Biomedical subjects
C Villas
Publications and source records attributed to C Villas.
Digital nerves. A qualitative and quantitative ultrastructural study in man.
Explore the source record for details and available documents.
Vascular peculiarities of digital nerves in man.
Explore the source record for details and available documents.
[Synovial cyst in the lumbar facet joint. A rare cause of lumbar-sciatic pain].
Synovial cysts of the facet joints are uncommon lesions which may be asymptomatic or present as low back pain, with or without radicular symptoms. They are considered to be secondary to trauma or degenerative joint disease, and they occur more frequently in patients with spondylolisthesis. Diagnosis is normally achieved with computed tomography or magnetic resonance, which show a cystic lesion located laterally adjacent to the facet joint. We review the literature and report a patient who presented with first sacral nerve root symptoms attributable to a ganglion cyst of the left L5 S1 facet joint. Treatment was curative and consisted in excision of the cyst.
[Use of bone allografts in the surgical repair of tibial plateau fractures].
The number of indications of the allografts is increasing in bone and joint pathology treatment. With this good alternative, it is possible to avoid the morbidity sometimes observed in patients in which autograft is used. We present 6 cases of fractures of the external tibial plateau type B3 (AO classification) treated using bone allograft (a piece of femoral head) as a support of the tibial plateau after to get a proper reduction of the fractures. In all the cases we got good results in the support function of the allograft as in consolidation, with no complication.
[Allografts in extensive spinal arthrodesis].
Surgery of spinal deformities and vertebral tumors often requires extensive arthrodesis, with the difficulty of obtaining sufficient autogenous bone graft (particularly in children and cases of paralytic deformities) and the necessity of a second incision, thus lengthening the operation and eventual increase of the morbidity. We present 52 patients who suffered from vertebral tumours, fractures or spinal deformities and underwent spinal arthrodesis surgery. Femoral head allografts were used as cancellous bone graft to add to the amount obtained from the arthrodesis bed itself (posterior structures). In three occasions, femoral head grafts shaped as a strut were also used as intersomatic bone graft, being implanted via a costotansversectomy. The only complication was the appearance of seromas of spontaneous resorption in the first 15 cases (thereafter repeated cleaning of the bone graft avoided this problem). In our experience, bone grafts facilitate the carrying out of shorter surgical operations but can also avoid having to recourse the further incisions without reducing the possibility of obtaining a successful arthrodesis.