The Direct Anterior Approach for Total Hip Arthroplasty By E. Marc Mariani, MD, and Michael H. Bourne, MD Background The direct anterior approach to total hip arthroplasty offers several advantages, including utilization of the supine position, use of anatomical intervals for soft-tissue preservation, and use of intraoperative fluoroscopy for verification of acetabular and femoral prosthetic po...

CONTEXT Somatic dysfunctions of the pelvis, sacrum, and lumbar spine are common. Their association with leg length discrepancies has been observed; however, it is unclear which dysfunctions lead to mild changes in leg length or weight bearing distribution in asymptomatic individuals. OBJECTIVES To determine which somatic dysfunctions of the pelvic, sacral, and lumbar spine lead to minor leg l...

In this paper, we present an automated method for colon registration. The method uses dynamic programming to align data defined on colon center-line paths, as extracted from the prone and supine scans. This data may include information such as path length and curvature as well as descriptors of the shape and size of the colon near the path. We show how our colon registration technique can be us...

BACKGROUND The physiological basis underlying the decline in the incidence of sudden infant death syndrome (SIDS) associated with changing the sleep position from prone to supine remains unknown. AIMS To evaluate diaphragm thickness (t(di)) and shortening in healthy term infants in the prone and supine positions in order to determine whether changes in body position would affect diaphragm res...

Astronauts experience spine deconditioning during exposure to microgravity due to the lack of axial loads on the spine. Treadmill exercise in a lower body negative pressure (LBNP) chamber provides axial loads on the lumbar spine. We hypothesize that daily supine LBNP exercise helps counteract lumbar spine deconditioning during 28 days of microgravity simulated by bed rest. Twelve sets of health...

OBJECTIVES Although referrals for nonsynostotic plagiocephaly (NSP) have increased in recent years, the prevalence, natural history, and determinants of the condition have been unclear. The objective of this study was to assess the prevalence and natural history of NSP in normal infants in the first 2 years of life and to identify factors that may contribute to the development of NSP. METHODS...

The objective of this study was to compare the clinical results and complications of proximal femoral nail antirotation (PFNA) on treatment of intertrochanteric fractures in 120 elderly Chinese patients using Randomized Controlled Trials (RCTs). Totaly 120 cases enrolled were randomly assigned to a lateral decubitus position group and supine position group. The hospital stay, operating time, in...

Background: Positioning of premature newborns significantly affects their health status. However, the most suitable position remains controversial. The current study aimed to compare the effect of supine and prone positions on oxygen saturation and vital signs in premature newborns. Methods: In this crossover clinical trial, a total of 22 new...