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Biomedical subjects

D D Aronson

Publications and source records attributed to D D Aronson.

26 records · Page 2Linked to original sources
PubMed1987

Skeletal traction for fractures of the femoral shaft in children. A long-term study.

Fifty-four children who had been treated with 90-90 skeletal traction for a fracture of the femoral shaft were examined after an average follow-up of 4.3 years. All of the patients were functioning normally and had a symmetrical range of motion of both hips and knees. A limb-length discrepancy of more than thirteen millimeters was found in three of thirty-nine children who were less than eleven years old and in eight of fifteen who were more than eleven years old. Traction pins that were placed obliquely were associated with a statistically significant (p less than 0.01) and predictable difference in the intercondylar angle (axis of the knee joint) as compared with pins that were placed horizontally. The study showed that pins for skeletal traction should be placed parallel to the axis of the knee joint and that fractures in children who are more than eleven years old should be reduced without overriding.

Adolescent↗
PubMed1987

Supracondylar fractures of the humerus in children. A modified technique for closed pinning.

Complications in the treatment of displaced supracondylar fractures of the humerus (DSFH), particularly cubitus varus, are a persistent problem. A prospective study was conducted on 20 children with DSFH, using a modified technique to reduce and pin the fracture. All fractures were treated with closed reduction and percutaneous pinning. After the fracture was internally fixed, intraoperative anteroposterior roentgenograms of each distal humerus were compared, using Baumann's angle. The reduction was accepted if Baumann's angle on the fractured extremity was within 4 degrees of that on the normal side. If the angles were not within 4 degrees, the closed reduction and percutaneous pinning was repeated. In this prospective series, all patients had a reduction to within 4 degrees of the normal side before they left the operating room. Three weeks after percutaneous pinning, the pins were removed and range of motion was begun. All patients returned for clinical and roentgenographic examination. With an average follow-up period of 17.2 months, all patients had excellent or good results. No patient developed cubitus varus deformity. Strict adherence to the guidelines of the protocol prevented cubitus varus deformity in this series of children with DSFH.

Bone Nails↗
PubMedDate not supplied

The systemic and local effects of an intramedullary injection of methylprednisolone acetate in growing rabbits.

Intramedullary injection of methylprednisolone acetate (Depo-Medrol) is successful in the treatment of children with unicameral cysts, but its mechanism of action remains obscure. Using a rabbit model, methylprednisolone was injected into the intramedullary canal of the left proximal tibia. Normal saline was injected into the right proximal tibia as a control. Venous blood samples following injection revealed that corticosteroid was rapidly cleared from bone. Serum methylprednisolone levels rose rapidly, giving a dose-response curve similar to that after an intramuscular injection in humans. Rabbits were killed and analyzed histologically for local changes. There was no fibroblastic proliferation, neovascularization, or other histologic change secondary to injection.

Animals↗
PubMedDate not supplied

Aortic anatomy in children with myelomeningocele and congenital lumbar kyphosis.

Preoperative aortograms were reviewed in six children with thoracic myelomeningocele and lumbar kyphosis at an average age of 25 months. In all children, the abdominal aorta bridged the lumbar kyphosis. In four children, the upper renal poles were close to the spine and were at potential risk during kyphectomy. All children had aortic shortening with an increased variability in origin of the major abdominal aortic branches. Abnormal lumbar arteries were noted in four children.

Aorta↗
PubMedDate not supplied

Supracondylar fractures of the humerus: a prospective study of percutaneous pinning.

In 1981, we designed a protocol to treat displaced supracondylar fractures using a modified technique of closed reduction and percutaneous pinning. After the fracture was internally fixed, intraoperative anteroposterior (AP) radiographs of each distal humerus were compared. The reduction and pinning was accepted only if the radiographs demonstrated that Baumann's angle was < or = 4 degrees of that on the normal side. Seventy-one patients had clinical and radiographic evaluations at an average of 2 years 6 months after the operation. According to Flynn's criteria, the results were satisfactory in 70 patients and unsatisfactory in one. No patient had a cubitus varus deformity at follow-up evaluation.

Bone Nails↗