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Results for “Leg Injuries”

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At least 379 records · Page 21Linked to original sources
PubMed2004

Three-MHz Ultrasound Heats Deeper Into the Tissues Than Originally Theorized.

OBJECTIVE: To measure muscle temperature of ultrasound at 1-MHz and 3-MHz frequencies at a depth of 2.5 cm and to compare treatment durations for vigorous heating (increase of 4 degrees C) and for heating to 40 degrees C. DESIGN AND SETTING: A counterbalanced, repeated-measures design with 1 fixed, independent variable, 1.5-W/cm(2) ultrasound treatment (1 MHz, 3 MHz, or control [sham]) using a Theratouch 7.7 ultrasound device. Dependent variables were end-treatment temperature at 2.5 cm, time to vigorous heating, and time to reach 40 degrees C. SUBJECTS: Eighteen healthy volunteers (age = 24.6 +/- 2.3 years, height = 173.0 +/- 9.7 cm, mass = 72.0 +/- 16.3 kg) without a history of lower leg injury. MEASUREMENTS: The medial triceps surae intramuscular temperature at 2.5 cm was measured every 10 seconds using an implantable thermocouple. Each of the 3 ultrasound frequencies was applied in counterbalanced order at 24-hour intervals. RESULTS: Ultrasound of 3 MHz produced both vigorous heating (at 3.4 minutes) and an absolute temperature of 40 degrees C (at 4 minutes). CONCLUSIONS: Our results suggest that 3-MHz ultrasound heats 0.5 cm deeper than suggested by others. With our machine, 3-MHz ultrasound was more effective in heating muscle at this depth than 1-MHz ultrasound.

Journal Article↗
PubMed2004

[A mathematical model of determining the knee joint injury].

A mathematical model of determining the injury of human knee joint was established by using structural dynamics method. The results showvered the corresponding shearing displacement and bending angle of the knee joint on the occasion of ligament avulsion, and the shearing force and bending moment which caused tibial condylar fractures under purest shearing and bending condition. The calculated results consisted with the experimental results greatly, suggesting that using mathematical method to determine the injury is feasible and this kind of method can do good to lots of subjects, such as pedestrian protection, athletic medicine and rehabilitation engineering.

Humans↗
PubMed1997

The effects of spatting and ankle taping on inversion before and after exercise.

OBJECTIVE: To compare the effects of spatting, taping and spatting, taping, and not taping on the amount and rate of inversion of the ankle before and after exercise. DESIGN AND SETTING: We filmed subjects at 60 Hz while they stood on a platform that suddenly inverted the right ankle. Five trials were measured before and after a 30-minute period of drills. SUBJECTS: We tested 15 male rugby players with no history of lower-leg injury within the previous 6 months limiting activity for more than 2 days. MEASUREMENTS: The amount and rate of inversion in the four conditions were digitized and analyzed. RESULTS: The combination of spatting and taping was the most effective in reducing inversion rate and range of motion before and after exercise. CONCLUSIONS: All three taping treatments were effective in reducing the amount and rate of inversion. Exercise loosened the tape, but there may be a functional restriction of the amount and rate of inversion after exercise.

Journal Article↗
PubMed2000

Effects of high-top and low-top shoes on ankle inversion.

OBJECTIVE: To determine the differences in the rate and amount of ankle inversion in subjects wearing high-top and low-top shoes. DESIGN AND SETTING: Subjects were filmed at 60 Hz while on an inversion platform that suddenly inverted the right ankle 35 degrees . We measured 5 trials of sudden inversion for each subject in high-top and low-top shoes. SUBJECTS: Twenty male subjects with no history of lower leg injury within the previous 6 months. MEASUREMENTS: We measured ankle inversion using video motion analysis techniques at 60 Hz. A2 x 5 factorial repeated- measures analysis of variance was used to test for significant differences in the amount of inversion, average rate of inversion, and maximum rate of inversion. RESULTS: The high-top shoes significantly reduced the amount and rate of inversion. The high-top shoes reduced the amount of inversion by 4.5 degrees , the maximum rate of inversion by 100.1 degrees /s, and the average rate of inversion by 73.0 degrees /s. CONCLUSIONS: The high-top shoes were more effective in reducing the amount and rate of inversion than the low-top shoes. Depending upon the loading conditions, high-top shoes may help prevent some ankle sprains.

Journal Article↗
PubMed1977

Essential facets of radiological diagnosis of extremity trauma.

Trauma to the extremities is sometimes dismissed as relatively unimportant in certain radiologic circles. In many instances, radiologic responsibility is denied and relegated to the orthopedist. Although the radiologic manifestations of much trauma to the extremities is clear cut and does not require sophisticated techniques or interpretation, there are many diagnoses which require innovative techniques and a knowledge of mechanisms of injury as well as the subtle oseous and soft tissue manifestations which may be confronted radiologically. The above factors will be stressed along with the need for the fundamental knowledge of radiologic anatomy which is required in order to appreciate some of the more subtle changes of extremity trauma.

Ankle Injuries↗
PubMedDate not supplied

[Endogenous opioid mechanisms in the regulation of pain sensitivity and behavioral reactivity in various aversive states].

Study of the effect of naloxone that blocks opiate receptors on changes in thresholds of vocalization and latent periods of motile reaction in freely-behaving rats, at leg injury, intraperitoneal introduction of algogene, and at immobilization stress allowed to estimate the involvement of endogenous opiates in regulation of pain sensitivity and motile activity. Naloxone-weakened inhibition of vocalization is accompanied by the increase in inhibition of motile responses, characteristic for visceral pain and the absence of changes at trauma and immobilization stress suggest that opiates are involved in formation of endogenous analgesia at strong visceral pain stimulation.

Animals↗
PubMed1990

[Lower leg lengthening using the Ilizarov system. Presentation of the various surgical techniques and analysis of lower leg lengthening procedures performed 1986-1989].

The technique of lengthening the tibia with the Ilisarov device is explained. Different variations (bifocal or simultaneous) of the method are demonstrated, as well as the results of 53 cases of tibia lengthening in 37 patients of our hospital between 1986 and 1989. In 14 patients, a second operative procedure was necessary during treatment. In no case was internal fixation or grafting necessary. The Ilisarov ring fixator is very efficient, especially in major lengthening procedures and for simultaneous correction of deformities.

Achondroplasia↗
PubMed1989

Limb-threatening injuries in sport.

It is the closed gross deformity of the knee with vascular compromise that most commonly leads to amputation. This algorithm is offered as an approach to this problem with great medical and legal ramifications. Compartment syndrome about the elbow and foot can be avoided if the signs and symptoms are recognized and the fascial compartments released.

Athletic Injuries↗
PubMed1989

Dinghy sailing.

Sailors often have to hang outside the dinghy to hold it upright and so gain maximum speed. This puts immense strain on the knees and can lead to imbalance between the medial and lateral quadriceps leading to pain. Treatment is easy--if you know the correct exercises.

Athletic Injuries↗
PubMed1989

Open joint injuries. Classification and treatment.

Experience with wounds involving the major joints of the lower extremity suggests that the extracapsular soft tissues and the intracapsular structures should be considered individually to assess accurately the magnitude of injury and to provide a prognosis. A classification scheme is proposed to characterize the areas and types of injury. Type I open joint injuries are single penetrations without extensive soft-tissue damage, permitting uncomplicated joint and wound closure. Type II injuries are single or multiple penetrations with extensive soft-tissue disruptions (flaps, avulsions, degloving), often requiring secondary operations to attain closure. Type III injuries are open periarticular fractures with extension through the adjacent intraarticular surface. Type IV injuries are open dislocations or those with associated nerve or vascular injury requiring repair. The extent of intraarticular injury further subdivides Types I, II, and III. The prognosis for functional impairment correlates with the severity of injury. The cornerstones for successful management are debridement, antibiotic therapy, properly timed and performed joint closure, and aggressive treatment of the associated bony injury.

Adult↗
PubMed1985

End stage running problems.

What is the problem of a runner who is not recovering? It may be that the diagnosis is incorrect or that the treatment is improper. This article reviews uncommon problems of the lower extremities that may provide the answer.

Athletic Injuries↗