The clinical analyse on development of isthmic spondylolisthesis in adults

Objective:To study the development of isthmic spondylolisthesis in adults and search the cause.Method:Forty-two patients who had spondylolysis and spondylolisthesis were followed-up.There were 30 males and 12 females.All patients were taken radiographs for lumbar discomfort or low back pain.Spondylolysis and spondylolisthesis were discovered.According to Meyerding slip degree,13 cases were spondylolysis,29 cases were noninter-vention.Result:All the patients were followed-up for 2~7 years,with an average of 4.3 years.Lumbar vertebra slippage increased in 15 patients.The increasing slippage were 9%~30%(average 14.6%).According to Boxall definition of development of spondylolisthesis;11 cases were found the development of spondylolisthesis.The height of intervertebral disk decreased about 10%~90% (average 42%)in the level of spondylolysis.Conclusion:There is development of spondylolysis and spondylolisthesis in adults,that may be correlative to the disc degeneration.