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R Shane Tubbs

Publications and source records attributed to R Shane Tubbs.

At least 55 records · Page 3Linked to original sources
PubMed2006

Unilateral occipital hyperhidrosis following Chiari I decompression: case report and a review of the literature.

INTRODUCTION: Paroxysmal unilateral cephalic hyperhidrosis is a rare disorder of the autonomic nervous system. CASE REPORT: We report an adult male who developed this disorder almost 20 years after posterior fossa decompression for Chiari I malformation with syringomyelia as a child. Further, the patient presented with spastic diplegia. To date, this patient has refused further operative intervention. The medical literature is reviewed regarding this unusual phenomenon. CONCLUSION: To our knowledge, hyperhidrosis of the occiput has not been previously reported in a patient with Chiari I malformation with an associated syringomyelia.

Adult↗
PubMed2006

The tabatière anatomique.

There is scant detailed information regarding the tabatière anatomique (anatomical snuff box) in the literature. The authors dissected this area in 15 adult cadavers (30 sides) and made measurements and observations of this region. We found that the average mean width and length of this geometric area was 4 cm and 6 cm, respectively. Although the dimensions of the tabatière anatomique tended to be larger among male specimens this trend did not reach statistical significance (P > 0.05). There was no statistical difference between left and right sides. The majority (70%) of specimens was noted to have connections between the cephalic vein and the vena comitantes of the radial artery within the tabatière anatomique. Five specimens were noted to have a muscular branch to the abductor pollicis brevis muscle arising from the dorsalis pollicis artery in the tabatière anatomique. The dorsalis pollicis artery was found to originate in the tabatière anatomique in all specimens. One right-sided specimen was noted to have an intraosseous branch of the radial artery that entered the styloid process of the radius. A well-formed collection of fat was noted between the styloid process and base of the first metacarpal in all specimens. This fat pad completely covered the radial artery in the majority of specimens and had loose connections to both the first and second dorsal compartments. The branches of the superficial branch of the radial nerve always originated distal to the tendon of the EPB muscle. These data may prove useful to the surgeon or clinician who operates or examines this interesting anatomical area.

Aged↗
PubMed2006

Complete ossification of the human falx cerebri.

During the routine dissection of the head and neck of an adult male cadaver complete ossification of the falx cerebri was noted. Anomalous ossification was not found in any other dural component or other parts of the body. The brain appeared grossly normal. Histological sections showed normal ossification processes involving the falx cerebri. In addition, rare scattered deposits of metastatic poorly differentiated carcinoma within the trabecular spaces were seen. Reports of isolated islands of ossification involving primarily the most anterior part of the falx cerebri in man are found in the literature. Our case report represents to our knowledge, the first report of complete ossification of this dural partition. Whether this is simply an anomalous configuration or due to the few metastatic cells found within this region remains unclear.

Aged↗
PubMed2006

Bony anomaly of Meckel's cave.

This study describes the seemingly rare occurrence of bone formation within the proximal superior aspect of Meckel's cave thus forming a bony foramen for the proximal trigeminal nerve to traverse. The anatomy of Meckel's cave is reviewed and the clinical potential for nerve compression from this bony anomaly discussed.

Adult↗
PubMed2006

Descriptive anatomy of the insertion of the biceps femoris muscle.

The biceps femoris is the most lateral component of the so-called hamstring muscles. Classically, this muscle's insertion into the head of the fibula has been described but further details of its anatomy have not been universally appreciated. Additional insertions into the crural fascia and tibia have been described. We dissected 56 cadavers paying especially close attention to the insertion of the biceps femoris muscle. The tendon of this muscle was found to have both medial and lateral slips each with an anterior and posterior component. Further, we found an attachment not only into the lateral condyle of the femur but also the popliteus tendon and arcuate popliteal ligament. Our study has found that the tendon of insertion of the biceps femoris muscle is more complex than described previously and suggests that this tendon may be far more important in knee stability based on the multiple attachment sites found. We hypothesize that there may be a synergistic effect between the biceps femoris and the popliteus muscles based on our findings of an additional attachment of the biceps femoris tendon into the popliteus tendon. This study provides new detailed nomenclature for the description of the tendon of insertion of the biceps femoris muscle and indicates that the current description of the insertion of the tendon of the biceps femoris muscle should be revised. The clinician must have a thorough understanding of this anatomy before correct therapeutic maneuvers can be implemented.

Humans↗
PubMed2006

An unusual case of a mediastinal mass in a cadaver.

Since 1975, only approximately 60 saphenous vein graft aneurysms have been reported in the medical literature. We now report this unusual finding in a male cadaver who had undergone a recent coronary artery bypass grafting procedure. Although aneurysm formation is an unusual complication of saphenous vein graft surgery, the diagnosis must be suspected particularly in the face of a mediastinal mass on chest radiography in patients who have undergone coronary artery bypass grafting. Needle biopsy in these cases may prove lethal. We believe this to be the first description of this complication in a cadaver.

Aged↗
PubMed2006

Artificial deformation of the human skull: a review.

Early examples of intentional human cranial deformation predate written history. Intentional cranial deformation as an extreme has seemingly not persisted into this century. However, mild forms of this manipulation are still practiced by various groups worldwide. Accidental cranial deformation or mild forms of intentional cranial deformation may be encountered by the clinician or anatomist. We review the literature regarding intentional manipulation of the human cranium.

History, 19th Century↗
PubMed2006

Neurenteric cyst: case report and a review of the potential dysembryology.

We report a 13-year-old female who presented to an outside emergency room following blunt trauma to the head. As part of her evaluation, an unenhanced CT of the face and radiographs of the cervical spine were performed. She was referred to our clinic with "abnormal" imaging. Radiographs revealed dysmorphic cervical spine and ventral clefting of the vertebral bodies from C7-T2. A subsequent MRI was obtained that demonstrated a large spinal cord mass. MRI demonstrated an unenhanced intramedullary mass of the cervicothoracic spinal cord measuring approximately 1.5 cm in greatest axial diameter. Surgical exploration of her intraspinal mass revealed a neurenteric cyst. Spinal neurenteric cysts are categorized in the spectra of occult spinal dysraphism and most likely arise from incomplete separation of the developing notochord and foregut in the embryo. We discuss potential etiologies for the formation of such cysts. The clinician should consider neurenteric cysts in their differential diagnosis of patients with spinal dysraphism and/or intraspinal masses.

Adolescent↗
PubMed2006

Dissection of a rare accessory muscle of the leg: the tensor fasciae suralis muscle.

We report a case of the rare tensor fascia suralis muscle. This muscle was found during the routine dissection of the lower extremity in an adult male cadaver. No other anomalies were noted in this specimen. The innervation of this muscle was via the tibial component of the sciatic nerve. Although seemingly rare, the tensor fascia suralis muscle may be considered by the clinician in the differential diagnosis of masses over the posterior lower extremity.

Adult↗
PubMed2006

Anomaly of the supraclavicular nerve: case report and review of the literature.

We report a male cadaver found to have his right intermediate branch of the supraclavicular nerve piercing the clavicle. No other anomalies were found in this specimen. Following a review of the literature, it appears that symptoms related to this finding are rare but do occur most commonly involving the intermediate branch of the supraclavicular nerve. Symptoms may be alleviated with surgical decompression of the entrapped nerve. Although rare, the clinician should include entrapment of the supraclavicular nerve within the clavicle in their differential diagnosis of shoulder pain.

Aged, 80 and over↗
PubMed2006

Lap-belt injury with complete avulsion of the spinal cord and cauda equina.

The authors report a child who was involved in an automobile accident. The patient was restrained by a rear seat lap belt. Radiological examination revealed an L4 Chance-type fracture and ligamentous disruption at the L4-L5 interval. During superficial dissection of the paraspinal muscles for a spinal fusion procedure, the cauda equina and the lower spinal cord (several centimeters) were visible, completely transected and herniated into the extraspinal space through a disrupted thoracolumbar fascia. The clinician should be aware of the potentially devastating results following a lap-belt injury in which a Chance fracture is produced.

Accidents, Traffic↗
PubMed2006

The psoas quartus muscle.

We report an unusual finding in an adult male cadaver. During the routine dissection of the posterior abdominal wall as part of an anatomy course at our institution, an anomalous muscle was noted. This muscle originated from the transverse process of the left L3 vertebrae and the medial aspect of the quadratus lumborum. We believe this muscle to represent a variety of the psoas quartus that, to our knowledge, has only been described once before in the extant medical literature. The presence of a psoas quartus muscle may contribute to femoral nerve compression. The clinician may wish to consider this rare muscular anomaly in patients with symptoms of femoral nerve compression in which no other clear etiology is found. Furthermore, clinicians who image the posterior abdominal wall should be aware of this potential anomaly when interpreting the anatomy of this region.

Aged↗
PubMed2006

Ansa cervicalis as a variant of spinal accessory nerve plexus: a case report.

The ansa cervicalis is a neural loop in the neck formed by the union of two main nerve roots, namely superior and inferior roots, derived from ventral rami of the cervical nerves. With the expanding use of the ansa cervicalis for reinnervation procedures and the fact that it is located in the vicinity of major nerves and vessels of the neck, knowledge of the topography and morphology of this loop is quite necessary in the modern era. Any variation in the course, contributing roots or branching pattern of the ansa cervicalis, potentially alters and perhaps complicates the course of the procedures involving this nerve such as neurorrhaphy, skull base surgery, neck dissection, and anterior cervical spinal approach. Here, we present an unusual case of an ansa cervicalis encountered upon routine dissection of an adult male cadaver. In this case, the inferior root of the ansa cervicalis was formed by the joining of two rootlets, one originating from spinal accessory nerve and the other from a branch of the cervical plexus to the sternocleidomastoid muscle. The fibers traversing the branch of spinal accessory nerve were derived from the first segments of the cervical spinal cord. This case demonstrates a variant of the spinal accessory nerve plexus that contributed to the formation of the ansa cervicalis. Review of the literature was performed to reveal the possible clinical aspects of this anatomical variation.

Adult↗