Spondylolysis and Spondylolisthesis in the Goto Islands (The Second Report):un-treated lumbar vertebral instability

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The object of this paper is to show the result of clinical and mainly radiographic examination on un-treated about 50 patients with spondylolysis and spondylolisthesis who have had long history of several years (average 7-10 years) of chronic low back pain.The following resulte were obtained.1. Onset (complaining of low back pain)Spondylolysis (Group I); at the age of 30 years (average)Spondylolytic Spondylolisthesis, (Group II); at the age of 40 years. (average)Degenerative Spondylisthesis, (Group III); at the age of 47.8 years. (average)2. Anterior displacement of L4 vertebra on L5;Average extension-flexion motion of L4 had expressed the maximum movement in Group III, while it has done the minimum movement in Group II.3. The degree of anterior-posterior sliding in Group II is more than Group III.4. In 9 cases (64%) of Group I, anterior-posterior sliding over than 3mm has been found by functional radiographic lateral view. It is suggested that these sliding might be one factor of the indications for operation about Group I (Spondylolysis).
西日本整形・災害外科学会の論文