Association between degenerative spondylolisthesis and spinous process fracture after interspinous process spacer surgery.

Background Context: Spinous process fracture is a recognized complication associated with interspinous process spacer (IPS) surgery. Although occasionally identified by plain radiographs, computed tomography (CT) appears to identify a higher rate of such fractures. Although osteoporotic insufficiency fracture is considered a contraindication for IPS surgery, a formal risk factor analysis for this complication has not previously been reported.

Long head of biceps tendon pathology: management alternatives.

The role of biceps tendon as a source of shoulder pain and pathology has been well documented in orthopedic literature. Recently, interest in the long head of the biceps tendon has been renewed as its association with subscapularis lesions, superior labral anterior to posterior (SLAP) lesions, rotator cuff pathology, impingement, and pulley or "hidden" lesions of the rotator interval are demonstrated. Advances in imaging and arthroscopy have increased our breadth of knowledge about the anatomy, pathology, and role of the biceps tendon.

Computed tomography-based surgical navigation for hip arthroplasty.

Component malpositioning and postoperative leg length discrepancy are the most common technical problems associated with total hip arthroplasty (THA). Surgical navigation offers the potential to reduce the incidence of these problems. We reviewed 317 patients (344 hips) that underwent THA using computed tomography-based surgical navigation, including 112 THAs using a simplified method of measuring leg length.