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Biomedical subjects

Marcelo Bordalo-Rodrigues

Publications and source records attributed to Marcelo Bordalo-Rodrigues.

7 recordsLinked to original sources
PubMed2006

Ultrasound in adhesive capsulitis of the shoulder: is assessment of the coracohumeral ligament a valuable diagnostic tool?

OBJECTIVE: To determine the accessibility of the coracohumeral ligament (CHL) by ultrasound (US) and to determine CHL thickness in adhesive capsulitis of the shoulder. DESIGN AND PATIENTS: US examinations were carried out in 498 consecutive shoulders of 306 individuals (194 women and 112 men), mean age 47.4 years (range 15-92 years), in order to identify and measure the maximum thickness of the CHL. The patients were divided into three study groups: asymptomatic shoulders (n=121), painful shoulders (n=360) and shoulders with arthrographic evidence of adhesive capsulitis (n=17). The mean maximal thickness of CHL was compared among the 3 study groups (non-parametric test of Kruskal-Wallis, p<0.05). RESULTS: The CHL was visualized in 92 out of 121 shoulders in the asymptomatic group (76.0%), in 227 out of 360 shoulders in the painful shoulder group (63.0%), and in 15 out of 17 shoulders in the adhesive capsulitis group (88.2%). The average thickness of the CHL was significantly greater in adhesive capsulitis (3 mm) than in the asymptomatic (1.34 mm) and painful (1.39 mm) shoulders. No significant difference was found between asymptomatic and painful shoulders. CONCLUSION: CHL depiction can be achieved in a reasonable proportion of shoulders. A thickened CHL is suggestive of adhesive capsulitis. More studies are needed for clinical validation of these data.

Adolescent↗
PubMed2005

MR imaging of the proximal rectus femoris musculotendinous unit.

MR imaging is a useful modality for diagnosing and grading proximal rectus femoris injuries.MR imaging is also valuable in predicting the length of recovery and rehabilitation time of musculotendinous strains and in presurgical planning when resection of a chronic hematoma, deep scar tissue, or a pseudocyst is contemplated.

Athletic Injuries↗
PubMed2005

Reactive carpal synovitis: initial experience with MR imaging.

PURPOSE: To retrospectively evaluate the accuracy of various magnetic resonance (MR) imaging findings in the diagnosis of reactive carpal synovitis. MATERIALS AND METHODS: Institutional review board approval was obtained, and the need for informed consent was waived. This study was compliant with the Health Insurance Portability and Accountability Act. Thirty-five consecutive patients (19 male and 16 female patients; age range, 13-57 years) who underwent arthroscopy and MR imaging within 4 weeks of surgery were evaluated by two reviewers for the following potential findings of synovitis: (a) distention of the pisotriquetral recess by fluid, (b) distention of the radial and/or prestyloid recess, (c) synovial enhancement (in patients who received contrast material), (d) amount of dorsal capsule distention, and (e) the location of bone marrow edema, if any. The chi2 and paired t tests were used to assess these findings in patients with and patients without arthroscopically proved synovitis. The sensitivity, specificity, positive and negative predictive values, and accuracy of these findings in the detection of synovitis were calculated. RESULTS: Fluid in the pisotriquetral recess was seen in nine of the 14 patients with synovitis and five of the 21 patients without synovitis (P = .018). Distention of the radial and/or prestyloid recess was observed in six of the 14 patients with synovitis and two of the 21 patients without synovitis (P = .027). Among the 24 patients who received contrast material, synovial enhancement was seen in seven of eight patients with synovitis and three of 16 patients without synovitis (P = .002). The dorsal capsule measured 1-7 mm (mean, 3.07 mm) in the 14 patients with synovitis and 2-7 mm (mean, 3.76 mm) in the 21 patients without synovitis (P = .193). Although bone marrow edema was seen globally in similar frequencies (nine of 14 patients with synovitis, nine of 21 patients without synovitis), pisotriquetral bone marrow edema was seen only in patients with synovitis (two of nine patients). CONCLUSION: Fluid in the pisotriquetral recess, enhancing synovium, and, less commonly, pisotriquetral bone marrow edema are MR imaging findings that may help in the diagnosis of reactive carpal synovitis.

Adolescent↗
PubMed2005

Lunate chondromalacia: evaluation of routine MRI sequences.

OBJECTIVE: Chondromalacia is a commonly encountered abnormality at arthroscopy and may be responsible for significant clinical symptoms and disability. In the wrist, the most common location for chondromalacia is the lunate bone. Consequently, we sought to study the accuracy of clinical MRI in the assessment of lunate articular cartilage. MATERIALS AND METHODS: MR images of 34 patients who underwent arthroscopy and had an MRI examination within 1 month of surgery were evaluated by two reviewers for the presence and location of lunate cartilage defects and subchondral edema. RESULTS: Lunate cartilage defects were seen on MRI in 10 of the 13 patients with chondromalacia, but these defects were also incorrectly noted in three of 21 of patients without chondromalacia. The visible locations for cartilage defects were the ulnar aspect of the proximal lunate bone (n = 3), radial aspect of the proximal lunate bone (n = 4), ulnar aspect of the distal lunate bone (n = 2), and radial aspect of the distal lunate bone (n = 1). Subchondral marrow edema was observed in six of the 10 patients with chondromalacia seen on MRI; in all six patients, the edema was seen in the same quadrant as the cartilage defect. Marrow edema was detected in one patient without chondromalacia. CONCLUSION: We conclude that lunate chondromalacia can be accurately assessed using routine MRI sequences, although there are occasional false-positive interpretations.

Adolescent↗
PubMed2004

MR imaging of entrapment neuropathies at the elbow.

MR imaging has a valuable role in the evaluation of compressive neuropathies at the elbow. Specific MR signs in association with clinical findings can supply an accurate diagnosis. A review of normal anatomy, clinical features, and MR assessment of nerve entrapment syndromes at the elbow is presented.

Cubital Tunnel Syndrome↗
PubMed2004

MR imaging of common entrapment neuropathies at the wrist.

MR imaging is a useful technique in the work-up of compressive neuropathies at the wrist, providing fine anatomical detail and excellent diagnostic accuracy. MR imaging, however, should be reserved for those cases in which the clinical and electrodiagnostic findings are inconclusive, the symptoms are unusually severe, or when a tumor is suspected. This article reviews the normal anatomy and the MR imaging features of the most common compressive neuropathies at the wrist: carpal and ulnar tunnel syndromes.

Carpal Tunnel Syndrome↗