The role of experience level in radiographic evaluation of femoroacetabular impingement and acetabular dysplasia.

Accurate radiographic interpretation is essential for properly diagnosing the etiology of pre-arthritic hip pain such as femoroacetabular impingement (FAI) and acetabular dysplasia (AD); however, radiographic interpretation can be significantly influenced by the observer's experience level. This study assesses the accuracy and inter- and intraobserver reliability in the radiographic evaluation of FAI and AD based on experience level. Fifty-five patients diagnosed with FAI, AD or normal hip morphology were identified from the principal investigator's institutional database.

Effects of glenosphere positioning on impingement-free internal and external rotation after reverse total shoulder arthroplasty.

Introduction: Patients may experience a loss of internal rotation (IR) and external rotation (ER) after reverse total shoulder arthroplasty (RTSA). We hypothesized that alterations in the glenosphere position will affect the amount of impingement-free IR and ER.

Materials And Methods: Computed tomography (CT) scans of the scapula and humerus were obtained from 7 cadaveric specimens, and 3-dimensional reconstructions were created.

Humeral component retroversion in reverse total shoulder arthroplasty: a biomechanical study.

Background: Reverse total shoulder arthroplasty offers pain relief and functional improvement for patients with rotator cuff-deficient shoulders. The purpose of this study was to determine the optimal amount of humeral retroversion for this prosthesis.

Materials And Methods: Six cadaveric shoulders underwent computed tomography (CT) imaging and were then dissected of soft tissues, except for their tendinous attachments.

The 23-point arthroscopic examination of the hip: basic setup, portal placement, and surgical technique.

The 23-point arthroscopic examination of the hip has been used for more than 400 arthroscopic hip procedures. It ensures that all components of the hip are carefully inspected and allows for proper documentation. It is vital that a precise knowledge of hip anatomy and common portal placement is coupled with proper patient selection, sound preoperative planning, and a consistent arthroscopic technique in order to maximize clinical outcomes.

The impact of intra-abdominal hypertension on gene expression in the kidney.

Background: Intra-abdominal hypertension (IAH) has been recognized as a source of morbidity and mortality in the injured patient. Research concerning this entity has focused predominantly on the pathophysiology. We developed a model of IAH to determine whether gene expression is altered in the presence of this condition.