Inclusion of L5-S1 in oblique lumbar interbody fusion-techniques and early complications-a single center experience.

Background Context: The oblique prepsoas retroperitoneal approach to the lumbar spine for interbody fusion or oblique lumbar interbody fusion (OLIF) provides safe access to nearly all lumbar levels. A wide interval between the psoas and aorta allows for a safe and straightforward left-sided oblique approach to the discs above L5. Inclusion of L5-S1 in this approach, however, requires modifications in the technique to navigate the complex and variable vascular anatomy distal to the bifurcation of the great vessels.

Diagnosing Sacroiliac Joint Pain.

The sacroiliac joint (SIJ) is a diarthrodial joint that has been implicated as a pain generator in approximately 10% to 25% of patients with mechanical low back or leg symptoms. Unique anatomic and physiologic characteristics of SIJ make it susceptible to mechanical stress and also create challenges in the diagnosis of SIJ pain. A variety of inciting causes for SIJ pain may exist, ranging from repetitive low-impact activities such as jogging to increased stress after multilevel spine fusion surgery to high-energy trauma such as in motor vehicle accidents.

Not All Hip Dysplasias are the Same: Preoperative CT Version Study and the Need for Reverse Bernese Periacetabular Osteotomy.

Background: Dysplastic hip may present with acetabular retroversion with or without femoral retroversion. This retroversion, if not accounted for when performing a periacetabular osteotomy (PAO), will lead to anterior hip pain and early osteoarthritis. A reverse PAO involves anteverting the acetabulum while still obtaining lateral coverage.

Current Practice in the Management of Slipped Capital Femoral Epiphysis.

Background: The most widely used treatment for slipped capital femoral epiphysis (SCFE) is in situ fixation. In an attempt to reduce the chances of impingement, osteoarthritis, and osteonecrosis, surgeons have started adopting newer surgical techniques. The purpose of this study was to determine the current pattern of treating SCFE.

Transverse process hooks at upper instrumented vertebra provide more gradual motion transition than pedicle screws.

Study Design: Biomechanical study in a porcine model.

Objective: To determine whether transverse process hooks (TPHs) placed at the proximal end of a long posterior spinal fusion construct provide a more gradual transition to normal motion of the adjacent cephalad motion segment compared with an all pedicle screw (APS) construct.

Summary Of Background Data: Proximal junctional kyphosis after instrumentation with long posterior spinal constructs has been increasingly associated with incidence of adjacent segment pathologies.

Hip dysplasia in patients with Hurler syndrome (mucopolysaccharidosis type 1H).

Background: Hip dysplasia is common in patients with Hurler syndrome (HS). However, its prevalence and optimal management is not yet clear because of the rarity of the disease and the prior short life span of these patients. Recent advances in the management of these children using allogeneic hematopoietic cell transplant (HCT) has significantly increased their life expectancy, with many surviving into adulthood.