[Enamines. XVI. On the structure of acetylated cyclohexanon-enamine].
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Cyclohexanes↗
Biomedical subjects
G Opitz
Publications and source records attributed to G Opitz.
[10-year results following surgery of idiopathic scoliosis using the Harrington technique (work by the "Conference of German-language Spinal Surgeons)].
From 1972 through 1976 90 patients with idiopathic scoliosis underwent posterior spine fusion using Harrington instrumentation. Follow up was 10 years or more with an average of 12 years. The most frequent and most serious complications occurred in adults with scoliotic deformities of more than 90 degrees. Vital capacity of adults improved more than 20 percent. In young patients with low grade scoliotic spines a better immediate postoperative correction was achieved. There was also a higher loss of correction later on in this group. Thus in the long term follow up there was no correlation between magnitude of the preoperative curve and postoperative correction.
Adolescent↗
[A 10-year follow-up of the Harrington operation in congenital scoliosis and scoliosis due to poliomyelitis and neurofibromatosis].
From 1972 through 1976 40 patients with congenital scoliosis, scoliosis in neurofibromatosis and scoliosis following poliomyelitis underwent posterior spine fusion using Harrington instrumentation. Follow up was 10 years or more with an average of 12 years. 63 percent of all patients showed a curve of more than 90 degrees before operation. The different types of scolioses revealed characteristical results according to their etiology during long time follow up. Concerning long time reduction of curve the best results were obtained in patients following poliomyelitis. Patients with congenital and neurofibromatous scoliosis showed loss of correction 2 and 5 years postoperatively.
Adolescent↗
[Surgical treatment of primary and secondary malignant tumors of the thoracic and lumbar spine].
After considering conservative therapeutic measures, the authors opt for surgical treatment of primary or secondary spinal tumors if neurologic deficits occur or the structural stability of the spine is at risk. The majority of the tumors are located in the ventral section of the spine, i.e., in the vertebral body, and therefore the present authors mainly perform ventral tumor resection and spinal reconstruction (traction implant plus bone cement and ventral traction bracing with the DKS system). In cases with tumor spread over several segments and/or lumbosacral involvement the authors recommend combined ventral and dorsal procedures in order to achieve adequate stability of the vertebral body prosthesis.
Bone Cements↗