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PubMed2004

Endoscopic renal evaluation and biopsy of Chelonia.

Sixty-nine tortoises, turtles and terrapins representing 28 species of the order Chelonia, class Reptilia were evaluated by endoscopy for renal disease. Under general anaesthesia, coelomic and/or extracoelomic endoscopic evaluations and biopsies of the kidney(s) were undertaken. Endoscopic approaches required a 2 to 4 mm skin incision in the prefemoral fossa, and minimal blunt dissection through the subcutaneous tissues. For the coelomic approach the coelomic aponeurosis of the transverse and oblique abdominal muscles was penetrated so that the cranioventral kidney(s) could be examined and biopsied. The extracoelomic approach required the endoscope to be advanced in a caudodorsal direction, between the coelomic aponeurosis and the broad iliacus muscle, so that the dorsolateral kidney(s) could be examined and biopsied. Both techniques were safe and effective for obtaining renal biopsies for histological examination and microbiological culture. Several renal pathologies were identified including glomerulonephrosis, tubulonephrosis, interstitial nephritis, uric acid accumulation, tubulonephritis, glomerulonephritis, renal oedema, glomerulosclerosis, nephrosclerosis, soft tissue mineralisation, and pyelonephritis. Several infectious conditions were identified, including a predominance of Gram-negative bacterial infections, two cases of hexamitiosis, and one case of mycobacteriosis.

Animal Diseases↗
PubMed1999

Psoas major and its controversial rotational action.

The action of psoas major muscle as a primary flexor of the hip joint is undisputed. However it is also variably reported as being a medial and a lateral rotator of the femur at the hip joint. The psoas and iliacus muscles, along with their common insertion, were isolated by dissection in six adult cadaveric specimens. The action of psoas muscle was assessed by pulling the muscle along its long axis and then observing the effects on rotation of the femur, with a visual estimation of the rotation in degrees. The experiment was repeated with the hip joint capsule removed. In the anatomical position, applied traction along the long axis of the muscle produced hip flexion with no rotational component. With the hip in the abducted position, traction produced flexion, adduction, and lateral rotation of the femur at the hip joint. In adduction of the hip, traction on psoas produced only flexion at the hip joint, with no rotation. In maximal flexion, traction also produced adduction. The results were unaffected by the removal of the joint capsule.

Aged↗
PubMed2001

Iliacus hematoma and femoral nerve palsy after revision hip arthroplasty: a case report.

Femoral nerve palsy occurred in a 65-year-old man after he had undergone a revision total hip arthroplasty using cementless components. The magnetic resonance imaging scan showed a mass in the iliacus muscle. The mass showed increased signal intensity on T1-weighted and T2-weighted spin-echo images and contained linear septa and a nodule. The gadolinium-enhanced T1-weighted image showed a rim of significant enhancement in the nodule. The findings of magnetic resonance images were suggestive of iliacus hematoma and of liposarcoma. The patient underwent surgery, and the mass was identified as an iliacus hematoma. The femoral nerve was stretched by the hematoma. After removal of the hematoma, the nerve palsy was improved completely. Iliacus hematoma may occur after total hip arthroplasty, even without anticoagulant therapy. The hematoma might appear to be a liposarcoma on magnetic resonance imaging scans.

Aged↗
PubMed2003

A clinical case and anatomical study of the innervation supply of the vastus medialis muscle.

The innervation supply to the vastus medialis (VM) muscle, a component of quadriceps femoris (QF), is provided by a branch of the femoral nerve (FN) running along the muscle. The course of the nerve from lumbar roots to the muscle has been described by many researchers. It is known to ride along the femoral vein, artery and saphenous nerve and enter the adductor canal (Hunter's canal), and then to divide into branches that supply vastus medialis and the knee joint. Femoral mononeuropathy is uncommon, and is usually due to compression in the spinal level. Hematoma in the psoas and iliacus muscles, drug abuse, lithotomy position and limb lengthening are the other associated reasons for a mononeuropathy of the femoral nerve. Isolated vastus lateralis (VL) atrophies have been reported by a few authors, suggesting that compression of the nerve and direct violation of the nerve with injections might be the reason for mononeuropathy. Isolated VM atrophy has not been previously reported. The purpose of the study was to identify the anatomical structures around the FN branch which innervates the VM muscle.

Adolescent↗
PubMed2000

Pyomyositis in a 5-year-old child.

We present a case of pyomyositis in an otherwise healthy 5-year-old child that underscores the potential for serious, life-threatening complications. Pyomyositis of the gluteal, psoas, and iliacus muscles was associated with osteomyelitis, septic arthritis, a large inferior vena cava thrombus, septic pulmonary emboli, and eventual pneumonia. Primary pyomyositis is a purulent infection of striated muscle thought to be caused by seeding from a transient bacteremia. The focal infection typically forms an abscess that generally responds to intravenous antibiotics and occasionally requires adjunctive computed tomography-guided aspiration and drainage. This localized infectious process rarely produces further sequelae unless treatment is delayed. Pyomyositis is rare in healthy individuals and requires a high clinical suspicion in patients who present with fever, leukocytosis, and localized pain.

Abscess↗
PubMed1992

Graded compression sonography of abdominal neoplasms mimicking acute appendicitis.

Over a 3-year period nine patients (mean age of 43 years) with acute abdominal pain and unsuspected abdominal neoplasms were referred for graded compression sonography to rule out appendicitis. Six of the nine patients had right lower quadrant neoplasms involving the cecum, terminal ileum, iliacus muscle, or iliac lymph nodes. However, in three patients neoplasm was noted outside the right iliac fossa involving the liver, right kidney, and upper abdominal mesentery. This study underscores the fact that in patients without sonographic evidence of acute appendicitis, a survey of the upper abdomen and right flank should routinely be performed in addition to scanning the right iliac fossa and pelvis. In patients more than 50 years of age neoplasm must also be kept in mind in the differential diagnosis of appendicitis.

Abdominal Neoplasms↗
PubMed2000

Endoscopic resection of a pelvic neurogenic tumor through the retroperitoneal approach.

A pelvic neurogenic tumor resected endoscopically through the retroperitoneal approach is described. Close examination of a 62-year-old man who complained of dull pain in the lower abdomen revealed a tumor on the posterior surface of the iliacus muscle. The tumor was extracted endoscopically without the need for a laparotomy. This procedure involves a less invasive approach that may be useful for benign retroperitoneal pelvic tumors.

Endoscopy↗
PubMed1995

Femoral nerve "sheath" for inguinal paravascular lumbar plexus block is not found in human cadavers.

STUDY OBJECTIVE: To determine if a femoral nerve sheath capable of conveying local anesthetic to the lumbar plexus and the obturator nerve exists in human cadavers. DESIGN: Injection of methylene blue dye into the femoral nerves of human cadavers followed by dissection and observation of dye distribution. SETTING: University medical center pathology department autopsy room. PATIENTS: Six fresh adult cadavers about to undergo postmortem examination. INTERVENTIONS: Both femoral nerves of six fresh cadavers were injected with either 20 ml or 40 ml of dye. The abdomen was opened and distribution of the dye was observed. MEASUREMENTS AND MAIN RESULTS: In all of the cadavers studied there was no evidence of a femoral nerve sheath capable of conveying methylene blue dye to the lumbar plexus. Both 20 ml and 40 ml of dye injected into the femoral nerve failed to reach the lumbar plexus or the obturator nerve. When 40 ml of dye was injected it always stained the femoral nerves, it usually stained the lateral femoral cutaneous nerves, but it never stained the obturator nerves. CONCLUSIONS: A femoral nerve sheath capable of conveying a solution to the cadaver lumbar plexus does not exist in human cadavers. Dye injected into the cadaver femoral nerve does not reach either the lumbar plexus or the obturator nerve. When 40 ml of methylene blue dye is injected into the cadaver femoral nerve, some dye usually diffuses under the iliacus muscle fascia to the lateral femoral cutaneous nerve. This study indicates that in patients the "3-in-1 block" always blocks the femoral nerve, it usually blocks the lateral femoral cutaneous nerve, but it probably does not block the lumbar plexus or the obturator nerve.

Adult↗
PubMed1979

Urologic manifestations of the iliacus hematoma syndrome.

Anticoagulated patients may have a characteristic syndrome of femoral neuropathy from an iliacus muscle hematoma. They may present with urologic signs and symptoms, including groin, flank and thigh pain, groin tenderness, an iliac fossa mass and hematuria. Urography may reveal an enlarged psoas shadow and hydronephrosis from ureteral obstruction. Prompt diagnosis is essential so that early operative decompression of the femoral nerve can be done. The urologist has an important role in the diagnosis and treatment of this syndrome.

Adult↗
PubMed2002

An anatomical study of vascularized iliac bone grafts for dental implantation.

PURPOSE: The purpose of this study was to clarify the anatomical features of vascularized iliac bone grafts used for mandibular reconstruction and dental implantation. MATERIAL AND METHOD: Twenty-six cadavers were dissected to examine vessels and areas of iliac bone that could be used as pedicles and grafts. The length and diameter of vessels of the vascular pedicle were determined, and the length and depths of the iliac bone were measured with respect to points determined by the relative dimensions of the bone. RESULTS: The deep circumflex iliac arteries were classified as double nutrient type (75%), iliac-crest type (19%), or iliacus-muscle type (6%). The mean arterial length was 64+/-15 mm in the double nutrient type. The mean internal diameters at the origin of the deep circumflex iliac artery and vein that could be used for anastomosis were 1.7+/-0.4 mm and 2.1+/-0.7 mm respectively. The greatest mean cross-sectional width and height were 18+/-3 and 42+/-5 mm respectively. The greatest mean cross-sectional cortical thickness at the intermediate line of the iliac crest was 3.4+/-0.8 mm. CONCLUSION: These results should be useful in designing bone grafts for mandibular reconstruction followed by dental implantation.

Anastomosis, Surgical↗
PubMed1975

Iliacus hematoma syndrome.

In a patient receiving warfarin and heparin in the treatment of pulmonary embolism, a hematoma developed in the iliacus muscle, compressing the overlying femoral nerve. Femoral nerve paralysis ensued, causing inability to walk, pain and loss of sensation in the sensory distribution of the nerve. Surgical intervention and removal of the hematoma relieved the nerve compression and the condition gradually improved.

Adult↗
PubMed2000

Psoas compartment block.

The psoas compartment acts as a conduit for the nerve roots of the lumbar plexus. Originating at approximately the 12th thoracic vertebrae, this potential compartment continues on caudally, bordered posterolaterally by fascia of the quadratus lumborum and iliacus muscles, medially by the fascia of the psoas major muscle, and anteriorly by the transversalis fascia. This natural "gutter" acts as a repository for local anesthetic agents and provides an excellent method of unilateral anterior lower extremity anesthesia. After elicitation of a motor evoked response in the muscles of the anterior thigh, 30 to 40 milliliters of local anesthetic is incrementally injected into the compartment. Spread of the anesthetic to all roots of the plexus occurs in 15 to 20 minutes. Profound sensory and motor blockade can be achieved providing surgical anesthesia as well as long duration postoperative pain relief.

Humans↗
PubMed1977

Femoral neuropathy associated with anticoagulant therapy.

The English literature concerning femoral neuropathy associated with anticoagulant therapy is reviewed. Anatomical dissections were carried out in order to determine how the neuropathy might be produced. It is postulated that hemorrhage occurs within the iliacus muscle and that a pressure neuropathy of the femoral nerve ensues. Conservative management is recommended. The condition is probably more prevalent than previously thought, as evidenced by the fact that two cases were diagnosed in as many years by one orthopedic surgeon in a 300-bed general hospital.

Anticoagulants↗
PubMed1979

Neurological complications of anticoagulation therapy: a neurologist's review.

Anticoagulant-induced bleeding may involve the brain, spinal cord, or peripheral nerves. It may occur with either coumarin or heparin anticoagulants, in the absence of trauma, and while prothrombin times, clotting times, or partial thromboplastin times are in accepted therapeutic ranges. Bleeding involving the brain occurs usually as a subdural hematoma, with intracerebral or subarachnoid hemorrhages occurring less frequently. There may be diagnostic problems in the recognition of these anticoagulant-related subdural hematomas. The spinal cord involvement usually appears in the form of an extradural hematoma. This condition can progress rapidly, and prompt recognition of its presence, localization with myelography, and laminectomy for surgical evacuation are necessary. The peripheral nerve most frequently compressed is the femoral nerve, due to bleeding into the iliacus muscle. Other nerves can be involved, and surgical evacuation may be necessary at times.

Anticoagulants↗
PubMed1985

[Hematoma of the psoas. Comparative diagnostic contributions of ultrasonography and x-ray computed tomography].

A 11 cases study of hematoma of the iliacus muscle underlines better results obtained by C.T. Scanner compared to those of ultrasonography examination in term of definite diagnoses. Comparison of density values and repeated examination were useful to assert diagnosis and to appreciate the course of the illness. Only C.T. Scanner was able to show which portion of the muscle was concerned. Authors correlated the C.T. Scanner results to the nature of the entrapment neuropathy clinically found: an isolated femoral nerve palsy or association with an obturator nerve dysfunction.

Adult↗
PubMed1979

CT scan of retroperitoneal hematoma with neuropathy.

A hematoma in the left iliacus muscle induced by anticoagulant therapy and causing a femoral neuropathy was demonstrated by CT scan. The scan returned to normal after the surgical evacuation of the hematoma. Other possible uses of the CT scan to demonstrate neurological lesions in this region are discussed.

Anticoagulants↗