to only 11° immediately after the surgery,PI-LL: 8°, PT: 18° (e, f, g). Three-dimensional reconstruction demonstrated that solid fusion of resection site was achieved 3.5 years postoperatively (f)