Todd F Ritzman

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STUDY DESIGN Retrospective review of a multicenter prospectively collected series of adolescent idiopathic scoliosis (AIS) patients. OBJECTIVE To compare uninstrumented compensatory curve spontaneous derotation of the rib hump and lumbar prominence after selective lumbar or thoracic fusions in AIS. SUMMARY OF BACKGROUND DATA Coronal correction of the(More)
BACKGROUND A recently proposed one-stage bone-transport surgical procedure exploits the intrinsic osteogenic potential of the periosteum while providing mechanical stability through intramedullary nailing. The objective of this study was to assess the efficacy of this technique to bridge massive long-bone defects in a single stage. METHODS With use of an(More)
BACKGROUND Slipped capital femoral epiphysis (SCFE) is usually treated with percutaneous in situ screw fixation to prevent further progression of deformity. The purpose of this investigation is to compare computer navigation (CN) techniques with traditional fluoroscopic (fluoro) techniques for in situ fixation of SCFE. METHODS This study was an(More)
STUDY DESIGN Multicenter, prospective, cohort study. OBJECTIVE To compare minimum 2-year postoperative shoulder function after 3 different surgical approaches for the treatment of primary thoracic curves in patients with adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA Thoracic spinal instrumentation and fusion can be performed via(More)
STUDY DESIGN Retrospective case series. OBJECTIVES To compare radiographic and clinical outcomes in posterior spine fusions with pedicle screw instrumentation of varying screw densities in the treatment of adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA Posterior spinal fusion with pedicle screw instrumentation is the mainstay of(More)
As a potential means of comparing hypothyroidism in humans, this work intended to establish a defined hypothyroid state in immature miniature swine and evaluate specific molecular, cellular, and extracellular responses of their growth plates. Two male, 11-week-old Sinclair miniature swine were given 6-propyl-2-thiouracil (PTU) in their water and two other(More)
Although flexion-type supracondylar humerus fractures account for a minority of all supracondylar humerus fractures, they warrant special attention because of their relatively high rate of requirement for open reduction and their potential for ulnar nerve injury or entrapment. The severity of flexion-type supracondylar humerus fractures may be difficult to(More)
Supracondylar humerus fractures are the most common elbow fractures in children. Displaced supracondylar humerus fractures that are associated with neurologic and/or vascular injuries should be treated with timely reduction via closed techniques. If closed reduction fails, reduction via open techniques is indicated. There is controversy about which surgical(More)
Pediatric supracondylar humerus fractures are the most commonly encountered type of elbow fractures in children that require surgical fixation. Many pediatric supracondylar humerus fractures can be treated with closed reduction and percutaneous skeletal fixation. In difficult fractures, adjunct pin techniques, such as joystick wires and leverage pins, can(More)
Transphyseal fractures of the distal humerus typically occur in children younger than 3 years secondary to birth trauma, nonaccidental trauma, or a fall from a small height. Prompt and accurate diagnosis of the injury is crucial for a successful outcome. Recognizing that the forearm is not aligned with the humerus on plain radiography can aid in the(More)