The longevity of artificial hip
When artificial hip replacement, for whatever causes (osteoarthritis, fractures of the femoral neck, necrosis of the femoral head,…) and any age group (young or old), as well as the patient always wonders about hip life span. Some people obsess about it and don’t want to accept levels of illness, pain but don’t agree surgery. Basically, hip life span understood is the time from the surgery of joint replacement to replace it. This perception is broader than the usual perception that is the durability of artificial joints because the current technologies and materials, when replacing, the joints remain almost intact in terms of structure. The main reason why patients often have to replace the troublesome affect activities of the patient as pain or restricted movement. Factors to replace the artificial joint is common: the continuing failure of the joints, the loose artificial joint and some other cause. In particular, if all factors related to joint replacement such as surgery technique, sterile,… be assured there is still a factor in reducing the lifespan of the joint, which is joint damage, loose joints and joints material abrasion.
The continued failure of the joints of patients
There are some kinds of hip that the prognosis for the life span of the joints can be close, which is the partial artificial hip or the classic femoral head types such as Moore cap. In this type of joints, the direct contact between the artificial joints (metal or plastic) with bone and cartilage of patients will hurt the progression of bone and cartilage leading to the appearance of pains or short foot (due to joint abrasion). Metal cap will cause corrosion faster so the longevity of the classic type of cap is usually shorter (usually no more than 5 to 10 years) and that is why today the kinds of cap are rarely used. The partial artificial joints with plastic caps that will help reduce the damage caused by direct mechanical contact and lifespan will be longer, but the cartilage damaged by direct contact with an artificial joint is one reason causing pain and have to replace the artificial joint. The joint replacement in this case often replaces totally hip joint.
The loose artificial joint
The link between artificial joints and bones’ patient plays an important role in the life issues of artificial joints. If this link is loose because of something such as infections, bone quality, the response of the patient’s body to make artificial joint loose leading to pain, affecting movement, thus to replace the joints. The link between the current artificial joints has two types are using biological cement and not using biological cement. Between these two categories are different views and debates about what kind of better sort, but basically both are at risk of loose joint because the response of the patient’s body but at different levels. The advances in material technology help cement materials and artificial joints can be compatible in biology better, but do not completely eliminate the risk of loose joint from the body’s reaction patients.
The artificial joint erosion
With the kinds of universal joints, the exposure of artificial joints between metal and plastic. Over time, the plastic layer is usually worn, although improvements in materials, the risk is still there. With the more modern types of joints such as ceramic joints that have higher durability, less abrasion, therefore, the life expectancy is higher and higher.
In addition to the above two reasons, there are some other reasons shorten the life of the joints, but there are objective reasons, due to external factors such as:
- Surgical Technique
- Fractures around an artificial joint
As shown above, we gave you some main reasons that affect on the longevity of artificial hip joint. we want to share some knowledge to help people notice these causes and detect them the earlier, the better.