Clinically Feasible Quantitative Assessments of Dynamic Scapular Motion: A Scoping Review.

Background: Scapular kinematics and stabilization are crucial for optimal upper extremity function. Disruptions in normal scapular motion, also rereferred to as dyskinesis, are associated with injuries like subacromial impingement and glenohumeral instability. Clinically feasible methods to assess dynamic scapular motion are essential for accurate diagnosis and rehabilitation but remain limited in both reliability and functionality.

Purpose: The purpose of this scoping review was to systematically identify and summarize the existing literature on clinically feasible quantitative methods that assess active dynamic scapular motion in at least one plane. It seeks to identify tools, technologies, and protocols used in clinical settings, highlighting gaps in current research.

Study design: Scoping Review.

Methods: A systematic search was conducted in PubMed, CINAHL, and SPORTDiscus databases. Studies that utilized clinically feasible methods to assess scapular motion in at least one plane, and with continuous motion or at least two actively achieved and maintained positions (dynamic), were included. Data were extracted regarding instrument types, measurement methods, dynamic motions assessed, and reliability/validity results.

Results: Of the 62 studies meeting inclusion criteria, digital inclinometers were the most frequently used tools, followed by gravity inclinometers and measuring tapes. Scapular upward rotation was the most commonly assessed motion, with a majority of studies focusing on static or basic dynamic tasks rather than functional or sport-specific activities. Validity results varied, with moderate to strong correlations in some tools, but reliability was inconsistent, particularly in dynamic settings.

Conclusions: Clinically feasible methods for assessing dynamic scapular motion exist, but their reliability and ability to capture continuous motion during functional movements are limited. Further research is needed to develop tools that can assess scapular motion during dynamic, multi-planar, and functional tasks, enhancing clinical decision-making for injury prevention and rehabilitation.

Level of evidence: 2b.