Muscle volumes of the gluteus medius, gluteus maximus, and tensor faciae latae assessed by a computed tomography (CT) scan were greater in men than women and not different between the left and the right side after total hip arthroplasty (THA). Body mass index, sex, age, and ambulatory status affected functional outcome after THA. However, the effects of psoas muscle mass and muscle quality on f...

The psoas hematoma is a rare complication of the anticoagulation therapy. It cause abdominal or lumbar pain, muscle dysfunction and sometimes nerve palsy. The optimal treatment is not well established, surgery or conservative treatment? We report here a case of psoas hematoma revealed by a lower limb palsy.

We present a 49 year old man who presented to the emergency department with severe lower back pain of 5 days duration. One week prior he had been diagnosed with a right psoas muscle abscess and was discharged with a 28 day course of moxifloxacin after the preliminary culture from the psoas grew an anaerobic organism. MRI of the lumbar spine showed marrow edema in the L2 body, occupying most of ...

Psoas abscess (PA) is encountered infrequently in children. Pyogenic psoas abscess is most commonly a primary process associated with Staphylococcus aureus in children. Herein we present a female adolescent of secondary psoas abscess associated with ruptured retrocecal appendicitis, and it was successfully treated by broadspectrum antibiotics and prompt surgical intervention. The patient was a ...

The authors present a rare case of tuberculous spondylitis and a large abscess in the left psoas muscle that occurred after spinal surgery for an acute traumatic burst fracture of the L2 vertebral body. We retrospectively reviewed the patient's first magnetic resonance imaging (MRI) we found that some unusual findings, indicative of psoas abscess had been overlooked. As a result, diagnosis and ...

BACKGROUND Acute transverse myelitis is uncommon and presumably results from an autoimmune process or a preceding infection. Most cases of bacterial myelitis are due to hematogenous dissemination from urinary or respiratory tract infections or contiguous spreading from a neighboring infected structure. A psoas abscess rarely spreads to higher levels of the spinal cord. No cases of acute cervica...

The quantity and molar ratio of the three troponin subunits to actin were determined in rabbit psoas muscle, muscle homogenates (800 X g pellet), and purified myofibrils. Proteins were separated by polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. The quantities of the separated proteins were determined directly from the gel slices by amino acid analysis after correc...

Malignant fibrous histiocytoma is one of the most common sarcomas that occur in soft tissue, it usually develops in old age individuals and the incidence is similar between the genders. We report here on a case with invasive local recurrence after surgical resection of a malignant fibrous histiocytoma that occurred in the left psoas muscle of a 69-year-old male patient. The patient was first ad...

Our motivation was to provide an automatic tool for radiologists and orthopedic surgeons for improving the quality of life of an aging population. We propose a method for generating a shape model and a fully automated segmenting scheme for the psoas major muscle in X-ray CT images by using the shape model. Our approach consists of two steps: (1) The generation of a shape model and its applicati...

Anesthetizing the lumbar plexus at its origin facilitates a more "complete" psoas compartment block compared to peripheral approaches. It is usually performed using surface anatomical landmarks, and the site for local anesthetic injection is confirmed by observing quadriceps muscle contraction to peripheral nerve stimulation. Ultrasound may provide guidance alone or together with the aid of ner...