Thank you for your answer, it was news to me.
Jason
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> From: Chung-hwi Yi <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: ultrasound over epiphyseal plates, synovial shelf syndrome
> Date: Monday, September 28, 1998 9:44 PM
>
> Dear Ruth,
>
> I would like to suggest that you should read the book titled "Physical
> Agents: Theroy and Practice for the Physical Therapist Assistant. page
> 105. The authors, Barbara J Behrens and Susan L Michlovitz, say
>
> The contraindication to treatment over epiphyseal plates in children
> has been passed on as part of the tradition of ultrasound. These plates
> give rise to new bone cells. The original work that gave rise to concern
> was done on legs of dogs at very low frequency (0.8 MHz) and high
> intensity (0.5 - 3.0 W/cm2 SA) using a stationary transducer. These
> characteristics would have caused high absorption and intense heating of
> bone. Subsequent work on animal bone by Dyson and others suggests that
> healing fractures in fact that benefit from ultrasound at low dose. In
> view of the adverse treatment characteristics of the early work and
> advantages found in recent work, treatment over epiphyseal plates in
> children is not considered a contraindication at the present time. It is
> suggested that low treatment intensity be used and that the course of
> treatment should not be prolonged.
>
> In another book titled Thermal Agents in Rehabilitation, written by
> Susan L. Micholovitz, page 164.
> Epiphysial areas (growth areas of bone) in children should be exposed
> to ultrasound only minimally. Literature in the field suggests that
> intensities used therapeutically would be safe. But at intensities
> greater than 3.0 W/cm2, there is some evidence of demineralization of
> bone, damage to epiphyseal plates, and retardation of bone growth when
> using a stationary transducer for periods of 3 minutes or more. There
> are no reasons to avoid ultrasound application over fracture sites,
> unless sensation to the area is impaired. In fact, recent animal studies
> by Dyson and Brookes have demonstrated that pulsed ultrasound may
> accelerate fracture healing. Certainly, this subject warrants further
> investigation.
>
> I hope this helps.
> Sincerely,
>
> hal berda wrote:
> >
> > Hello,
> > What do you think to the use of ultrasound over epiphyseal plates in
the
> > under 16's? How about over fractured calcaneums??? in adults.
> >
> > We are having some disagreements with our consultants at present.
> >
> > Thanks
> > Ruth.
>
> --
> Chung-hwi Yi, Ph.D., PT, Associate professor, Chairperson, Dept. of
> Rehabilitation Therapy,
> College of Health Science, Yonsei University#234 Hungob-myun, Wonju
> City, Kangwon-do, Republic of Korea
> 220-710 Tel: 82-371-760-2429, Fax: 82-371-760-2496 email:
> [log in to unmask]
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