STUDY DESIGN Analysis of positional magnetic resonance images of normal volunteers. OBJECTIVE To compare the reliability and precision of an active shape model to that of conventional lordosis measurements. SUMMARY OF BACKGROUND DATA Characterization of lumbar lordosis commonly relies on measurement of angles; these have been found to have errors of around 10 degrees . METHODS T2 weighted...

STUDY DESIGN Exploratory study of regional muscle activity in different postures. OBJECTIVE To detail the relationship between spinal curves and regional muscle activity. SUMMARY OF BACKGROUND DATA Sagittal balanced spinal posture (C7 above S1 in the sagittal plane) is a goal for spinal surgery and conservative ergonomics. Three combinations of thoracolumbar and lumbar spinal curves can be ...

STUDY DESIGN Prospective study. OBJECTIVE To identify the impact of laminoplasty on range of motion (ROM) and sagittal alignment of the cervical spine. SUMMARY OF BACKGROUND DATA Cervical laminoplasty is an effective procedure decompressing multilevel spinal cord compression. Preoperative lordosis of the cervical spine is a prerequisite for laminoplasty, and maintaining postoperative lordos...

BACKGROUND A retrospective study of lumbosacral angle (LSA) in normal lateral supine lumbosacral radiographs of 274 Nigerians (aged 15-74 years) of Southeast region. A supine lateral lumbar spine radiograph is a very accurate means of measuring lordotic angles. The LSA is one of such angles, and can be used in the investigation, treatment and follow-up of low back disorders. Little is known abo...

STUDY DESIGN Observational study. PURPOSE To correlate lumbar lordosis and lumbar core strength in information technology (IT) professionals. OVERVIEW OF LITERATURE IT professionals have to work for long hours in a sitting position, which can affect lumbar lordosis and lumbar core strength. METHODS Flexicurve was used to assess the lumbar lordosis, and pressure biofeedback was used to ass...

This study aims to assess the differences in the radiological and clinical results depending on the lordotic angles of the cage in posterior lumbar interbody fusion (PLIF). We reviewed 185 segments which underwent PLIF using two different lordotic angles of 4° and 8° of a polyetheretherketone (PEEK) cage. The segmental lordosis and total lumbar lordosis of the 4° and 8° cage groups were compare...

Despite the increasing recognition of the functional and clinical importance of lumbar lordosis, little is known about its description, particularly in Egypt. At the same time, magnetic resonance imaging (MRI) has been introduced as a noninvasive diagnostic technique. The aim of this study was to investigate the anatomy of the lumbar lordosis using midsagittal MRIs. Normal lumbar spine MRIs obt...

BACKGROUND The understanding of the individual shape and mobility of the lumbar spine are key factors for the prevention and treatment of low back pain. The influence of age and sex on the total lumbar lordosis and the range of motion as well as on different lumbar sub-regions (lower, middle and upper lordosis) in asymptomatic subjects still merits discussion, since it is essential for patient-...

STUDY DESIGN  Prospective cohort study. CLINICAL QUESTION  Does the patients' body mass index (BMI) influence the degree of intraoperative lumbar lordosis in patients undergoing operative treatment on the Mizuho Orthopedic Systems Incorporated (OSI) Jackson spinal table? METHODS  Twenty-four consecutive patients undergoing posterior spinal instrumentation and fusion on the Jackson table, ex...

STUDY DESIGN Retrospective case series. PURPOSE To elucidate the impact of postoperative occiput-C2 (O-C2) angle change on subaxial cervical alignment. OVERVIEW OF LITERATURE In the case of occipito-upper cervical fixation surgery, it is recommended that the O-C2 angle should be set larger than the preoperative value postoperatively. METHODS The present study included 17 patients who unde...