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At least 1,387 records · Page 77Linked to original sources
PubMed1997

Extradigital glomus tumour causing thigh pain: a case report.

Glomus tumours are rare and benign, arising from a neuromyoarterial glomus body, most commonly in the hand. We report a patient with such a tumour in an atypical site, the right vastus lateralis. Pain was aggravated by muscle contraction, and ultrasonography and MRI were required to locate the lesion accurately. Surgical excision gave immediate pain relief.

Adult↗
PubMed2005

Subcutaneous thigh fat necrosis as a result of tourniquet control during total knee arthroplasty.

The use of a pneumatic tourniquet in total knee arthroplasty has been linked to complications caused by local tissue hypoxia. Fat necrosis is a rare condition that presents as an ill-defined subcutaneous lesion. The clinical features resemble that of a lipoma but histological appearance is characteristic. Ultrasound imaging is helpful in establishing the diagnosis both by sonographic appearance as well as in directing a biopsy if necessary. We present a case of encapsulated fat necrosis caused by the use of a pneumatic tourniquet during total knee arthroplasty.

Aged, 80 and over↗
PubMed2000

Recurrent posterior thigh symptoms detrimental to performance in rugby union: predisposing factors.

Recurrent hamstring injury is a very common problem in rugby union, but has been largely ignored in the literature. It is concluded that a multifactorial aetiology may be present, and that these symptoms may be part of a continuum of symptoms that may lead to more serious injuries. Effective management needs to focus not just locally, but include proximal issues such as lumbo-pelvic stability and correcting lumbar spine dysfunction. The factors addressed in a prevention programme are likely to contribute to performance gains.

Biomechanical Phenomena↗
PubMed2005

Alterations in the rheological flow profile in conduit femoral artery during rhythmic thigh muscle contractions in humans.

The present study examined the rheological blood velocity profile in the conduit femoral artery during rhythmic muscle contractions at different muscle forces. Eight healthy volunteers performed one-legged, dynamic knee-extensor exercise at work rates of 5, 10, 20, 30, and 40 W at 60 contractions per minute. The time and space-averaged, amplitude-weighted mean (V(mean)) and maximum (V(max)) blood flow velocities in the common femoral artery were measured during the cardiosystolic phase (CSP) and cardiodiastolic phase (CDP) by the Doppler ultrasound technique. The V(max)/V(mean) ratio was used as a flow profile index, in which a ratio of approximately 1 indicates a "flat velocity flow profile" and a ratio significantly >1 indicates a "parabolic velocity flow profile." At rest, the V(max)/V(mean) ratio was approximately 1.3 and approximately 1.8 during the CSP and CDP, respectively. The V(max)/V(mean) ratio was higher (p < 0.01) during the CDP than during the CSP, both at rest and at all work rates. The V(max)/V(mean) ratio during the CSP was higher (p < 0.01) at 30 and 40 W compared to at rest. The V(max)/V(mean) ratio during the CDP was lower (p < 0.05) at 5 and 10 W compared to at rest. There was a positive linear correlation between blood flow and incremental work rates during both the CSP and CDP, respectively. Thus under resting conditions, the findings indicate a "steeper" parabolic velocity profile during the CDP than during the CSP. The velocity profile during the CDP furthermore shifts to being less "steep" during rhythmic muscle contractions at lower intensities, but to being reelevated and normalized as at rest during higher intensities. The "steepness" of the parabolic velocity profile observed during the CSP at rest increased during muscle contraction at higher intensities. In conclusion, the blood velocity in the common femoral artery is parabolic both at rest and during exercise for both the CSP and CDP, indicating the persistence of laminar flow. The occurrence of any temporary slight disturbance or turbulence in the flow at the sight of measurement in the common femoral artery does consequently not induce a persisting "disturbed" and fully flat "plug-like" velocity profile. Instead, the "steepness" of the parabolic velocity profile is only slightly modified, whereby blood flow is not impaired. Thus the blood velocity profile, besides being influenced by the muscle contraction-relaxation induced mechanical "impedance," seems also to be modulated by the cardiac- and blood pressure-phases, consequently influencing the exercise blood flow response.

Adult↗