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Posterior dislocations is when the femoral head lies posteriorly after dislocation. [5] It is the most common pattern of dislocation accounting for 90% of hip dislocations, [5] and those with an associated fracture are categorized by the Thompson and Epstein classification system, the Stewart and Milford classification system, and the Pipkin system (when associated with femoral head fractures).
The Thompson and Epstein classification is a system of categorizing posterior fracture/dislocations of the hip. [1] [2] Classification. Type Description I
Hip dysplasia is an abnormality of the hip joint where the socket portion does not fully cover the ball portion, resulting in an increased risk for joint dislocation. [1] Hip dysplasia may occur at birth or develop in early life. [1]
When an individual receives a hip dislocation, there is an incidence rate of 95% that they will receive an injury to another part of their body as well. [33] 46–84% of hip dislocations occur secondary to traffic accidents, the remaining percentage is due based on falls, industrial accidents or sporting injury. [25] Foot and Ankle:
X-rays of hip dysplasia are one of the two main methods of medical imaging to diagnose hip dysplasia, the other one being medical ultrasonography. [ 1 ] [ 2 ] Ultrasound imaging yields better results defining the anatomy until the cartilage is ossified .
Pipkin fracture-dislocation: G. Pipkin: posterior dislocation of hip with avulsion fracture of fragment of femoral head by the ligamentum teres: impact to the knee with the hip flexed (dashboard injury) Type II-V: Posterior Fracture Dislocations at Wheeless' Textbook of Orthopaedics online Pott's fracture [4] Percival Pott: bimalleolar fracture ...
assess hip dislocation The Galeazzi test , also known as the Allis sign, is used to assess for hip dislocation , primarily in order to test for developmental dysplasia of the hip . It is performed by flexing an infant's knees when they are lying down so that the feet touch the surface and the ankles touch the buttocks .
Coxa valga is a deformity of the hip where the angle formed between the head and neck of the femur and its shaft is increased, usually above 135 degrees.. The deformity may develop in children with neuromuscular disorders (i.e. cerebral palsy, spinal dysraphism, poliomyelitis), skeletal dysplasias, and juvenile idiopathic arthritis.