title: The reduction and direct repair of isthmic spondylolisthesis using the smiley face rod method in adolescent athlete: Technical note.
abstract: Presently, lumbar spondylolisthesis did not have the indication of direct repair surgery because of the difficulty to reduce the slippage. In this report, we presented a case and described a minimally invasive direct repair surgery to reduce and repair the pars interarticularis defects of lumbar spondylolisthesis. First, curettage and removal of the synovium of the pars interarticularis and decompression of nerve root are conducted. Next, cancellous bone is harvested from the iliac crest. And then the Percutaneous Pedicle Screws are inserted bilaterally. A rod is bended and placed just caudal to the spinous process. We can make reposition of slipped vertebra and stabilize the loose lamina more firmly using a reduction tool and a rod pusher. Finally, bone grafts are implanted onto the pars defects. The Smiley face rod method is very useful to reduce the slippage and repair the pars defects in the lumbar spondylolisthesis especially in adolescent athletes. J. Med. Invest. 64: 168-172, February, 2017.
authors.affiliation: Department of Orthopedics, Institute of Health Biosciences, the University of Tokushima Graduate School.
authors.forename: Kazuta
authors.initials: K
authors.lastname: Yamashita
authors.forename: Kosaku
authors.initials: K
authors.lastname: Higashino
authors.forename: Toshinori
authors.initials: T
authors.lastname: Sakai
authors.forename: Yoichiro
authors.initials: Y
authors.lastname: Takata
authors.forename: Fumio
authors.initials: F
authors.lastname: Hayashi
authors.forename: Fumitake
authors.initials: F
authors.lastname: Tezuka
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Morimoto
authors.forename: Akihiro
authors.initials: A
authors.lastname: Nagamachi
authors.forename: Koichi
authors.initials: K
authors.lastname: Sairyo
mesh_terms: D000293:Adolescent; D001484:Baseball / Q000293:injuries; D001858:Bone Nails; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D019060:Minimally Invasive Surgical Procedures; D019637:Orthopedic Procedures; D065289:Pedicle Screws; D013168:Spondylolisthesis / Q000000981:diagnostic imaging / Q000601:surgery*