Objective To review the research progress of the risk factors for slip progression and the pathogenesis of lumbosacral spondylolisthesis, and to discuss the value of Spinal Deformity Study Group (SDSG) classification system for lumbosacral spondylolisthesis. Methods Recent articles about the risk factors for slip progression and the pathogenesis of lumbosacral spondylolisthesis were reviewed and comprehensively analyzed with SDSG classification system of lumbosacral spondylolisthesis. Results Pelvic incidence (PI) is the key pathogenic factor of lumbosacral spondylolisthesis. The Meyerding grade of slip, PI, sacro-pelvic balance, and spino-pelvic balance not only are the fundamental risk factors of slip progression, but also are the key factors to determine how to treat and influence the prognosis. Therefore, compared with Wiltse, Marchetti-Bartolozzi, and Mac-Thiong-Labelle classification systems of lumbosacral spondylolisthesis, SDSG classification based on these factors mentioned above, has better homogeneity between the subjects of subgroup, and better reliability, moreover, could better guide operative plan and judge the prognosis. Conclusion It is suggested that the SDSG classification system should be the standard classification for lumbosacral spondylolisthesis for the clinical and research work.
Objective To summarize the injury characteristics of the whole hand degloving injury and to explore its classification and treatment. Methods Between December 1999 and May 2010, 41 cases of the whole hand degloving injury were admitted for treatment. There were 28 males and 13 females with an average age of 35 years (range, 18-58 years). The causesof injury included mangled injury in 28 cases and crush injury in 13 cases. The interval between injury and surgery was 1-10 hours (mean, 3 hours). According to self-made classification standard for whole hand degloving injury, 11 cases were rated as type I, 5 cases as type II, 4 cases as type III, 8 cases as type IV, and 13 cases as type V. Type I injury was treated by replantation surgery with vascular anastomosis, type II by reconstruction with thumb flap and the second toe containing dorsal skin flap, type III by reconstruction with the second toe containing dorsal skin flap of both feet, type IV by replantation surgery with vascular anastomosis, and type V by reconstruction with thumb flap containing dorsal skin flap (8 cases) or repairing with abdominal flap (5 cases). The size of the dorsal flap was between 9 cm × 6 cm and 17 cm × 11 cm and the dorsal donor site was covered with free skin grafting. Results After surgery, partial necrosis occurred at fingers in 6 patients with type I injury, and at fingers and palm skin in 6 patients with type IV injury; the flaps, the reconstructed fingers, and replanted skin all survived in the others. The grafted skin at donor sites successfully healed. Forty cases were followed up from 6 months to 7 years (mean, 14 months). The skin color and texture were close to normal hand in the cases undergoing replantation, who had the best function restoration with S2-S4 sensory recovery; the hand function was basically restored with S2-S3 sensory recovery in the cases undergoing finger reconstruction with thumb and toe flaps; and the restoration of the hand function was not satisfactory with S1-S2 sensory recovery in the cases undergoing abdominal flaps. Conclusion Whole hand degloving injury can be classified into different types according to injury degree and this will help choose the cl inical treatment plan. The appropriate treatment based on these types can obtain better cl inical effectiveness.