Differences in clinical trial patient attributes and outcomes according to enrollment setting.

Purpose: During the last 25 years, National Cancer Institute (NCI) cooperative trial groups have extended trial networks from academic centers to include certain community and Veterans Health Administration (VHA) centers. We compared trial patients' attributes and outcomes by these enrollment settings.

Patients And Methods: Studying 2,708 patients on one of 10 cooperative group, randomized lung trials at 272 institutions, we compared patient attributes by enrollment setting (ie, academic, community, and VHA affiliates).

Ultrasound-guided facet joint injections in the middle to lower cervical spine: a CT-controlled sonoanatomic study.

Objectives: The aim of this study was to investigate the efficacy of ultrasound as a guiding tool for simulated cervical facet joint injections in cadavers.

Methods: A total of 40 ultrasound examinations at 5 levels (C6-7 to C2-3) were performed on 4 embalmed cadavers. The zygapophyseal joints were located with ultrasound.

Pathologic-sonographic correlation in temporomandibular joint pathology.

The accuracy of high-resolution ultrasonography (HR-US) in detecting disk displacement and condylar erosion of the temporomandibular joint (TMJ) was evaluated, using corresponding cryosections as a "gold standard". HR-US of the TMJ was performed with a high frequency 12 MHz transducer on 30 preserved autopsy specimens. Succeeding sonography, the autopsy specimens were deep-frozen and cut in paracoronal planes corresponding to the sonographic images.

Ultrasound guidance for facet joint injections in the lumbar spine: a computed tomography-controlled feasibility study.

Unlabelled: We conducted this study to develop an ultrasound-guided approach for facet joint injections of the lumbar spine. Five zygapophyseal joints (L1-S1) on each side of 5 embalmed cadavers were examined by ultrasound for a total of 50 examinations. The joint space was demonstrated under ultrasound guidance.

Ultrasound-guided periradicular injections in the middle to lower cervical spine: an imaging study of a new approach.

Background And Objectives: The objective of this study was to show the efficacy of ultrasound in facilitating the performance of a simulated cervical periradicular injection in cadavers.

Methods: A total of 40 ultrasound-guided examinations at 4 levels (C3 to C7) were performed on 4 embalmed cadavers. The cervical spinal nerves were located with ultrasound.

Real-time sonographic imaging for periradicular injections in the lumbar spine: a sonographic anatomic study of a new technique.

Objective: We conducted this study to develop a sonographically guided approach to the spinal nerve of the lumbar spine and to assess its feasibility and accuracy by means of computed tomography (CT).

Methods: Fifty sonographically guided approaches at 5 levels (L1-S1) were performed on 5 embalmed cadavers, which were positioned prone. The spinal nerves of the lumbar spine were shown under sonographic guidance.

Area enlargement of the gracilis muscle flap through microscopically aided intramuscular dissection: ideas and innovations.

The gracilis muscle is one of the most extensively used muscles for free tissue transplantation. Its advantages are low donor-site morbidity with a concealed donor scar, a constant anatomy with large-diameter vessels, and the potential for a neurosensory flap as well as a large skin paddle. However, limitations comprise its limited size, and thus the muscle is limited to small-to-medium-sized defects.

Isolated compression of the pectoral nerve resulting in atrophy of the major pectoral muscle.

We report on two cases of isolated damage to a muscle branch of the lateral pectoral nerve. Diagnosis was established by the clinical presentation and electromyographic examination. In the few reported cases of such injuries, the cause was trauma to this region.

Intrapelvic complications after total hip arthroplasty failure.

Background: Severe total hip arthroplasty failure with central migration of prosthetic components is uncommon. If perforation of the medial acetabular wall occurs, injuries of intrapelvic structures may result.

Data Sources: A meta-analysis of the English literature was performed.