Biomechanics of cantilever "plow" during anterior thoracic scoliosis correction.

Background Context: Anterior instrumentation is often used for correction of thoracic scoliosis. Loss of spinal correction may occur after failure at the bone-implant interface, and forces on the bone-implant interface during scoliosis correction remain unclear.

Purpose: Evaluate two different mechanisms of loading associated with anterior scoliosis correction.

Increasing the insertion depth of suture anchors for rotator cuff repair does not improve biomechanical stability.

The purpose of this study was to evaluate whether deeper-than-recommended insertion of a suture anchor within the rotator cuff footprint of human cadaveric humeri affects fixation characteristics. Metallic 5-mm screw-in anchors loaded with a single No. 2 suture were placed in the infraspinatus footprint of 8 human cadaveric humeri at standard and deep depths.

Biomechanical analysis of anterior instrumentation for lumbar corpectomy.

Study Design: In vitro biomechanical assessment of spinal stability after corpectomy reconstruction. OBJECTIVES To gain a more thorough understanding of the biomechanical properties of anterior plate versus dual rod systems used for anterior lumbar corpectomy reconstruction.

Summary Of Background Data: Vertebral corpectomy is commonly required in the treatment of several types of spinal pathology (fracture, tumor, infection).