The lumbosacral trunk, typically comprised of part of the fourth lumbar ventral rami and the entirety of the fifth lumbar ventral rami, serves as a connection between the lumbar and sacral plexuses. Developmental differences underlie the variable relative contributions of L4 and L5 to the lumbosacral trunk. Herein, we report a rare case in which dissection of an adult male cadaver revealed no L...

Failed back surgery syndrome (FBSS) is a term used to define an unsatisfactory outcome of a patient who underwent spinal surgery, irrespective of type or intervention area, with persistent pain in the lumbosacral region with or without it radiating to the leg. The possible reasons and risk factors that would lead to FBSS can be found in distinct phases: in problems already present in the patien...

Certain argyrophile bodies have been found in the adult human spinal cord which do not seem to have been described before. These bodies occur mainly in the anterior horns of the lumbosacral region, and they have been found in every case of a large series of patients dying from a variety of conditions. The purpose of this paper is to describe and illustrate these argyrophile bodies, to discuss t...

BACKGROUND The biomechanical property of MGT for patients who underwent partial sacrectomy is not well documented, so this study aimed to investigate biomechanical property of lumbosacral reconstruction after partial sacrectomy. MATERIAL AND METHODS Three 3-dimensional finite element models of lumbosacral region were established: 1) an intact model (INT), 2) a defective model in which partial...

INTRODUCTION Conjoint nerve root is embryological nerve root anomaly mainly involving lumbosacral region. The anomalous roots present primarily as a bifid, conjoined structure arising from a wide area of the dura. Because of their size and attachment to surrounding structures, they are uniquely susceptible to trauma. The effects of compression and entrapment are amplified in the presence of ste...

OBJECTIVE Five large myelomeningocele defects repaired by bilateral fasciocutaneous flaps are presented in this article. PATIENTS AND METHODS After the neurological repair, bilateral fasciocutaneous flaps were raised, transposed over the midline, and sutured to each other. RESULTS All operations lasted shorter than one hour and no major complication was noted in the follow-up. Three of the ...

Clinical localisation of a disc prolapse required dependable knowledge of the muscles supplied by the lumbosacral nerve roots. Localisation is most difficult in the 10 per cent of patients who have lumbosacral bony segmental anomalies. The lumbosacral plexus has been dissected in 11 cadavers with such anomalies and electrical stimulation studies carried out in 15 patients similarly afflicted. I...

Congenital agenesis of lumbar vertebrae was diagnosed in a day-old female lamb based on radiology and clinical examinations. There was no neurological deficit in hindlimb and forelimb associated with standing disability. Radiography of the abdominal region revealed absence of lumbar vertebrae. Necropsy confirmed clinical and radiographic results. No other anomaly or agenesis was seen macroscopi...

Spinal dysraphisms are lesions that can be identified at ultrasound screening examination from the second trimester of pregnancy, the majority being localized in the lumbosacral region. We present the case of prenatal ultrasound diagnosis of a 18 weeks fetus with cervical open dysraphism, a rare localization of open spinal dysraphisms. The alteration of cerebral normal anatomy was first identi...

Case summary A 12-year-old neutered male domestic shorthair cat was presented to our referral hospital with a chronic history of tenesmus and lumbosacral pain. A diagnosis of degenerative lumbosacral stenosis (DLSS) was made and a standard dorsal L7-S1 laminectomy was performed uneventfully, with complete recovery within 1 month. The cat was brought back 4 months later for investigation of lumb...