A client with a posterior approach total hip replacement should AVOID which of the following?

In the context of a client who has undergone a posterior approach total hip replacement, option C highlights crucial movement patterns that must be restricted to ensure the integrity of the hip joint and avoid complications such as dislocation.

After a posterior hip replacement, the hip's position can be vulnerable to dislocation, especially with movements that involve hip flexion beyond certain degrees, internal rotation, and adduction. These movements are significant because the natural mechanics of the hip joint, after surgery, can potentially lead to misalignment or dislocation if the joint is stressed inappropriately.

Restricting hip flexion to less than 90 degrees is essential as this degree of flexion is typically where the risk of dislocation increases. Additionally, avoiding internal rotation is critical because this motion can place the surgical joint in a position where the prosthesis could dislocate from its new socket. Adduction is also a concerning movement after this type of surgery, as it can similarly lead to misalignment and dislocation.

Therefore, understanding these limits helps ensure that the client adheres to safe practices post-surgery, promoting healing and minimizing the risk of complications. This principle underpins rehabilitation protocols and activity modifications that are essential for recovery and long-term joint stability after a hip replacement