Changes in actigraphy metrics associated with PROMIS measures after orthopaedic surgery

Area of Science:

• Orthopaedic Surgery
• Sleep Science
• Digital Health

Background:

• Assessing postoperative recovery in orthopaedic surgery often relies on patient-reported outcome measures (PROMIS).
• Objective measures of recovery, such as sleep patterns, are less frequently integrated into routine clinical practice.

Purpose of the Study:

• To evaluate the feasibility of using actigraphy devices in orthopaedic surgical settings.
• To determine the concurrent validity between objective actigraphy data and PROMIS measures (Physical Function, Sleep Disturbance, Pain Interference).
• To examine the association between changes in actigraphy data and longitudinal changes in PROMIS measures post-orthopaedic surgery.

Main Methods:

• 17 participants undergoing orthopaedic surgery were monitored using actigraphy devices before and after surgery.
• Participants completed PROMIS questionnaires (Physical Function, Sleep Disturbance, Pain Interference) preoperatively and up to 6 months postoperatively.
• Nonparametric correlations and linear mixed-effects models were used to analyze the data.

Main Results:

• Prolonged wake after sleep onset correlated with increased sleep disturbances (r_s = 0.49, p=0.045) and pain interference (r_s = 0.51, p=0.04).
• Changes in pain interference were associated with increased awakenings (r_s = 0.54, p=0.03).
• Increased wake after sleep onset predicted worsening sleep disturbance (β = 0.12, p=0.01) and pain interference (β = 0.12, p=0.02) scores postoperatively.

Conclusions:

• Actigraphy integration into orthopaedic surgical settings is feasible.
• Objective actigraphy data demonstrates concurrent validity with PROMIS measures.
• Actigraphy can effectively evaluate longitudinal changes in patient recovery following orthopaedic surgery.