Hip dysplasia is the medical name used to describe a problem with the formation of the hip joint. The location of the problem can be either the ball of the hip joint, femoral head, the socket of the hip joint, the acetabulum, or both. Hip Dysplasia is also referred to CDH and DDH.
This condition affects approximately 1.3 people in 1000. That means approximately 9 million people out of the world 7 billion have hip dysplasia, so you can be pleased to know you are definitely not going through this journey alone!
It has been found that there is a 4:1 female to male ratio, with the left hip being more commonly affected and only 20% of cases are bilateral, occurring in both hips.
Femoroacetabular impingement appears in 2 forms. The Cam impingement is where there is a bump on the surface of the femoral head which jams the rim of the acetabulum. The Pincer impingement is where the acetabulum is too deep, which then restricts the movement of the femoral head. Sometimes the Cam and Pincer impingements exist together.
Some symptoms include;
Pain or aching, usually in the groin area.
Pain after prolonged sitting and after walking.
Restricted range of motion after high flexing or trying to cross your legs.
Hip dysplasia in teenage years
If DDH is not detected at birth or early childhood, people can typically experience symptoms in their teenage years and beyond. Common symptoms include;
Pain in the groin region that radiates to the outer buttock or thigh.
Weakness in the leg.
Difficulty walking or possibly limping.
Loss or limitation in the joint's range of motion.
Feeling a grinding sensation in the joint.
Hearing a click or clunk sound.
Sensation of giving way, catching or locking.
DDH is the most common hip deformity causing symptoms in teenagers and beyond. In the most common form, hip dysplasia involves a shallow acetabulum. This shallowness causes the femoral head to force excess pressure on the rim of the acetabulum. If left untreated this excess pressure could result in osteoarthritis. Therefore the condition often gets worse over time with the severity of DDH varying a lot.
Doctors sometimes compare DDH to an imbalanced car tyre. The tread wears out faster when a tyre is out of alignment. Before the tire wears out completely, it can be rotated to increase the life of the remaining tread. However when the tread is gone, the tire needs replacing. This means that surgical intervention like re-orientation of the hip can significantly increase the life span of the joint. However when the cartilage in the hip has completely worn out a total hip replacement is usually needed.
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