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. 2021 Jun 1;56(6):586-593.
doi: 10.4085/276-20.

Reliability and Validity of a Clinical Assessment Tool for Measuring Scapular Motion in All 3 Anatomical Planes

Oliver A Silverson  1 , Nicole G Lemaster  1 , Carolyn M Hettrich  2 , Nicholas R Heebner  1 , Tim L Uhl  1
Affiliations

Reliability and Validity of a Clinical Assessment Tool for Measuring Scapular Motion in All 3 Anatomical Planes

Oliver A Silverson et al. J Athl Train. .

Abstract

Context: A single clinical assessment device that can be used to objectively measure scapular motion in each anatomical plane is not currently available. The development of a novel electric goniometer would allow scapular motion in all 3 anatomical planes to be quantified.

Objective: To investigate the reliability and validity of an electric goniometer for measuring scapular motion in each anatomical plane during upper extremity elevation.

Design: Cross-sectional study.

Setting: Laboratory.

Patients or other participants: Sixty participants (29 women, 31 men; age = 30 ± 14 years, height = 1.73 ± 0.10 m, mass = 75.32 ± 16.90 kg) recruited from the general population.

Intervention(s): An electric goniometer was used to record clinical measurements of scapular position at rest and total arc of motion (excursion) during active upper extremity elevation in 2 testing sessions separated by several days. Measurements were recorded independently by 2 examiners. In 1 session, scapular motion was recorded simultaneously using a 14-camera, 3-dimensional optical motion-capture system.

Main outcome measure(s): Reliability analysis included examination of clinical measurements for scapular position at rest and excursion during each condition. Both the intrarater reliability between testing sessions and the interrater reliability recorded in the same session were assessed using intraclass correlation coefficients (ICCs [2,3]). The criterion validity was examined by comparing the mean excursion values of each condition recorded using the electric goniometer and the 3-dimensional optical motion-capture system. Validity was assessed by evaluating the average difference and root mean square error.

Results: The between-sessions intrarater reliability was moderate to good (ICC [2,3] range = 0.628-0.874). The within-session interrater reliability was moderate to excellent (ICC [2,3] range = 0.545-0.912). The average difference between total excursion values recorded using the electric goniometer and the 3-dimensional optical motion-capture system ranged from -7° to 4°, and the root mean square error ranged from 7° to 10°.

Conclusions: The reliability of scapular measurements was best when a standard operating procedure was used. The electric goniometer provided an accurate measurement of scapular excursions in all 3 anatomical planes during upper extremity elevation.

Keywords: psychometric values; shoulder; upper extremity.

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Figures

Figure 1
Figure 1
A, Identification of one-third of the distance between the root of the scapular spine and the posterior acromial angle. Orientation of the electric goniometer (EasyAngle; Meloq AB) for measuring scapular motion in the B, frontal plane; C, transverse plane; and D, sagittal plane, with inset illustrating calibration in the sagittal plane.
Figure 2
Figure 2
Measurement of scapular motion in the frontal plane during upper extremity elevation to 120° in the scapular plane.
Figure 3
Figure 3
Standardized marker setup for 3-dimensional optical motion capture. The scapular and thorax joint coordinate system is shown with positive motion in the direction of the arrows.
See this image and copyright information in PMC

References

    1. Halder AM, Itoi E, An KN. Anatomy and biomechanics of the shoulder. Orthop Clin North Am. 2000;31(2):159–176. doi: 10.1016/S0030-5898(05)70138-3. - DOI - PubMed
    1. Ludewig PM, Phadke V, Braman JP, Hassett DR, Cieminski CJ, Laprade RF. Motion of the shoulder complex during multiplanar humeral elevation. J Bone Joint Surg Am. 2009;91(2):378–389. doi: 10.2106/JBJS.G.01483. - DOI - PMC - PubMed
    1. McClure PW, Michener LA, Sennett BJ, Karduna AR. Direct 3-dimensional measurement of scapular kinematics during dynamic movements in vivo. J Shoulder Elbow Surg. 2001;10(3):269–277. doi: 10.1067/mse.2001.112954. - DOI - PubMed
    1. Warner JJ, Micheli LJ, Arslanian LE, Kennedy J, Kennedy R. Scapulothoracic motion in normal shoulders and shoulders with glenohumeral instability and impingement syndrome: a study using Moiré topographic analysis. Clin Orthop Relat Res. 1992;285:191–198. doi: 10.1097/00003086-199212000-00024. - DOI - PubMed
    1. Kibler WB, Ludewig PM, McClure PW, Michener LA, Bak K, Sciascia AD. Clinical implications of scapular dyskinesis in shoulder injury: the 2013 consensus statement from the “scapular summit.”. Br J Sports Med. 2013;47(14):877–885. doi: 10.1136/bjsports-2013-092425. - DOI - PubMed

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