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Biomedical subjects

V D Waldron

Publications and source records attributed to V D Waldron.

15 recordsLinked to original sources
PubMed1999

Delivering bone grafts percutaneously.

Many fractures that require external fixation occur in patients with deficient bone. To prevent later collapse after the fixation is removed, bone graft material can be placed into the fracture defect. Mineral can be placed accurately through a minimal incision by using equipment in the external fixation set.

Bone Density↗
PubMed1998

Selecting the incision for percutaneous hip pinning.

The larger the distance between the skin and the greater trochanter, the more difficult it is to determine the precise spot to insert a guide pin to percutaneously fix a hip. This is made more difficult when the neck of the femur cannot be placed parallel with the floor. A new technique is described that will help to keep the incision short, particularly in obese patients. Preoperative marks are made on the skin to aid with pin placement. The lateral mark is made in the standard way. The anteroposterior mark is found, not from an arc, but from a plumb line.

Bone Nails↗
PubMed1995

Passing a guide pin through a displaced tibial nonunion.

A method is presented for aligning apposing medullary canals in preparation for closed nailing in cases of displaced tibial nonunions. This method involves manipulating an intramedullary guide pin through the nonunion via a bone hook inserted through a small incision at the fracture site. The minimal disruption to the fracture site may reduce the risk of infection and speed healing.

Bone Nails↗
PubMed1992

Improving the C-arm image of small bones.

The C-arm image of a small bone can sometimes be improved by suspending the extremity in the air, rather than positioning it flat on the operating-room table in the traditional manner. The C-arm roentgenogram is a modern development that allows rapid visualization of a roentgenographic image via computer enhancement of a low, k-voltage shot. As with any technical advance, it has its limitations; for small bones and bones involving growth plates, it is frequently deceiving.

Bone and Bones↗
PubMed1991

Tips of the trade #35. Intramedullary nailing of the femoral shaft with supination.

Use of the supine position in femoral shaft nailing is useful in cases of ipsilateral hip fracture and when multiple injuries are present. The nail enters at the greater trochanter and then maintains an upright position parallel to the canal of the femur. This technique facilitates control of respiratory function and limits nerve compression complications.

Bone Nails↗