Biomedical subjects

C A Cass

Publications and source records attributed to C A Cass.

8 recordsLinked to original sources

PubMed1980

Treatment of congenital pseudarthrosis of the tibia with direct current stimulation.

Congenital pseudarthrosis of the tibia presents surgeons with one of the most challenging of all orthopedic problems. The results of various forms of surgical treatment are rarely successful. This is a preliminary report on an implanted direct current bone growth stimulator (DCBGS) for treatment of congential pseudarthrosis of the tibia. The implanted stimulator achieved encouraging results in 6 patients when it was used in conjunction with cancellous bone grafting and efficient immobilization of the tibia. The leg requires long-term protection of the fracture site until skeletal maturity is complete.

Child↗

PubMed1980

Treatment of delayed union and nonunion with an implanted direct current stimulator.

A multicentered research program on direct electrical current for stimulation of bone healing was performed by 30 Australian orthopedic surgeons. The program was designed to test an implanted device named direct current bone growth stimulation (DCBGS). The DCBGS achieved union in 72 of 84 (86%) cases of ununited fractures of long bones. These results are comparable to those obtained with other devices. The time to achieve sound union however, appears to be significantly less than by conventional bone grafting techniques. The procedure is safe and simple, with a short hospital stay and low rate of complications. Certain technical details have been stressed. The presence of previous infection is not a contraindication to this procedure. The procedure has advantages over Phemister or Charnley bone graft operations in that it produces less pain, generally avoids the need for a cancellous bone graft and allows an anterior approach to the shaft of the tibia when this might otherwise not be possible. The results for the various techniques of applying electric stimulation to bone are generally comparable although the clinical indications favoring one technique over another have yet to be determined. Electric stimulation used as described is an effective method of treatment for ununited fractures of long bones.

Adult↗

PubMed1977

The place of Dwyer anterior instrumentation in scoliosis.

The technique of Dwyer instrumentation and fusion has now become estabilished as having a definite place in the surgery of scoliosis. It is complementary to the Harrington technique of posterior instrumentation and fusion. The latter is especially suited to thoracic and double scoliotic curves, while the particular indication of the Dwyer method is the lumbar curve. Thoracolumbar curves maybe treated by either method, and paralytic curves are often best handled by a combination of the two. A significant element of kyphosis constitutes an absolute contraindication to the Dwyer procedure.

Adolescent↗

PubMed1977