A preoperative scoring system to select patients for arthroscopic subacromial decompression

Area of Science:

• Orthopedic surgery
• Shoulder biomechanics
• Clinical outcomes research

Background:

• Shoulder impingement syndrome is a common cause of shoulder pain.
• Arthroscopic subacromial decompression (ASAD) is a surgical option for persistent impingement.
• Predicting patient response to ASAD is crucial for optimizing treatment.

Purpose of the Study:

• To identify clinical and radiographic factors influencing outcomes after ASAD.
• To develop a novel preoperative scoring system (PrOS) for predicting ASAD success.
• To differentiate patients likely to experience prompt versus delayed or no benefit.

Main Methods:

• Prospective review of 112 patients undergoing ASAD for impingement syndrome.
• Assessment of Oxford Shoulder Score (OSS) preoperatively and at 3 and 12 months postoperatively.
• Development and validation of a 6-criterion preoperative score (PrOS).

Main Results:

• A PrOS of 5-6 (n=62) correlated with significant OSS improvement at 3 months (P < .001).
• Patients with a PrOS of 3-4 (n=38) showed delayed improvement at 1 year.
• Patients with a PrOS ≤2 (n=12) demonstrated no significant improvement.

Conclusions:

• The developed preoperative score (PrOS) effectively identifies patients who will benefit from ASAD.
• The utility of ASAD for patients with a PrOS of ≤4 is questionable.
• PrOS aids in patient selection for ASAD, potentially avoiding unnecessary surgery.