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Leg length discrepancy after hip replacement is calculated as the vertical distance between the middle of the minor trochanters, using the acetabular tear drops [94] or the transischial line [16] as references for the horizontal plane. A discrepancy of up to 1 cm is generally tolerated. [94] [16]
X-rays for leg length measurement.. Unequal leg length in children is frequently first suspected by parents noticing a limp that appears to be getting worse. [3] The standard workup in children is a thorough physical examination, including observing the child while walking and running. [3]
Klein's line or the line of Klein is a virtual line that can be drawn on an X-ray of an adolescent's hip parallel to the anatomically upper edge of the femoral neck.It was the first tool to aid in the early diagnosis of a slipped capital femoral epiphysis (SCFE), which if treated late or left untreated leads to crippling arthritis, leg length discrepancy and lost range of motion.
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. When the infant is around 3 months old a clear roentgenographic image can be achieved.
After hip replacement, hip prosthesis zones are regions in the interface between prosthesis material and the surrounding bone. These are used as reference regions when describing for example complications including hip prosthesis loosening on medical imaging .
Hemipelvectomy, also known as a pelvic resection, is a surgical procedure that involves the removal of part of the pelvic girdle.This procedure is most commonly performed to treat oncologic conditions of the pelvis.
Hip dysplasia can be diagnosed by ultrasound [44] and projectional radiography ("X-ray"). [45] Ultrasound imaging is generally preferred at up to 4 months due to limited ossification of the femoral head up until then, and is the most accurate method for imaging of the hip during the first few months after birth. However, in most instances ...
Distraction osteogenesis (DO) is used in orthopedic surgery, and oral and maxillofacial surgery to repair skeletal deformities and in reconstructive surgery. [1] [2] [3] It was originally used to treat problems like unequal leg length, but since the 1980s is most commonly used to treat issues like hemifacial microsomia, micrognathism (chin so small it causes health problems), craniofrontonasal ...