Articulated Distraction
Articular hip distraction can be applied either by using a monolateral articulated distractor or a circular fixator. The fixator should be aligned such that its axis is aligned with the…
ORTHOPEDIC
Valgus Osteotomy for Hinge Abduction
Failure of the enlarged and deformed anterolateral portion of the femoral head to roll into the acetabulum during abduction alters hip joint mechanics. The resultant hinge abduction is associated with…
Principles of Treatment in Late Stages of Perthes Disease
It is of paramount importance to distinguish hips that may or may not be suitable for containment in the transitional stage (fragmentation to early reossification stage), because long-term clinical and radiological…
Containment Methods for Treatment of Legg-Calvé-Perthes Disease
The objective of containment treatment in Perthes disease is to hold the femoral head in the acetabulum during the period of “biologic plasticity” while necrotic bone is resorbed and living…
Principles of Containment Treatment Aimed at Preventing Femoral Head Deformation in Perthes Disease
The aim of treatment of Perthes in the early part of the disease is to prevent the femoral head from getting deformed by muscular forces and weight-bearing stresses transmitted across…
Prognostic Factors and Outcome Measures in Perthes Disease
The shape of the femoral head at the time when Perthes disease heals is the most important determinant of the risk for degenerative arthritis; hence, the shape of the femoral…
Pathophysiology, Classifications, and Natural History of Perthes Disease
Since the original reports of Legg-Calvé-Perthes disease (LCPD), much research effort has been undertaken to improve understanding of this idiopathic hip disorder. This article focuses on the current knowledge of…
The Epidemiology and Etiology of Perthes Disease
The incidence of Perthes disease varies markedly both between countries and within countries down to a local level. The disease is more common in white than in Asian or black…
Legg-Calvé-Perthes Disease
Charles T. Price, MD, Guest Editor Benjamin Joseph, MS Orth, MCh Orth, Guest Editor A hundred years after the description of Legg-Calvé-Perthes disease, the aetiology remains elusive and a great…
Emerging Technologies for Molecular Therapy for Intervertebral Disk Degeneration
Intervertebral disks are biologically regulated by the maintenance of a balance between the anabolic and catabolic activities of disk cells. Therapeutic agents, initially evaluated using in vitro studies on disk…
