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At least 163 records · Page 9Linked to original sources
PubMed2000

Injuries to the lateral femoral cutaneous nerve during spine surgery.

STUDY DESIGN: A prospective study to locate patients with injured lateral femoral cutaneous nerve after elective spine surgery. OBJECTIVES: To assess the prevalence of injury of the lateral femoral cutaneous nerve and to identify the cause of injury according to the position of the patients at surgery and the surgical approach. SUMMARY OF BACKGROUND DATA: Injuries to the lateral femoral cutaneous nerve, also known as meralgia paresthetica, may cause pain and therefore result in restriction of activity. Compression of the nerve by disc hernia, retroperitoneal tumors, and external pressure around the anterior superior iliac spine are among the more common causes. METHODS: One hundred five patients admitted for elective spine procedures were grouped according to position on the operating table and surgical approach. All patients were examined before and after surgery for signs of injury to the lateral femoral cutaneous nerve, and those found injured were followed up for 1 year after surgery. RESULTS: Injury to the lateral femoral cutaneous nerve was found in 21 (20%) patients. In 6 of them, all of whom underwent surgery on the Hall-Relton frame, the injury was bilateral. In 7 patients the injury was not associated with discomfort. In addition to injury by external pressure at the anterior superior iliac spine from the Hall-Relton frame, the nerve was also injured at the retroperitoneum by hematoma or traction and at the anterior iliac crest when bone was harvested. In 89% of the patients, the nerve completely recovered within 3 months of surgery. Two patients still had pain 1 year after surgery and hypoesthesia of the anterolateral thigh. CONCLUSION: Injuries to the lateral femoral cutaneous nerve during spine surgery are frequent, and patients should be informed of the possible risk. It usually has a benign course, but some preventive steps should be taken: keep posterior to the anterior superior iliac spine and minimize retraction when harvesting a bone graft, pad the posts of the Hall-Relton frame over the anterior superior iliac crest, and avoid traction on the psoas muscle during the retroperitoneal dissection.

Age Distribution↗
PubMed2003

Acute bilateral iliac artery occlusion secondary to blunt trauma: successful endovascular treatment.

INTRODUCTION: Endovascular treatment of blunt vascular trauma has been infrequently reported. PRESENTATION: A 27-year-old man was crushed between a fork-lift truck and a concrete platform. The physical examination was remarkable for hemodynamic stability, significant lower abdominal ecchymosis and tenderness, obvious pelvic fracture, and gross hematuria. Vascular examination revealed no femoral pulses, no pedal signals bilaterally, and minimal left leg and no right leg motor function. Arteriograms revealed right common iliac artery and external iliac artery occlusion and a 2-cm near occlusion of the left external iliac artery. TREATMENT: In the operating room, bilateral common femoral artery access was obtained, and retrograde arteriogram on the right side demonstrated free extravasation of contrast material at the level of the proximal external iliac artery. An angled glide wire was successfully traversed over the vascular injury, and two covered stents (Wallgraft, 10 x 50 mm and 8 x 30 mm) were deployed. The left iliac injury was similarly treated with an 8 x 30-mm covered stent. After calf fasciotomy, exploratory laparotomy revealed a severe sigmoid colon degloving injury, requiring resection and colostomy. A suprapubic catheter was placed because of bladder rupture, and an open-book pelvic fracture was treated with external fixation. Postoperatively the patient regained palpable bilateral pedal pulses and normal left leg function, but right leg paralysis persisted secondary to severe lumbar plexus nerve injury. CONCLUSION: Endovascular repair of blunt intra-abdominal arterial injuries is possible and should be particularly considered when fecal contamination, pelvic hematoma, or multiple associated injuries make conventional repair problematic.

Adult↗
PubMed1996

Bone structure and turnover in the distal radius and iliac crest: a histomorphometric study.

In bone grafting procedures of the wrist, the distal radius would be a more convenient graft donor site than the conventionally used iliac crest. We compared tetracycline-labeled bone biopsies from these two sites in 18 white patients (12 males, 6 females, aged 26-66 years) undergoing bone grafting procedures of the wrist. Fourteen had had previous trauma, 1 osteonecrosis of the lunate, 2 mild rheumatoid arthritis, and 1 a brachial plexus palsy. The specimens were processed undecalcified and examined by routine histomorphometry for bone structure, static and dynamic bone turnover variables, and marrow cellularity. We found that bone from the distal radius had thinner cortices (p = 0.0001), lower bone volume (p = 0.01), thinner trabeculae (p = 0.029), greater trabecular separation (p = 0.015), and lower wall thickness (p = 0.0001), marrow cellularity (p = 0.0001), osteoid volume (p = 0.01), osteoid surface (p = 0.02), osteoid thickness (p = 0.0002), osteoblast surface (p = 0.001), eroded surface (p = 0.01), osteoclast surface (p = 0.012), mineral apposition rate (p = 0.0002), double-labeled surface (p = 0.0005), single-labeled surface (p = 0.006), bone formation rate (p = 0.0005), adjusted apposition rate (p = 0.0001), longer mineralization lag time (p = 0.012), and greater activation frequency (p = 0.003). Prolonged mineralization lag time in the radius was associated with thin osteoid seams and low adjusted apposition rates and was therefore attributable to a low level of osteoblast activity rather than to osteomalacia. We conclude that bone from the distal radius was structurally inferior to and had lower turnover than the iliac crest bone. We suggest that where a graft has to provide immediate structural integrity, the iliac crest is the preferred donor site. However, where bone graft is to be compacted into a small cavitary defect, distal radial bone may be an adequate alternative. A clinical study is needed to confirm this assumption.

Adult↗
PubMedDate not supplied

[Vasomotor innervation of the arteries and veins of Rana temporaria frogs].

Adrenergic and cholinergic innervation of frog arteries and veins has been studied histochemically using glyoxilic acid and the method of Karnovsky--Roots. It was shown that the vessels studied differ in catecholamine-containing structures, the intensity of fluorescence of adrenergic nerve endings, the density of nervous plexus and the direction of nerve fibers. It was found that adrenergic innervation is present not only in the arteries, but in the veins as well. Morphometrical analysis indicates that the density of adrenergic plexus per volume unit of vascular wall in the veins investigated is higher than the density of adrenergic nerves in the arteries. This finding suggests that the nervous control of the veins appears in evolution beginning from amphibians, but not from reptiles. It was reliably demonstrated that aorta thoracica and pulmonary artery receive cholinergic innervation, the density of cholinergic plexus in the latter being twice higher than that of adrenergic one.

Abdomen↗
PubMed2006

Vascular anatomy of the presacral space in unembalmed female cadavers.

OBJECTIVE: The purpose of this study was to characterize the vascular anatomy of the female presacral space (PSS) and to correlate findings to the abdominal sacrocolpopexy. STUDY DESIGN: Detailed dissections of the PSS were performed in 52 unembalmed female cadavers. RESULTS: The closest cephalad vessel to the mid sacral promontory (MSP) was the left common iliac vein (LCIV), mean distance 27 mm (9-52 mm). The closest vessel lateral to MSP was also the LCIV, mean distance 22 mm (9-35 mm). The average distance of the middle sacral artery and vein to the MSP was 4 mm (0-15 mm) and 7 mm (0-17 mm), respectively. The mean distance of the sacral venous plexuses to the MSP was 34 mm (4-86 mm). CONCLUSION: Anatomic location of the vascular boundaries and contents of the PSS is highly variable. Careful dissection and exposure of the anterior longitudinal ligament of the sacrum before suture placement should minimize potentially life-threatening vascular complications.

Aged↗
PubMed2004

Continuous psoas compartment blocks after major orthopedic surgery in children: a prospective computed tomographic scan and clinical studies.

UNLABELLED: Femoral shaft or hip surgeries are very painful for children. We conducted both computed tomographic (CT) and clinical prospective studies to define new landmarks in children and to evaluate the effectiveness of continuous psoas compartment blocks (CPCBs) using disposable elastomeric pumps. In a preliminary CT scan study of 20 patients, the plexus depth was correlated to patient age and the optimal point of puncture for CPCB was three-quarters of the distance from the spinous process of L4 to a line parallel to the spinal column passing through the posterior superior iliac spine. In a subsequent prospective series, a CPCB was administered before surgery to 15 children for pain relief after femoral and hip osteotomies. After general anesthesia, a 0.5 mL/kg bolus of a mixture of 1% lidocaine with epinephrine (1/200.000) and 0.5% ropivacaine was injected through the CPCB catheter. After contrast media assessment of the catheter location, a disposable pump (Infusor LV); Baxter, Paris, France) with 0.2% ropivacaine was connected and pump flow was adjusted to the patient's weight (0.2 mg x kg(-1) x h(-1)). Postoperative pain was evaluated using a visual analog scale or the Children and Infants Postoperative Pain Score at hour H1, H6, H12, H18, H24, H36, and H48, and in terms of rescue analgesia, adverse events, and motor blocks. All blocks were effective during surgery. Postoperative analgesia was excellent. The median pain scores were 1 for H1 and 0 beginning H6. The motor blockade was minimal before 24 h and absent thereafter. No major adverse event was noted. Parents of 93% of the children were satisfied. We conclude that postoperative analgesia with CPCB is a very effective technique in children after major proximal lower limb orthopedic surgery. The CT scan landmarks described in this study were more medial than the conventional landmarks used in the literature. IMPLICATIONS: Continuous psoas compartment blocks provide optimal pain relief in children after major orthopedic surgery without major adverse events. The landmarks used, defined in a preliminary computed tomographic scan study, were more medial than conventional landmarks.

Adolescent↗
PubMed1994

[Clinical study of the hypogastric plexus preserving operation for Y-prosthesis replacement for abdominal aneurysm--operative technique for avoiding postoperative sexual disorders].

We studied the effect of the hypogastric plexus preserving operation for Y-prosthesis replacement in abdominal aneurysm. The hypogastric plexus preserving operation was performed for avoiding postoperative sexual disorders such as the impotence and the abnormalities of ejaculation. With wide abrasion of retroperitoneum as usually, postoperative abnormalities of ejaculation occurred in 70% and postoperative impotence occurred in 50% of cases undergoing Y-prosthesis replacement. More reliable nerve preserving operation was the minimum abrasion of retroperitoneum and the aorta had not to he abrased at the origin of the inferior mesenteric artery, bifurcation of the aorta and the common iliac artery. Then with this nerve preserving operation, abnormalities of ejaculation occurred in 30% (p < 0.05) of cases and impotence occurred in 20% of cases. The results indicate that sexual dysfunction may he prevented to minimize by the nerve preserving operation.

Aged↗
PubMed1992

[Arterial embolism, venous thrombosis, pulmonary embolism: a suggestive triad].

The aim of this study is to present a relatively rare case of paradoxical arterial embolism, found in a patient who was sent to us for serious pulmonary embolism. Taking into account that the foramen ovale, despite being functionally competent, remains anatomically patent in 30% of the adult population, we cannot neglect the possibility of a paradoxical embolism, in the presence of a sudden embolic limb ischemia unless heart pathology or aortic lesions can be held responsible. Furthermore it must not be forgotten that deep venous thrombosis in the lower limbs or in the pelvic plexus may go unobserved on a purely clinical evaluation.

Axillary Artery↗
PubMed2004

Pediatric blunt trauma resulting in major arterial injuries.

Ten children, aged 4 to 14 years, sustaining blunt arterial trauma from motor vehicle collisions (6), bicycle accidents (2), and falls (2) were identified over a 10-year period. The arteries injured included the common iliac (3), abdominal aorta (2), carotid (2), brachial (2), and the subclavian, renal, and femoral artery (1 each). One patient had three arterial injuries. Six patients had associated injuries including a pelvic and lumbar spine fracture, Horner's syndrome, liver laceration, skull fracture, open humerus fracture, small bowel serosal tear, and a brachial plexus injury. Definitive diagnosis was made using arteriography (6), computed tomography (CT) scan (2), and physical examination (2). The types of arterial injuries found included incomplete transection, complete transection with pseudo-aneurysm formation, traumatic arteriovenous (AV) fistulas, complete occlusion, and dissection. Repair was accomplished by hypogastric artery interposition or bypass grafting, synthetic grafting with polytetrafluoroethylene (PTFE), reverse saphenous vein grafting, or primary repair, depending on the circumstances. An AV fistula between the carotid artery and cavernous sinus was embolized. All grafts remained patent with exception of the aorto-renal bypass graft at follow-up ranging from 1 month to 3 years. The principles for repairing vascular injuries in children are slightly different than those in adults. Every effort should be made to use autogenous tissue such as the hypogastric artery or saphenous vein for repair if possible. If not, PTFE grafts can be used, although the long-term patency of these grafts in growing children is not known.

Accidental Falls↗
PubMedDate not supplied

CT-guided superior hypogastric plexus block.

PURPOSE: This study reports our experience with CT-guided block in the superior hypogastric plexus, using a single needle and anterior approach, in patients with pelvic cancer. METHOD: Ten patients with pelvic malignancy underwent CT-guided hypogastric neurolytic block with alcohol via an anterior approach. A solution of 10, 15, or 20 ml of alcohol, 4 ml of bupivacaine HCl, and 2 ml of contrast medium was injected. The results were evaluated based on pain relief, using a four-grade analogue scale. RESULTS: CT images always showed spread of solution around the iliac vessels. Pain relief was complete in four cases, moderate in two, mild in three, and none in one. Best results were observed with the largest amounts of alcohol. CONCLUSION: CT-guided percutaneous superior hypogastric block is a safe, relatively easy, and effective procedure in patients with severe pain from pelvic malignancies.

Aged↗
PubMed1990

[Mesenchymal extra-skeletal chondrosarcoma. Apropos of a case].

The authors report a case of extra-skeletal mesenchymal chondrosarcoma in a 22 year old man. This rare tumour developed along the nerve tracts (nerve roots, sciatic nerve and gluteal nerves) with contiguous involvement of muscles and three different bones (vertebra, sacrum, iliac bone). The nature of the tumour could only be determined by histological examination of a large fragment.

Adult↗
PubMed2003

The anatomy of midurethral slings and dynamics of neurovascular injury.

The aim of this study was to investigate the course of midurethral slings using tension-free vaginal tape. The TVT procedure was performed on six fresh pelves, measurements were obtained, and the structures were cross-referenced in 16 embalmed pelves. The midurethral sling enters the suburethral tissue 2.2-3 cm caudad to the internal urethral meatus, pierces the paraurethral musculature and vascular plexus, and exits 2+/-0.5 cm from the midline lateral to the point of insertion of the arcus tendineus fasciae pelvis. On the pubic tubercle the sling is 4+/-0.5 cm, 4+/-1 cm and 6+/-1 cm from the accessory obturator, the inferior epigastric and the external iliac vessels, respectively. The critical angle of error resulting in the external iliac vessel injury is 7-15 degrees. A current knowledge of pelvic anatomy may help the surgeon avoid the neural and vascular structures that are in the path of the sling.

Blood Vessels↗
PubMed1999

Anatomy of pelvic arteries adjacent to the sacrospinous ligament: importance of the coccygeal branch of the inferior gluteal artery.

OBJECTIVE: To describe the arterial vascular anatomy in the area of the sacrospinous ligament. METHODS: Cadaver pelvises were dissected to reveal the anatomy of the sacrospinous ligament with emphasis on vascular and neuroanatomy. Flexible rulers were used to measure the coccygeal branch in five hemipelvises. RESULTS: The pudendal vessels and nerve pass immediately medial and inferior to the ischial spine (within 0.5 cm of the spine) and behind the sacrospinous ligament. The pudendal artery lies anterior to the sacrotuberous ligament, which passes behind the ischial spine to its attachment at the posterior ischial tuberosity. The inferior gluteal artery originates from the posterior or the anterior branch of the internal iliac artery to pass behind the sciatic nerve and the sacrospinous ligament. There is a 3- to 5-mm window in which the inferior gluteal vessel is left uncovered above the top of the sacrospinous ligament and below the lower edge of the main body of the sciatic nerve plexus. The coccygeal branch of the inferior gluteal artery passes immediately behind the midportion of the sacrospinous ligament and pierces the sacrotuberous ligament in multiple sites. The main body of the inferior gluteal artery leaves the pelvis by passing posterior to the upper edge of the sacrospinous ligament and following the inferior portion of the sciatic nerve out of the greater sciatic foramen. CONCLUSION: Sutures placed through the sacrospinous ligament at least 2.5 cm from the ischial spine along the superior border of the sacrospinous ligament and without transgressing the entire thickness are in an area generally free of arterial vessels.

Arteries↗
PubMed1994

Hip fusion in young adults. Using a medial displacement osteotomy and cobra plate.

Eight consecutive patients, mean age 17.25 years, underwent a medial displacement osteotomy and hip arthrodesis with a nine-hole Cobra plate. A transverse innominate osteotomy facilitated medial displacement of the femoral head and acetabulum. Alignment of the lower limb at 25 degrees flexion, neutral abduction, and neutral rotation was assisted by a long-limbed protractor and Steinmann pins placed in both anterior superior iliac spines. The greater trochanter was reattached to the Cobra plate so that hip abductor function could be restored should the fusion ever be converted to an arthroplasty. No postoperative immobilization was required. All patients had radiographic evidence of union by 12 months. One patient had a postoperative brachial plexus neuropraxia that resolved at three months. One patient required an ipsilateral femoral lengthening for limb-length inequality secondary to collapse of his femoral head before hip fusion. At a mean follow-up interval of 2.8 years (range, one to 4.5 years), all patients had significant improvements in pain (p < 0.05), function (p < 0.01), and gait (p < 0.01). The average preoperative Harris Hip Score of 45 points +/- 8 points (mean +/- SEM) improved to 84 points +/- 2 points (p < 0.01).

Activities of Daily Living↗
PubMed1978

[Epidural systematic double-catheter venography in the diagnosis of lumbar disc herniation; mysterious vein in the vertebral canal (author's transl)].

Epidural venography should be regarded as a very accurate, relatively simple method of demonstrating disc herniations in the lumbar region. This procedure is especially recommendable in cases that are clinically suspect but have a negative or dubious myelogram. Systematic double-catheter venography has to be considered as an important addition to the existing diagnostic procedures for lumbar disc disease, especially when the more conventional methods have failed. This method should be considered at least as reliable as myelography, and even more reliable in the diagnosis of lateral disc herniations. However, small midline herniations may be missed. In some cases it is possible to detect a trapped root, not caused by a disc herniation. In our experience in 120 cases, systematic use of 2 catheters and simultaneous injection of contrast provides excellent, homogenous visualisation of the epidural venous plexus and surrounding veins. The reliability of the X-rays is definitely superior to the single catheter method. The Seldinger technique is used; the approach is via the right and left femoral vein. The cathetertips are selectively introduced from both sides either into a lateral sacral vein, an internal iliac vein or into a lumbar ascending vein. This can be performed as well on the homolateral or on the heterolateral side. This results in six possibilities from each groin, providing a fairly large number of procedures to obtain adequate filling of the epidural and surrounding veins. The position of choice of the cathetertip(s) can vary during the examination, dependent on diagnostic problems or technical catheterisation problems. The risk of complications is very small. It is possible to perform the examination on outpatients. The adequate demonstration of the epidural veins enables us to visualise frequently a small straight vein in the midline of the vertebral canal, that is unknown in the anatomical literature until now.

Epidural Space↗
PubMed1981

[Potency disorders following aorto-bifemoral bypass prosthesis].

The sexual potency of 170 patients treated for obstructions of the pelvic arteries by implantation of an aortobifemoral dacron graft was investigated 2--4 years after the operation. About half of these patients reported preoperative sexual disorder. Postoperatively, 60% of those capable of cohabitation prior to the operation developed either new or further sexual dysfunction. A lasting normalization of potency was reported by 12 patients, a transitory improvement by 4 others. Avoiding damage to the preaortal sympathetic plexus led to a decrease in the rate of isolated disorder in ejaculation from 15% to 1%, but not, however, to a lower frequency of potency disturbance in general. The evaluation of 142 informative preoperative angiograms showed a clear dependence of preoperative potency on the orthograde perfusion of the internal iliac artery. Similarly, the postoperative changes in potency correlated with the angiographically expected improvement or worsening of the interna-poerfusion by retrograde blood flow. It therefore seems possible to decrease the occurrence of postoperative potency disorders by the additional revascularization of the internal iliac artery in certain patients.

Adult↗
PubMed2003

Anatomy of ilioinguinal and iliohypogastric nerves in relation to trocar placement and low transverse incisions.

OBJECTIVE: The purpose of this study was to map the course of the ilioinguinal and iliohypogastric nerves. STUDY DESIGN: The courses of iliohypogastric and ilioinguinal nerves from 11 fresh frozen cadavers were mapped from their lateral emergence on the anterior abdominal wall to their midline termination in reference to fixed bony landmarks. Bivariate fit ellipses were generated for each nerve and compared with sites of standard abdominal surgical incisions. RESULTS: Thirteen iliohypogastric and 16 ilioinguinal nerves were identified and mapped. On average, the proximal end of the ilioinguinal nerve entered the abdominal wall 3.1 cm medial and 3.7 cm inferior to the anterior superior iliac spine, then followed a linear course to terminate 2.7 cm lateral to the midline and 1.7 cm superior to pubic symphysis. The iliohypogastric nerve entered the abdominal wall on average 2.1 cm medial and 0.9 cm inferior to the anterior superior iliac spine, which followed a linear course to terminate 3.7 cm lateral to the midline and 5.2 cm superior to pubic symphysis. CONCLUSION: Abdominal wall surgical sites below the level of the anterior superior iliac spine have the potential for ilioinguinal or iliohypogastric injury.

Abdominal Wall↗