Is dislocation following total hip arthroplasty caused while suffering from delirium?

Area of Science:

• Orthopedic Surgery
• Geriatric Medicine
• Neuroscience

Background:

• Dislocation following total hip arthroplasty (THA) is a significant complication.
• The link between postoperative delirium and THA dislocation is not well understood.

Purpose of the Study:

• To investigate the association between postoperative delirium and dislocation after THA.
• To identify risk factors and potential preventative strategies.

Main Methods:

• Retrospective study of 738 patients undergoing unilateral THA for hip osteoarthritis.
• Patients were categorized into two groups: with (n=8) and without (n=730) postoperative delirium.

Main Results:

• A significantly higher rate of dislocation due to falls occurred in patients with postoperative delirium (12.5%) compared to those without (0%) (p=0.011).
• Postoperative delirium may contribute to falls from a standing position, leading to THA dislocation during hospitalization.

Conclusions:

• Postoperative delirium is a potential risk factor for THA dislocation, primarily through falls.
• Preventing delirium, falls, and associated injuries is vital, especially for high-risk patients.
• Further research with larger cohorts is recommended to confirm these findings.