Alvin H Crawford

Learn More
STUDY DESIGN Tricenter retrospective cohort study of 72 patients who underwent posterior correction of Lenke 1 adolescent idiopathic scoliosis (AIS). Each center represented a single surgeon using only one type of construct. OBJECTIVE Compare the initial postoperative and 2-year follow-up correction of Lenke 1 AIS curves, after accounting for the(More)
STUDY DESIGN Retrospective chart review and radiographic analysis. OBJECTIVE To determine if differences exist in the sagittal alignment of adolescent idiopathic scoliosis (AIS) patients with thoracic versus thoracolumbar curve patterns. SUMMARY OF BACKGROUND DATA Relative anterior overgrowth has been suggested as the possible pathomechanism behind(More)
STUDY DESIGN A consecutive case retrospective chart and radiographic review. OBJECTIVES To determine the incidence of nine radiographic dystrophic features acquired during the process of modulation, and to analyze the statistical correlation of these acquired dystrophic features with clinical progression of a spinal deformity. SUMMARY OF BACKGROUND DATA(More)
A study of 116 patients younger than 12 years of age conclusively diagnosed as having neurofibromatosis was undertaken to determine the incidence of significant orthopedic problems. Deformities of the spine comprised the most common skeletal problem. Seventy-four patients (64%) had spinal deformities. Forty-six patients were treated by posterior spinal(More)
STUDY DESIGN Retrospective analysis of prospectively collected multicenter series. OBJECTIVE To evaluate the sagittal profile of surgically treated adolescent idiopathic scoliosis (AIS) patients. SUMMARY OF BACKGROUND DATA With the increasing popularity of segmental pedicle screw spinal instrumentation, thoracic kyphosis (TK) is often sacrificed to(More)
The seriousness of the consequences of growth and angular disturbances about the knee that occur as a result of injuries in childhood cannot be overemphasized. The resulting limb length discrepancy is well known to the office practitioner, who sees these patients presenting with back problems during adulthood. Normal knee motion and stability are prime(More)
PURPOSE Intraoperative blood loss in scoliosis surgery often requires transfusions. Autogenous blood decreases but does not eliminate risks typically associated with allogenic blood transfusion. Costs associated with transfusions are significant. Tranexamic acid (TXA) has been shown to decrease blood loss in cardiac and joint surgery. Few studies have(More)
Thirty-three (75 per cent) of forty-four unselected children who had Legg-Perthes disease were found to have coagulation abnormalities. Twenty-three children had thrombophilia (a deficiency in antithrombotic factor C or S, with an increased tendency toward thrombosis); nineteen of the twenty-three children had protein-C deficiency and four had protein-S(More)
To assess the impact of traumatic hip dislocations in the skeletally immature patient, 42 children younger than 16 years of age (average age, 9 years 10 months) who were treated at the authors' institution were studied. Data were collected from charts and radiographs and by completion of questionnaires. The average followup after injury was 10 years 1(More)