title: One-Year Prospective Evaluation of the Technique of Percutaneous Cortical Bone Trajectory Spondylodesis in Comparison with Percutaneous Pedicle Screw Fixation: A Preliminary Report with Technical Note.
abstract: Background and ObjectiveCortical bone trajectory (CBT) spondylodesis is a novel screw fixation method in which screws are inserted through the pedicle in a caudal-medial to cephalad-lateral direction, providing a similar or more rigid spinal fixation compared with traditional pedicle screws. However, the traditional CBT technique requires invasive detaching and opening of the paraspinal muscle. In a small clinical prospective study we introduced a percutaneous CBT fixation technique by modifying the percutaneous pedicle screw (PPS) technique and evaluated the short-term outcome.Materials and MethodsWe enrolled 40 patients with lower back pain (LBP) and limb r;adicular pain with a diagnosis of spondylolisthesis who underwent transforaminal lumbar interbody fusion surgery. The patients were divided into two groups according to screw trajectory: the percutaneous CBT (pCBT) and the traditional PPS arms (20 patients in each). A consecutive group of 20 patients underwent traditional PPS, and the other underwent pCBT; dorsal spondylodesis was combined with transforaminal lumbar interbody fusion (TLIF) in both groups. Perioperative data such as operative time, blood loss, duration of fluoroscopy, and total incision length were investigated. Postoperative outcomes were evaluated using the visual analog scale (VAS) for LBP and leg pain at baseline, 1, 6, and 12 months. Apvalue < 0.05 was considered statistically significant.ResultsWe observed no significant disadvantages in pCBT patients in perioperative and postoperative data compared with the PPS group. There were no complications. The pCBT patients showed a significantly shorter total incision length (p< 0.01) with a significantly shorter duration of fluoroscopy (p< 0.05). The postoperative VAS score was significantly improved in the pCBT group, especially 6 months after the surgery (p< 0.05).ConclusionThe pCBT spondylodesis provided an outcome comparable with PPS fixation with a tendency for improvement 1 year postsurgery. This technique can be used in appropriate cases, combined with lumbar interbody fusion.
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Sumihisa
authors.initials: S
authors.lastname: Orita
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Kazuhide
authors.initials: K
authors.lastname: Inage
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Go
authors.initials: G
authors.lastname: Kubota
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Sainoh
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Jun
authors.initials: J
authors.lastname: Sato
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Kazuki
authors.initials: K
authors.lastname: Fujimoto
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Shiga
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Junichi
authors.initials: J
authors.lastname: Nakamura
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Matsuura
authors.affiliation: Department of Orthopaedic Surgery, Shimoshizu Hospital, Yotsukaido, Japan.
authors.forename: Yawara
authors.initials: Y
authors.lastname: Eguchi
authors.affiliation: Department of Orthopaedic Surgery, East Chiba Medical Center, Togane, Japan.
authors.forename: Yasuchika
authors.initials: Y
authors.lastname: Aoki
authors.affiliation: Department of Orthopaedic Surgery, Teikyo University Mizonokuchi Hospital, Kawasaki, Japan.
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Toyone
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Kazuyo
authors.initials: K
authors.lastname: Yamauchi
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Sakuma
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Oikawa
authors.affiliation: Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.
authors.forename: Takane
authors.initials: T
authors.lastname: Suzuki
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Takahashi
authors.affiliation: Department of Orthopaedic Surgery, The Back Pain Spine Surgery Melbourne Florida, Melbourne, Florida, United States.
authors.forename: Richard A
authors.initials: RA
authors.lastname: Hynes
authors.affiliation: Department of Orthopedic Surgery, Chiba University, Inohana Chuo-ku, Chiba, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Ohtori
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000601:surgery*; D017116:Low Back Pain / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D065289:Pedicle Screws; D011446:Prospective Studies; D013123:Spinal Fusion / Q000379:methods*; D013168:Spondylolisthesis / Q000601:surgery*; D016896:Treatment Outcome