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Elementary fracture Description Associated fractures Description Posterior wall: This is the most common variety of acetabular fracture. It typically occurs due to dashboard injury; when a person travelling in a vehicle involved in a head-on collision, the force applied over the flexed knee travels along the femur bone to the head of the femur, breaking the posterior wall of the acetabulum.
When either abnormality is present, it changes the position of the femoral head in the hip socket. The increased stresses that the femur and or acetabulum experience may lead to a fracture of the acetabular rim or a detachment of the overstressed labrum. [4] Women are more susceptible to acetabulum labrum tears due to their pelvic anatomy.
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 perforate acetabulum is a cup-shaped opening on each side of the pelvic girdle formed where the ischium, ilium, and pubis all meet, and into which the head of the femur inserts. [ 8 ] [ 9 ] The orientation and position of the acetabulum is one of the main morphological traits that caused dinosaurs to walk in an upright posture with their ...
Acetabulum [10] 7 [11] 1 Lunate: 2 Scaphoid: 3 Capitate: 4 Hamate: 5 Triquetrum and Pisiform: 6 Trapezium and Trapezoid: 7 Metacarpus: 8 Phalanges: 9 Multiple fractures 8 [12] 1 Talus: 2 Calcaneus: 3 Navicular: 4 Cuboid: 5 Cuneiforms: 7 Metatarsus: 8 Phalanges: 9 Multiple fractures 9 1 Craniomidface [13] 2 Mandible [14]
Protrusio acetabuli is an uncommon defect of the acetabulum, the socket that receives the femoral head to make the hip joint. The hip bone of the pelvic bone/girdle is composed of three bones, the ilium, the ischium and the pubis. In protrusio deformity, there is medial displacement of the femoral head in that the medial aspect of the femoral ...
>10 mm Offset percentage Femoral head-neck offset related to femoral head diameter >0.18 less indicates high risk of cam type impingement; Tönnis angle Slope of the sourcil (the sclerotic weight-bearing portion of the acetabulum) 0 to 10° >10° is a risk factor for instability <0° is a risk factor for pincer impingement; Caput-sourcil angle [21]
A hip fracture is a break that occurs in the upper part of the femur (thigh bone), at the femoral neck or (rarely) the femoral head. [2] Symptoms may include pain around the hip, particularly with movement, and shortening of the leg. [2] Usually the person cannot walk. [3] A hip fracture is usually a femoral neck fracture.