BACKGROUND AND AIMS The aim of this study is to evaluate the effect of proximal tibia osteotomy on hip biomechanics. METHODS This cohort study was conducted on 50 knees of 37 patients divided into two groups of unilateral and bilateral surgeries during 2015-2016. Patients underwent medial open-wedge osteotomy of proximal tibia. Axial alignment of lower limb radiography was carried out for the...

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...

Dysplasia of the hip is characterized by malpositioning of the proximal femur in a shallow acetabulum, providing deficient femoral head coverage. This abnormal relationship leads to altered biomechanics of the hip joint, as predicted by measurement of kinematic parameters such as increased load over reduced acetabular weight-bearing area, leading to increased joint contact stresses, which subse...

An ultrasonometric and computed-tomographic study of bone healing was undertaken using a model of a transverse mid-shaft osteotomy of sheep tibiae fixed with a semi-flexible external fixator. Fourteen sheep were operated and divided into two groups of seven according to osteotomy type, either regular or by segmental resection. The animals were killed on the 90th postoperative day and the tibiae...

Although Mitchell osteotomy and Wilson osteotomy are two popular methods for the treatment of hallux valgus, there are no studies directly comparing their results. Fifty-six patients (73 feet) who underwent a Wilson osteotomy and 30 patients (34 feet) who had a Mitchell osteotomy were followed for a mean period of 33.7 and 38.9 months, respectively. The results were comparable in terms of hallu...

The Austin procedure is primarily a transpositional V osteotomy of the head of the first metatarsal for the management of hallux valgus. The procedure was first reported in the podiatric literature and attributed to Dr. Austin by Miller and Croce. The procedure was presented initially by Dr. Dale Austin in his 1981 publication. The procedure as described is a horizontally directed V osteotomy p...

  Background: There are few studies comparing the biomechanical properties of angled blade plate and locking compression plates in supracondylar osteotomy. In the current randomized study, we prospectively compared the clinical and radiological outcomes of supracondylar osteotomy using these two plates. Methods: Forty patients with valgus knee malalignment were randomly assigned to two equal nu...

In 1881, Reverdin described a closing wedge osteotomy of the first metatarsal head with the apex laterally that also included excision of the medial eminence (Fig. 11-1A). His purpose was to realign the abducted hallux and remove the prominent bump. The procedure effectively reduces an abnormal proximal articular set angle but does not directly address the intermetatarsal angle. Since the time ...