Factor Description Study design Anonymity, consequence for medical record Sample Combat arms vs. population Measurement Interview vs. survey; DSM-IV vs. DSM-5 criteria Timing Immediate vs. delayed post-deployment Service type Active…
Clinical Anatomy of the Sciatic Nerve The sciatic nerve is the largest nerve of the body, originating from the L4–S3 nerve roots. The nerve is formed from the lumbosacral and…
Median nerve compression at the wrist was described by Sir James Paget in 1853, but it was not until 1933 that Learmonth first described a surgical procedure to release the…
The advent of nerve grafts has revolutionized the treatment of nerve injuries. Before nerve grafts, techniques such as extreme limb flexion or limb shortening were used with a high degree…
Obtaining surgical access to the anterior vertebral elements of the upper thoracic vertebrae (T1–6) presents a unique anatomical challenge. The thoracic cage, which narrows significantly as it approaches the thoracic…
Lumbar synovial cysts have been described in the literature as an uncommon cause of low back and radicular pain. These synovial cysts arise from facet joints in the lumbar spine,…
Exposure of the brachial plexus is a major task. Indications include trauma, tumors, and thoracic outlet syndrome. In this chapter, we describe the supraclavicular and infraclavicular approaches that expose the…
Patient Selection A variety of extradural tumors can involve the cervical spine. These include chordomas, giant cell tumors, aneurysmal bone cysts, and metastatic tumors. Radical surgical excision and stabilization constitute…
Ulnar nerve lesions at the wrist are well described ( ▶ Fig. 64.1). The site of compression is commonly known as Guyon canal, the space of Guyon, the distal ulnar…
In 1932 Schmorl published a manuscript in which he described common pathological changes of the lumbar intervertebral disk as found at autopsy. He famously described that in ~ 38% of…
