The Subjective Hip Value is a Valid, Reliable, and Responsive Instrument for Assessing Hip Function in Primary Total...

Area of Science:

• Orthopedic surgery
• Patient-reported outcome measures
• Arthroplasty outcomes

Background:

• Patient-reported outcome measures (PROMs) are crucial for clinical decisions and research.
• Multi-item scores like the modified Harris Hip Score (mHHS) can be time-consuming.
• The Subjective Hip Value (SHV) is a single-item assessment of hip function.

Purpose of the Study:

• To evaluate the psychometric properties (validity, reliability, responsiveness) of the SHV.
• To determine the minimal clinically important difference (MCID) for the SHV.
• To assess the utility of SHV in patients undergoing total hip arthroplasty.

Main Methods:

• Prospective enrollment of 137 patients undergoing primary total hip arthroplasty.
• Collection of SHV and mHHS preoperatively and at multiple follow-up points (6 weeks to 1 year).
• Evaluation of validity, reliability, responsiveness, MCID, and floor/ceiling effects.

Main Results:

• Significant correlations found between SHV and mHHS across all time points.
• SHV demonstrated good test-retest reliability (rs = 0.74) and responsiveness (rs = 0.24).
• The MCID for SHV was determined to be 10.06%, with comparable floor/ceiling effects to mHHS.

Conclusions:

• The SHV is a valid, reliable, and responsive single-item score for assessing hip function post-arthroplasty.
• SHV effectively detects clinically relevant changes in joint function.
• The ease of collection and interpretation supports the implementation of SHV in clinical practice.