Search PubMed⌕ Search

Biomedical subjects

J Guerra

Publications and source records attributed to J Guerra.

At least 91 records · Page 5Linked to original sources
PubMed1978

The adult hip: an anatomic study. Part I: the bony landmarks.

A comprehensive anatomic, pathologic and radiographic study of the adult hip was undertaken to define bony landmarks which, when altered, are reliable indicators of disease. Methodology included radiography of cadaveric specimens and analysis of over 300 anteroposterior (AP) radiographs of "normal" adult hips. This information was applied to clinical situations with the following conclusions: (a) The diagnosis of protrusio acetabuli is warranted if the acetabular line projects medial to the ilioischial line by 3 mm or more in men and by 6 mm or more in women. (b) In acetabular trauma, an AP and two oblique radiographs (30 degrees anterior oblique and 30--45 degrees posterior oblique) are required for complete evaluation. (c) Characteristic alterations in the joint space allow accurate diagnosis of disease.

Adult↗
PubMed1978

The adult hip: an anatomic study. Part II: the soft-tissue landmarks.

A comprehensive anatomic, pathologic, and radiographic study was undertaken to define reliable soft-tissue landmarks about the hip. Methodology included an analysis of 300 "normal" adult hip radiographs, tissue maceration, cadaveric intra-articular injection studies and review of selected clinical cases. Results, when applied to clinical situations, indicate: (a) The iliopsoas and "capsular" fat planes are poor indicators of small to moderate amounts of intra-articular fluid in the adult. (b) The "capsular" fat plane is not associated with the joint capsule, but in fact is a fat plane between two muscle bundles anterior to the articulation. (c) Distinct soft-tissue planes are available for dissemination of fluid from the hip joint. These include the iliopsoas bursa, which may distend in association with articular disease, and the fat plane of the obturator externus muscle.

Hip↗
PubMed1978

Proximal tibiofibular joint: anatomic-pathologic-radiographic correlation.

An anatomic-pathologic-radiographic study of the proximal tibiofibular joint was undertaken. This synovial articulation between the proximal tibia and fibula may communicate with the knee joint in 10% of adults. Radiography of the normal proximal tibiofibular articulation outlines a consistent relationship between the proximal portions of the tibia and fibula. Disruption of this normal relationship is indicative of anterolateral or posteromedial subluxation or dislocation. Articular disorders of this joint include reheumatoid arthritis and septic arthritis. In the latter, initial alterations of the knee joint may subsequently extend to involve the proximal tibiofibular joint, illustrating the potential communication between these two articulations.

Arthritis, Rheumatoid↗
PubMed1978

Association of diffuse idiopathic skeletal hyperostosis (DISH) and calcification and ossification of the posterior longitudinal ligament.

Diffuse idiopathic skeletal hyperostosis (DISH) is a common ossifying diathesis in middle-aged and elderly patients characterized by bone proliferation along the anterior aspect of the spine and at extraspinal sites of ligament and tendon attachment to bone. Four patients with DISH revealed extensive calcification and ossification of the posterior longitudinal ligament in the cervical spine. Review of cervical spine radiographs in 74 additional patients with DISH demonstrated bony hyperostosis of the posterior aspect of the vertebrae in 41%, posterior spinal osteophytosis in 34%, and posterior longitudinal ligament calcification and ossification in 50%. These ligamentous findings, which have previously been described almost exclusively in Japanese people, appear to be an additional skeletal manifestation of DISH.

Aged↗
PubMed1977

[Pediatric intensive care (author's transl)].

In the Intensive Care Unit of our General Hospital, where an important obstetric-pediatric unit exists, 392 infants have been treated from August 1974 to 1976. Although the results of all age groups are shown, the neonatal one is specially considered. All those patients who recovered and were discharged from the hospital were called for revision and the results of those whom attended are shown. The convinience of the regionalisation and hierarchisation of these intensive care units and the necessity of adequately organise the communication and transport of these patients from the peripheral small units to the regional one, is emphasized.

Critical Care↗
PubMedDate not supplied

Molecular phylogeography of the moss Tortula muralis Hedw (Pottiaceae) based on chloroplast rps4 gene sequence data.

Tortula muralis is a moss species of cosmopolitan distribution, for which we present chloroplast rps4 sequence data. The sequences provided a sufficiently high degree of divergence ( h = 0.878, theta = 0.00989 +/- 0.0000106, a total of 18 haplotypes for 49 accessions) for the degree of differentiation between regions from different continents to be investigated. In fact, 18.53 % of the variation found corresponded to differences between these regions, while 81.43 % was attributed to intra-region differences. Only the Japanese area differed significantly from other regions. Some haplotypes are found on several continents, while others are restricted to certain areas. Six of the seven sequenced plants from Japan belong to a haplotype only found there. The phylogenetic analysis suggests that Tortula muralis might be paraphyletic, with Tortula vahliana nested within the Tortula muralis clade. At present, it is not clear whether gene flow between the different clades of Tortula muralis is a continuing process or whether Tortula muralis is an example of cryptic speciation.

Analysis of Variance↗
PubMedDate not supplied

Digital arthrography in the evaluation of painful joint prostheses.

Digital arthrography was accomplished in 16 patients who had painful prostheses. In each instance, resulting arthrographic abnormalities were compared with those apparent on subsequent overhead radiographs. Results indicate the potential value of the digital technique in this clinical setting. The examination is easy to perform and rapid, and allows the examiner to view the changing images in the subtraction mode. Image manipulation and enhancement are also possible.

Aged↗
PubMedDate not supplied

[Decanulation of tracheostomised children (author's transl)].

It is described eight tracheostomised patients, advising an early and gradual tracheal decanulation using silver tracheostomy tube with a window in the posterior curvature (fenestrated tube, Alder Hey pattern) and proper sedation at the moment of definitive decanulation. Decanulation techniques and the mechanical and functional difficulties that can occur and how to avoid them are described: Finally the tracheostomy tubes that have been used are mentioned.

Age Factors↗