Purpose: We have already dealt with the technical and anatomical basics for thecaloscopy. The first results of clinical application are presented and the indications for its diagnostic and therapeutic use are described. The aetiology of aseptic arachnitis and the term "Wide spinal canal syndrome" are discussed.
Patients and methods: Twelve patients who fulfilled the criteria for entry to the study were selected and the criteria were chosen according to German medical and legal rules. All patients underwent an endoscopic inspection and, if necessary, therapeutic manipulation under general anaesthesia.
Results: In all cases the procedure was safely and successfully performed. The pathomorphology of the arachnoid was detected and endoscopically treated in almost all cases. Arachnoid cysts were successfully fenestrated and an intraspinal meningocoele treated with endoscopic assistance.
Conclusion: Thecaloscopy is a safe procedure if skilfully performed. It provides an opening for a wide range of new diagnostic and therapeutic options.