What is Dual Mobility Hip Replacement?
Introduction
Hip replacement surgery is a common procedure performed to alleviate pain and improve mobility in patients with hip joint problems. One of the options available for hip replacement is a Dual Mobility hip replacement. In this blog, we will explore what a Dual Mobility hip replacement is and how it differs from a standard hip replacement.
The Standard Hip Replacement
The hip joint is a ball and socket joint. During a standard hip replacement procedure, the damaged joint is replaced with an artificial joint that mimics the shape of the natural joint. The artificial joint consists of a large metal pin that holds a ceramic head, which is placed inside a polyethylene liner. The polyethylene liner is attached to a metal socket that fits into the cup of the hip joint. This configuration allows for smooth movement of the hip joint.
Understanding Dual Mobility Hip Replacement
In a Dual Mobility hip replacement, an additional metal liner is added to the standard configuration. This metal liner is smooth on the inside and houses the polyethylene liner. Similar to the standard hip replacement, there is a ceramic ball that goes inside the polyethylene liner. The unique feature of the Dual Mobility hip replacement is that the polyethylene liner can move within the metal socket, providing two points of movement for the hip joint.
Advantages of Dual Mobility Hip Replacement
The primary advantage of a Dual Mobility hip replacement is its reduced risk of dislocation. Compared to a standard hip replacement, a Dual Mobility hip replacement has a larger effective ball size. This larger ball size makes it more difficult for the hip joint to dislocate. This makes the Dual Mobility hip replacement particularly beneficial for patients who are at a higher risk of dislocation, such as those with hip fractures, a history of hip dislocation, or neurological disorders.
Considerations and Usage
While a Dual Mobility hip replacement offers advantages in terms of stability and reduced risk of dislocation, it is important to note that it also introduces the possibility of wear and tear at two different joints. As a result, Dual Mobility hip replacements are typically reserved for patients who are at a higher risk of dislocation. The decision to use a Dual Mobility hip replacement is made on a case-by-case basis, considering the patient’s specific needs and risk factors.
A Real-Life Example
To illustrate the effectiveness of a Dual Mobility hip replacement, let’s consider the case of a patient who had a standard hip replacement but experienced dislocation. The patient initially had a hip replacement done elsewhere but soon experienced a hip dislocation. This instability led the patient to seek treatment elsewhere. Upon evaluation, it was determined that a Dual Mobility hip replacement would be more suitable for this patient. After undergoing the procedure, the patient’s hip joint became stable, and she has remained stable since then.
Conclusion
In summary, a Dual Mobility hip replacement is a variation of the standard hip replacement procedure. It involves the addition of an extra metal liner that allows for more movement within the hip joint. The primary benefit of a Dual Mobility hip replacement is its reduced risk of dislocation, making it an excellent choice for patients who are at a higher risk of this complication. However, it is important to carefully consider the potential wear and tear that can occur at two different joints. Ultimately, the decision to opt for a Dual Mobility hip replacement should be made in consultation with a qualified orthopedic surgeon. Thank you for reading!