摘要:

AbstractThe fifth lumbar spinal nerve traverses a highly mobile transitional junction of the vertebral column. Evidence suggests that it is often implicated in the etiology of low‐back pain, notably in entrapment syndromes. There appears to be a high incidence of unsuccessful attempts at surgical decompression in cases of suspected entrapment of the nerve, suggesting that perhaps the anatomical information on the topography of the nerve is incomplete. The present study examined the course and relations of the fifth lumbar spinal nerve by gross dissection of human cadaveric material. The results showed that the nerve and its subdivisions follow a complex, tortuous course as they cross the lumbosacral junction. The trunk and ventral and dorsal rami are all related to strong ligaments that are thought to be protective. The nearness of these nerves to ligaments in such an area of high mobility, however, predisposes them to impingement or entrapment in the event of joint or ligamentous pathology. It is suggested therefore that investigations of spondylogenic low‐back pain should include a detailed evaluation of the status of all parts of the fifth lumbar spinal nerve as they traverse their individual osteoligamentous compartme

ISSN:0897-3806    

DOI:10.1002/ca.980040502

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractMany edentate human mandibles obtained at random from cadaveric subjects of different ages were cleansed of their soft tissue coverings (macerated) and then divided into groups based upon alveolar process resorption differences. Each mandible was transected at five locations corresponding to prior sites of the molar and premolar teeth. The medial surface area of each section and its cortical and medullary components were accurately measured by computerized digital morphometry. Skeletomorphologic details were examined by gross, microscopic, and radiographic methods. Images made visible by the three methods were compared. Comparison clearly indicated that images of cortical thickness peripherally, trabecular bone density centrally, and the differences in density of canal borders and their locations in many edentate mandibles are very often inadequately portrayed by conventional oral radiographic methods. These inadequacies present a strong caveat to the unwary oral implantologist.

ISSN:0897-3806    

DOI:10.1002/ca.980040503

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractA previously undescribed lymphatic plexus was found coursing longitudinally in association with the teniae coli during a routine demonstration of the gastroenteric subserous lymphatics using the hydrogen peroxide method. Further investigation using sections of the colon from autopsy specimens and dogs showed this plexus to be a constant anatomic feature and suggested that deficiencies in the classic methods of lymph vessel demonstration were responsible for the lack of previous observations. As these lymphatics may course several centimeters in both anal and oral directions before draining into regional mesocolic lymphatics, they provide a route by which malignant cells may extend, or be forced by operative manipulation of a tumor, to more distant sites in the colon wall. With awareness of these plexuses, generous ranges of resection and prophylactic measures to reduce malignant cell transfer should help reduce their possible contribution to suture line recurrences of colon tumors.

ISSN:0897-3806    

DOI:10.1002/ca.980040504

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractTwo hundred upper extremities of fresh human cadavers were used to study the anatomy of the tendinous apparatus of the flexor digitorum profundus (FDP) and flexor digitorum superficialis (FDS) muscles. This study describes the different types of mesotendons revealed by layered dissection, and the complex arterial network of the structures and their various sources of blood supply as revealed by the injection of colored latex or India ink solution in gelatin.

ISSN:0897-3806    

DOI:10.1002/ca.980040505

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractThe intramural lymphatic system draining the distal esophagus and gastric cardia was studied on 35 mongrel dogs, using a dye injection procedure. When the dye was injected into the esophageal or gastric mucosa within 2 cm of the esophago‐gastric junction (EGJ), a mesh of lympho‐capillary networks was observed advancing inferiorly or superiorly across the EGJ. The intramural lymphatics of the distal esophagus and gastric cardia anastomose, especially in the central part of the muscularis mucosae.On transmission electron microscopy, lumina filled with dye were proved to be lymphatic capillaries by demonstrating open gaps and overlapping or inter‐digitating endothelial cell processes. Some lympho‐capillaries containing dye were also observed beneath the esophageal epithelium. If the situation be extrapolated to human anatomy, the results suggest that lymphatic neoplastic metastases may occur even in early cases of carcinoma of the distal esophagus or gastric

ISSN:0897-3806    

DOI:10.1002/ca.980040506

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractThe anatomic relationships between the dorsal and ventral roots, spinal nerve, and dorsal and ventral rami of the lumbar spinal nerves have been described previously primarily on the basis of gross dissection and not on sectional anatomic techniques. Therefore, we examined the proximal spinal nerves in 16 cadavers by gross dissection, cryomicrotomy, and histology. On opening the root sheath that had been exposed by gross dissection, multiple fascicles could be identified intervening between the spinal nerve and the spinal nerve roots. Anatomic sections in a sagittal plane immediately distal (lateral) to the dorsal root ganglion demonstrated a plexus of fascicles 6–15 in number and 2–6 mm in length. On histologic sections the 6–15 fascicles were identified interspersed with fat and numerous small blood vessels. The proximal spinal nerve is formed from the convergence of these fasc

ISSN:0897-3806    

DOI:10.1002/ca.980040507

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

摘要:

AbstractThe right subclavian artery was found to be retroesophageal, and the right vertebral artery originated from the right common carotid artery in a 46‐year‐old female cadaver. The right subclavian artery stemmed from the upper portion of the thoracic aorta, posterior and inferior to the origin of the normal left subclavian artery. The right and left common carotid arteries originated from the aortic arch in close proximity. Compression of the trachea anteriorly could not be demonstrated. The right inferior laryngeal nerve was nonrecurrent. A brief review of the literature shows the importance of knowledge concerning the aberrant right subclavian artery for the roentgenologist and the surgeon in the treatment of patients with this vascular anom

ISSN:0897-3806    

DOI:10.1002/ca.980040508

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0897-3806    

DOI:10.1002/ca.980040509

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0897-3806    

DOI:10.1002/ca.980040510

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY

ISSN:0897-3806    

DOI:10.1002/ca.980040511

出版商:Wiley Subscription Services, Inc., A Wiley Company    

年代:1991

数据来源: WILEY