The Association of Sacral Table Angle Measurements With Spondylolytic and Spondylolisthetic Defects at the Lumbosacral Articulation: A Radiographic Analysis.

Study Design: Retrospective radiographic study of 6 patients with L5 spondylolysis observed prospectively before the onset of lysis through adulthood. A radiographic analysis of 50 pediatric control subjects was compared with the study group.

Objective: To determine whether sacral table angle (STA) measurements bear etiologic association with the development of spondylolysis and/or subsequent spondylolisthesis.

Relationship between near infrared spectroscopy and intra-compartmental pressures.

Background: Near infrared spectroscopy (NIRS) has been suggested as a possible means for detecting perfusion deficits in patients with acute compartment syndrome (ACS).

Study Objectives: To longitudinally examine NIRS in an ACS model to determine its responsiveness to decreasing perfusion pressure.

Methods: A NIRS sensor pad was placed under a tourniquet over the anterior compartment in the mid-tibia region on 20 volunteers.

The reliability of measurement of tissue pressure in compartment syndrome.

Background: Although there is general agreement as to the pathophysiology and treatment of compartment syndrome and the importance of intramuscular pressure measurements, there are many methods described to obtain these measurements. Variations in experimental measurements using current electronic monitoring, needle, and catheter devices of 18 to 22 mmHg are reported and are enough to cause errors in clinical decision-making that could result in significant clinical consequences. Current unacceptable reliability has been reported with the use of bevel-tipped needles and the clinical Whitesides technique.