Prospective comparative analysis from pre- to postoperative changes in Single Assessment Numeric Evaluation (SANE)...

Area of Science:

• Orthopedics
• Sports Medicine
• Clinical Outcomes Research

Background:

• Single Assessment Numeric Evaluation (SANE) has been introduced for pre-operative assessment of lateral patellar instability (LPI).
• Post-operative evaluation methods for LPI using SANE questions are not well-established.
• This study addresses the need for evaluating SANE questions in the post-operative setting for LPI.

Purpose of the Study:

• To investigate the ability of SANE questions (SQs) to assess patients with LPI before and after surgery.
• To compare the post-operative performance of three different SANE question formulations.
• To assess the correlation between SANE questions and the Banff Patella Instability Instrument 2.0 (BPII 2.0) pre- and post-operatively.

Main Methods:

• 120 consecutive patients with LPI were prospectively assessed using the BPII 2.0.
• Patients were randomized into three groups, each answering one of three SANE questions (SQ1, SQ2, SQ3).
• Reassessment with SANE questions and BPII 2.0 was performed at ≥24 months post-operatively for 98 patients.

Main Results:

• Post-operatively, mean BPII 2.0 was 77.7 ± 17.3. Mean SQ1, SQ2, and SQ3 results were 82.9%, 77.1%, and 80.1%, respectively, showing no significant differences between groups.
• Correlations between BPII 2.0 and SANE questions changed from pre- to post-operative: SQ1 (high to low), SQ2 (low to moderate), and SQ3 (low to high).
• 88% of participants achieved patient acceptable symptom state (PASS), and 86% reported substantial clinical benefit (SCB).

Conclusions:

• All three SANE questions reflected significant post-operative improvement in LPI patients, aligning with BPII 2.0 outcomes.
• SANE question 3 (SQ3) demonstrated the strongest post-operative correlation with BPII 2.0, suggesting its potential utility.
• While SANE questions show promise, cautious interpretation is advised due to study limitations and varying pre- to post-operative correlations.