BACKGROUND This study aimed to compare Smith-Petersen osteotomy (SPO), poly-segmental wedge osteotomy (PWO) and pedicular subtraction osteotomy (PSO) in patients with rigid thoracolumbar kyphosis primarily caused by ankylosing spondylitis. The efficiency, efficacy and safety of these three osteotomies have not been compared systematically, and no illness-oriented surgical type selection strateg...

o bjectives: the aim of this study was to investigate the displacement and stress distri- bution during surgically assisted rapid maxillary expansion under different surgical conditions with tooth- and bone-borne devices. materials and methods: three-dimensional (3d) finite element model of a maxilla was constructed and an expansion force of 100 n was applied to the left and right molars and pr...

OBJECTIVE To evaluate the nasolacrimal ostium created after successful external dacryocystorhinostomy. METHODS This prospective study included 41 successful primary external dacryocystorhinostomies performed in 41 patients with nasolacrimal duct obstruction (33 women and 8 men; age range, 19-75 years). The dimensions of osteotomy were measured during surgery. Patients alternately underwent ei...

BACKGROUND Metatarsalgia with plantar hyperkeratosis can be a difficult problem to treat. Many different techniques have been reported with the Weil osteotomy very popular currently. Despite good results complications include metatarsophalangeal stiffness, hyperextension of the toe, prehensile deficit and a reduction in strength. We evaluated our results with a distal diaphyseal osteotomy. MA...

background: this study aimed to investigate the pedicle dimension and angulation in cervicothoracic junction (ctj) using the findings of computed tomographic (ct) to help accurate insertion of pedicular screw. methods: forty three patients with high quality ct images of ctj were evaluated. pedicle width (pw), pedicle height (ph), pedicle axis length (pal), transverse angle (ta) and sagittal ang...