Biomedical subjects

N Chemla

Publications and source records attributed to N Chemla.

3 recordsLinked to original sources

PubMed1995

C1-2 arthrography.

OBJECTIVE: To describe the technique of C1-2 arthrography and recommend it as a suitable treatment for pain due to C1-2 abnormalities. MATERIALS AND METHODS: One hundred patients with the following conditions were studied: cervical pain or neuralgia without radiographic changes (group 1, n = 23), osteoarthritis (group 2, n = 37), rheumatoid arthritis (group 3, n = 23), ankylosing spondylarthritis (group 4, n = 5) and diverse conditions (group 5, n = 12). The technique consists of lateral puncture of the posterior aspect of the C1-2 joint with a 20-gauge needle under fluoroscopic control, arthrography using 1 ml contrast medium, and a 1-ml long-acting steroid injection subsequently. RESULTS: The articular cavity has an anterior and a posterior recess. Sometimes the posterior recess is large. In 18% of cases the contralateral joint also opacifies. CONCLUSIONS: C1-2 arthrography appears to be an efficient and safe technique for the treatment of upper cervical pain due to C1-2 articular disorders.

Adolescent↗

PubMed1994

[Value and results of radioguided deep spinal biopsy].

MATERIAL AND METHODS. 76 percutaneous vertebral biopsies were performed with fluoroscopic guidance at the Radiology B Service, Hôpital Cochin in Paris, from November 1991 to March 1994. There were 12 cervical, 23 thoracic, 45 lumbar and sacral biopsies. There were 71 patients (28 women and 43 men), aged 22 to 88 years old (mean age 55.9). The needle used was either a trophine needle (Mazabraud) or a cutting needle (Surcut) or both. We have been doing vertebral percutaneous biopsies for 20 years in our radiology Service, and we published a review of 100 cases in 1983. The aim of this second review is to actualize the technique and the results. RESULTS. An accurate diagnosis was made in 80% of all cases. Diagnosis were: malignancy (34 cases), infection (21 cases), benign compression fracture (10 cases), miscellaneous (11 cases). There were two complications, one at the cervical spine (aggravation of a cervical cord compression) and one at the thoracic spine (pneumothorax). CONCLUSION. Percutaneous vertebral biopsy under fluoroscopic guidance is a safe and reliable method of obtaining a diagnosis in different spine lesions, avoiding thus, in most cases, a surgical procedure.

Adult↗

PubMed1994

[MRI of the knee. Value of delayed sequences after intravenous injection of gadolinium].

A prospective study of delayed sequences after intravenous injection of gadolinium for knee MRI shows the similar results as from the literature: enhancement of synovial fluid after 30 minutes. Sixteen patients were studied mainly with gradient echo. This phenomenon improves the visualisation of the intraarticular structures like meniscus, cruciate ligaments, or cartilage. This study leads to use this technique in case of difficulties like postoperative intraarticular lesions.

Cartilage, Articular↗