BACKGROUND Codman's paradox reveals a misunderstanding of geometry in orthopedic practice. Physicians often encounter situations that cannot be understood intuitively during orthopedic interventions such as corrective osteotomy. Occasionally, unexpected angular or rotational deformity occurs during surgery.This study aimed to draw the attention of orthopedic surgeons toward the concepts of orie...

BACKGROUND Tibial osteotomy is a treatment for younger and/or physically active patients suffering from uni-compartmental knee osteoarthritis. The open wedge osteotomy by the hemicallotasis technique includes the use of external fixation. The use of external fixation has several advantages, as early mobilization and the opportunity for optimal correction. However, the hemicallotasis technique h...

INTRODUCTION The aim of this study was to examine resistance to angulation and displacement of the internal fixation of a proximal first metatarsal lateral displacement osteotomy, using a locking plate system compared with a conventional crossed screw fixation. MATERIALS AND METHODOLOGY Seven anatomical human specimens were tested. Each specimen was tested with a locking screw plate as well a...

Patients with spina bifida cystica commonly have significant disability from a combination of valgus deformity of the ankle and subtalar joints with lateral tibial torsion and plano-abduction deformity of the foot. These deformities can be corrected by a single procedure which combines a supramalleolar tibial osteotomy with a lateral inlay triple fusion. This procedure was carried out on 20 fee...

INTRODUCTION A misdiagnose and inadequate treatment of neonatal septic arthritis of the hip has multiple sequelae and causes a severe disability. The aim of this study is evaluation of treatment of residual deformity after type IVA neonatal septic arthritis of the hip by Pelvic support osteotomy. CASE PRESENTATION A 11-year-old, white girl, was treated surgically by pelvic support osteotomy. ...

The development of lateral tibial torsion in the paralysed lower limb is well documented, but its pathogenesis is poorly understood. This paper attempts to provide an explanation for its development when it is associated with a varus or equinovarus deformity of the hindfoot. Correction of the lateral tibial torsion by supramalleolar derotation tibial osteotomy and reorientation of the ankle mor...

Periprosthetic femoral fracture post-total knee arthroplasty can lead to malunion. This may lead to abnormal force transmission and accelerated wear of the prosthesis. Accurate femoral deformity correction depends on the combined correction of the mechanical axis alignment and the lateral distal femoral angle. Modern external fixation correction devices allow for simultaneous gradual correction...

ilateral sagittal split osteotomy (BSSO) is commonly used n the correction of dentofacial deformities. However, in cases f facial asymmetry with a shift of the mandibular midline r occlusal cant, the condyle is displaced laterally by the ulling of the proximal segment medially when there is bony nterference between the proximal and distal segments after he osteotomy. When the gap between the pr...