INTRODUCTION: Flat-back syndrome is one of the main causes of surgical failure after lumbar fusion and can lead to a revision surgery to correct it. Three-column pedicle subtraction osteotomy is an efficient technique to restore lumbar lordosis (LL) for fixed sagittal malalignment. The fusion mass stemming from the past surgeries makes the procedure demanding as most anatomical landmarks are missing. MATERIAL AND METHODS: This review article will focus on the correction of this lack of LL through the fusion mass. We will successively review the preoperative management, the surgical specificities, and various types of clinical cases that can be encountered in flat-back syndromes. CONCLUSION: PSO in the fixed fusion mass is technically demanding. Preoperative CT-scan and preoperative navigation allow us to push the limits when anatomical landmarks disappear. Bleeding and neurologic are the two major complications feared by the surgeon. The best way to avoid these revision surgeries is to restore a proper lumbar lordosis at the time of initial surgery by considering lumbo-pelvic indexes.
INTRODUCTION:Flat-back syndrome is one of the main causes of surgical failure after lumbar fusion and can lead to a revision surgery to correct it. Three-column pedicle subtraction osteotomy is an efficient technique to restore lumbar lordosis (LL) for fixed sagittal malalignment. The fusion mass stemming from the past surgeries makes the procedure demanding as most anatomical landmarks are missing. MATERIAL AND METHODS: This review article will focus on the correction of this lack of LL through the fusion mass. We will successively review the preoperative management, the surgical specificities, and various types of clinical cases that can be encountered in flat-back syndromes. CONCLUSION: PSO in the fixed fusion mass is technically demanding. Preoperative CT-scan and preoperative navigation allow us to push the limits when anatomical landmarks disappear. Bleeding and neurologic are the two major complications feared by the surgeon. The best way to avoid these revision surgeries is to restore a proper lumbar lordosis at the time of initial surgery by considering lumbo-pelvic indexes.
Authors: Joshua D Auerbach; Lawrence G Lenke; Keith H Bridwell; Jennifer K Sehn; Andrew H Milby; David Bumpass; Charles H Crawford; Brian A OʼShaughnessy; Jacob M Buchowski; Michael S Chang; Lukas P Zebala; Brenda A Sides Journal: Spine (Phila Pa 1976) Date: 2012-06-15 Impact factor: 3.468
Authors: J Y Lazennec; S Ramaré; N Arafati; C G Laudet; M Gorin; B Roger; S Hansen; G Saillant; L Maurs; R Trabelsi Journal: Eur Spine J Date: 2000-02 Impact factor: 3.134
Authors: Yongjung J Kim; Keith H Bridwell; Lawrence G Lenke; Gene Cheh; Christine Baldus Journal: Spine (Phila Pa 1976) Date: 2007-09-15 Impact factor: 3.468