Response to kyphosis question

Donald E. Katz, C.O.
0100,0100,0100(Please forgive my original post attempting to “paste” a powerpoint

presentation outline text. It apparently didn’t work. Here’s my

response again, but in a more basic (readable) text format. I hope

this transmits with much less break in formatting!)

***************************************************************

In response to your question, I recently did a literature search and

review on the Orthotic treatment of kyphosis. (This was for our

Academy’s Pediatric Certificate Program, to which my subject was

the management of the pediatric and adolescent spine.) If you don’t

mind the brevity, I thought the easiest way to respond to your

questions would be to simply provide you a copy of the outline

format of my power point slides. I hope you find this helpful, and

please don’t hesitate to contact me if you have any questions

about my post.

Kyphosis

Differential Diagnoses

I. Juvenile Roundback: > 45 degrees without vertebral

wedging.

II. Scheuermann’s Kyphosis: More rigid kyphosis 45

degrees with vertebral wedging; some suggest > 5 degrees in three

or more adjacent vertebrae.

Scheuermann’s Kyphosis

Etiology: Schmorl’s disc herniations into the cartilaginous

end plate. Interruption of endochondral ossification, leading to

anterior wedging and increasing kyphosis.

Typical presentation around age 10.

Marked increase in kyphosis upon forward bending.

Common apex between T7 and T9, but thoracolumbar and

lumbar disease exists.

Often pectoral muscle contractures.

Indications for Treatment

Skeletal immaturity (Risser 0 to 3).

Curves between 50 and 70 degrees, with passive flexibility

of no less than 40%.

Vertebral wedging in fewer than three vertebrae.

Treatment Goals

Correct kyphosis to an acceptable magnitude:

leftOne report maintains no more than 60 degrees

required to have a positive prognostic outcome

throughout adulthood.

Achieved by maintaining correction of curve up to the time

of skeletal maturity.

left40 – 50% correction of initial deformity by

treatment end to make up for increasing curvature

with follow-up.

Corrective Forces with an Orthosis

Orthotic Treatment

Milwaukee most studied orthosis: Correction is thought to

be partly active in nature, with patient reacting to throatmold.

leftSome reports suggest TLSO is as successful for

apices of T9 or below; one report proporting 70

degrees to be a threshold for low-profile

consideration. leftFirst 12 – 18 months full-time wear (22 hrs./day); some

reports suggest 8 – 12 months to be sufficient.

Part-time (night wear) until skeletal maturity.

leftBrace Discontinuation left Decreased vertebral wedging and kyphosis

correction imperative. left Follow-up studies show loss of correction from 15

to 20 degrees. leftTherefore, an out of brace kyphosis of around 30 to 35

degrees at maturity should result in an acceptable curve of

around 50 degrees in adulthood.

 

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