Skeletal stability was examined in 16 patients following combined maxillary and mandibular osteotomies using rigid internal fixation. Postoperative changes (T2 to T3) were generally less than 1.0 mm for linear measurements and less than 2.0 degrees for angular measurements. The removal of maxillomandibular fixation (MMF) splints accounted for 85% to 95% of the counterclockwise rotation in the p...

OBJECTIVE To determine if performing a superior cantholysis eases the surgical exposure, reduction, and rigid fixation of the zygomaticofrontal suture in the open repair of zygomatic complex (ZMC) fractures. PATIENTS AND METHODS Fifteen superior cantholysis procedures were used in 14 patients who presented with ZMC fractures requiring open reduction and internal fixation. Follow-up ranged fro...

OBJECTIVE The purpose of the present study was to evaluate the postoperative three-dimensional (3D) changes in the proximal segments after mandibular setback sagittal split ramus osteotomy and to compare the changes between the conventional mini-plate fixation and semi-rigid sliding plate fixation. METHODS Cone-beam computed tomography (CBCT) images were used to evaluate the postoperative 3D ...

BACKGROUND Conventional anterior cervical discectomy with fusion is thought to require postoperative neck immobilization for the promotion of bony fusion. Rigid internal fixation with anterior cervical plates may decrease graft-related complications and provide immediate stability. This stability may obviate postoperative external immobilization. METHODS This report reviews one surgeon's expe...

OBJECTIVES Using magnetic resonance imaging (MRI), we analyzed the efficacy of the posterior approach lumbar ISOBAR TTL internal fixation system for the dynamic fixation of intervertebral discs, with particular emphasis on its effects on degenerative intervertebral disc disease. METHODS We retrospectively compared the MRIs of 54 patients who had previously undergone either rigid internal fixa...

Currently, bilateral pedicle screw fixation is the standard of instrumentation, providing rigid fixation and an increased fusion rate. However, due to the excessive rigidity of the system, this instrumentation has been suspected to cause degeneration of adjacent segments. Alternatively, less rigid unilateral pedicle fixation is considered to be as effective as bilateral constructs. Few studies ...

pedicle screws provide rigid fixation for instabilities in the lumbar and lumbosacral spine. anatomical consideration and potential risk of neurologic complications are the reasons to hesitate using pedicle screws in the thoracic spine. twenty moulages similar to human vertebrae were instrumented with cotrel-dubousset (cd) system pedicle screw by intratransverse process, extrapedicular and intr...

Introduction The ability to treat fracture with open reduction and internal fixation (OR/IF) has dramatically revolutionized the approach to mandible fracture. With OR/IF, the postoperative role of rigid maxillomandibular fixation (MMF) has declined, but it is used to maintain proper occlusion until internal fixation of the fracture is achieved. Objective To assess intraoperative manual MMF dur...

Despite recent advances in orthopaedic research, treatment of certain types of long bone fracture still represents a significant clinical problem. The current trend in treatment technique has been toward a less rigid fixation in an attempt to promote callus and encourage early union, using semi-rigid plates or external skeletal fixation frames with variable rigidity. It has been well documented...

BACKGROUND No uniform consensus exists to decide type of fixation for arthroscopic anterior cruciate ligament reconstruction. Hypothsis: There is similar functional outcome after rigid fix compared to other methods of fixation which has been published. STUDY DESIGN Retrospective observational study. METHODS A total of 50 patients underwent arthroscopic anterior cruciate ligament reconstruct...