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Biomedical subjects

L Boccanera

Publications and source records attributed to L Boccanera.

At least 19 recordsLinked to original sources

Osteosynthesis of the cervical spine with an anterior plate.

Osteosynthesis of the cervical spine with an anterior plate is indicated for reconstruction by a bone graft after somatectomy and in anterior fusion for unstable lesions such as fracture dislocations and fractures with severe deformity. In these situations traditional surgery with intersomatic wedged bone grafts may be insufficient and posterior surgery inadequate or risky. The authors report 11 cases of anterior osteosynthesis with a Louis plate, all of which were sufficiently stable to allow early mobilisation and minimal external orthosis. Fusion of the grafts occurred in all cases at long-term follow-up. The method involves a potential risk to the esophagus, which is in close contact with the plate. It must therefore be limited to cases in which the advantages outweigh the risks. The indications, technique, complications and results are discussed.

Adult

Traumatic cervical radicular lesions.

Isolated traumatic cervical radicular lesions are rare. They constitute only 3% of the neurological lesions due to spinal trauma. A monolateral radicular lesion (Type A) is occasionally associated with medullary damage (Type B), resulting in a more complex neurological syndrome. Type A lesions are caused by flexion/rotation with fracture of the upper part of an articular facet and rotatory dislocation of the vertebra above, or by a pure monolateral dislocation. Reduction by halo traction followed by halo plaster gives good results even when the anatomical result is imperfect. Operative treatment of these lesions is required only in cases which cannot be reduced nonsurgically. Type B myelo-radicular lesions are caused by hyperextension-rotation injuries with displaced fractures of the facets and secondary subluxation. The treatment is surgical; reduction by a posterior approach with fixation by Roy-Camille plates, but must include radicular release by removal of the fractured joint mass.

Adolescent

Stenosis of the lumbar vertebral canal (a study of 25 cases operated on).

A study is presented of 25 cases of stenosis of the lumbar vertebral canal treated surgically by bilateral laminectomy at each affected level. The clinical and radiographic features are described, also the operative technique. Good results were obtained in 84% of the cases followed up for an average period of 3 years.

Aged

Multiple operations on the lumbar spine. A study of 15 patients operated on 3 times or more for an initial diagnosis of prolapsed disc.

This is a study of 15 patients who have been operated on three or four times after an initial diagnosis of prolapsed lumbar disc. Four main causes have been distinguished; recurrent prolapse, spinal stenosis, arachnoiditis and vertebral instability. The final results of these multiple operations have been assessed as worthwhile in 73% of cases. Several factors in this case material have been identified as important in determining the satisfactory end results.

Adult

Surgical treatment of isthmic spondylolisthesis in adults. Review of 44 cases with long-term control.

The results are presented of 44 cases of isthmic spondylolisthesis in adults treated surgically. The Authors consider three groups treated by: A) surgery to free the nerve roots, B) posterior fusion with or without freeing of the nerve roots, C) posteriorlateral fusion. After an analysis of the techniques at present in use for the treatment of spondylolisthesis, the Authors conclude that, in adults, posteriorlateral fusion produces a high percentage of successes with low risk.

Adult

Chemonucleolysis: advantages and disadvantages.

The authors report their experience with 60 patients treated for lumbar disc herniation by chemonucleolysis with chymopapain and followed-up 1 to 3 years after treatment. Long-term results were as follows: excellent: 50%; good: 40%; fair: 8.2%; poor: 1.8%. The high percentage of positive results is attributed to the rigid criteria for patient selection used, which resulted in treatment by chemonucleolysis in only 18.6% of the surgical cases of lumbar disc pathology observed. 27.2% of the patients treated complained of disorders which resulted in postoperative complications and/or prolonged convalescence: prolonged low back pain and vertebral stiffness in 20%, persistent contralateral sciatic pain in 5.4%; intense but transitory worsening of the sciatica in 1.8%. The most feared complication of chemonucleolysis is paraplegia occurring after the inadverted injection of the enzyme into the spinal fluid. This risk overshadows the positive attributes of the method. The most important advantage of chemonucleolysis, as compared with surgery, is that it avoids epidural scarring and permanent postoperative anatomical changes. Patients may benefit from these advantages, but they must be willing to accept the negative aspects of the method, as well.

Adolescent