Eleven patients with active unicameral bone cysts were treated primarily with placement of demineralized bone matrix in the cyst by using a two-needle technique and a custom large-bore needle. Cyst healing was rated according to the Neer classification, and the average time of healing was 4.5 months. The demineralized bone matrix demonstrated an ability to obliterate the cyst in nine of 11 patients by using a single injection within 4-5 months, and at 2 years' follow-up, no cysts were deemed active or recurrent.
Inadvertent cast-saw burns are attributable to inadequately padded casts, improper technique, or uncooperative patients. Cast-saw blade temperatures recorded while splitting plaster and fiberglass casts are elevated to a degree that would increase the risk of a second- or third-degree burn. Using standardized plaster and fiberglass cast models, this study attempted to determine whether the elevated temperature was a product of the saw, blade design, blade material, technique of cast removal, or casting materials. The results demonstrated that cast-saw blades manufactured with stainless steel are poorly suited for a device that uses friction to separate a cast. Modifications to the technique and varying the cast-saw models did not reduce the blade temperature consistently to <120-130 degrees F during normal operations.
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