Slipped capital femoral epiphysis
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Slipped capital femoral epiphysis
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Slipped capital femoral epiphysis, is a common hip disorder in adolescence, in which the growth plate fractures.
The result is a slippage between the neck of the femur and the overlying head of femur also called the capital or epiphysis.
Normally, a growing femur has 4 main parts.
There’s the diaphysis, which is the long and hard part also called the shaft of the bone, and it extends to the metaphysis, at the level of the femoral neck.
Above the femoral neck, lies the cartilaginous growth plate also called the physis.
The cartilaginous growth plate has cells which divide and enable the bone to grow in length.
These cells are very active in adolescence and they enable a growth spurt.
During this period, the growth plate is relatively weak and vulnerable to shearing forces.
Eventually, the cartilaginous growth plate ossifies and fuses with the epiphysis. This happens around the age of 16 in females, and 19 in males.
Now, before the growth plate ossifies, it’s supported by the perichondrial ring, which is dense connective tissue that extends from the metaphysis to the epiphysis.
The perichondrial ring helps resist shearing forces so that the femoral head and the femoral neck don’t slip away from one another.
You see - the ball-shaped head of the femur comes and sits within the cup-shaped socket called the acetabulum.
This makes a ball and socket type of joint, which is kept stable by tough fibrous joint capsule, and a rope-like ligament known as the ligamentum teres.
The ligamentum teres arises from the base of the acetabulum known as the acetabular fossa, and it attaches to the fovea capitis, the depression found on the tip of the femoral head.
Summary
Slipped capital femoral epiphysis (SCFE) is a medical condition in which there is slippage between the neck of the femur and the overlying head of the femur, and it mainly affects children and adolescents. Symptoms include pain, stiffness, and difficulty walking or bearing weight on the affected hip. Treatment includes immobilization of the hip in a cast or brace, followed by surgery to stabilize the femoral head and prevent further displacement. Chronic hip pain, limited mobility, and early osteoarthritis are common complications of SCFE.
Sources
- "CURRENT Medical Diagnosis and Treatment 2020" McGraw-Hill Education / Medical (2019)
- "Slipped Capital Femoral Epiphysis: Prevalence, Pathogenesis, and Natural History" Clinical Orthopaedics & Related Research (2012)
- "A nationwide cohort study of slipped capital femoral epiphysis" Archives of Disease in Childhood (2017)
- "Surgical Management of Healed Slipped Capital Femoral Epiphysis" American Academy of Orthopaedic Surgeon (2011)
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