Int J Sports Med 2018; 39(02): 141-147
DOI: 10.1055/s-0043-118339
Clinical Sciences
© Georg Thieme Verlag KG Stuttgart · New York

Concussion Recovery Phase Affects Vestibular and Oculomotor Symptom Provocation

Kelly M. Cheever
Temple University, Kinesiology, Philadelphia, United States
,
Jane McDevitt
Temple University, Kinesiology, Philadelphia, United States
,
Ryan Tierney
Temple University, Kinesiology, Philadelphia, United States
Temple University, Neuromotor Sciences Program, Philadelphia, United States
,
W. Geoffrey Wright
Temple University, Neuromotor Sciences Program, Philadelphia, United States
Temple University, Physical Therapy, Philadelphia, United States
› Author Affiliations
Further Information

Publication History



accepted after revision 02 August 2017

Publication Date:
30 November 2017 (eFirst)

Abstract

Vestibular and oculomotor testing is emerging as a valuable assessment in sport-related concussion (SRC). However, their usefulness for tracking recovery and guiding return-to-play decisions remains unclear. Therefore the purpose of this study was to evaluate their clinical usefulness for tracking SRC recovery. Vestibular and oculomotor assessments were used to measure symptom provocation in an acute group (n=21) concussed≤10 days, prolonged symptoms group (n=10) concussed ≥16 days (median=84 days), healthy group (n=58) no concussions in >6 months. Known-groups approach was used with three groups at three time points (initial, 2-week and 6-week follow-up). Provoked symptoms for Gaze-Stabilization (GST), Rapid Eye Horizontal (REH), Optokinetic Stimulation (OKS), Smooth-Pursuit Slow (SPS) and Fast (SPF) tests, total combined symptoms scores and near point convergence (NPC) distance were significantly greater at initial assessment in both injury groups compared to controls. Injury groups improved on the King-Devick test and combined symptom provocation scores across time. The acute group improved over time on REH and SPF tests, while the prolonged symptoms group improved on OKS. A regression model (REH, OKS, GST) was 90% accurate discriminating concussed from healthy. Vestibular and ocular motor tests give valuable insight during recovery. They can prove beneficial in concussion evaluation given the modest equipment, training and time requirements. The current study demonstrates that when combined, vestibular and oculomotor clinical tests aid in the detection of deficits following a SRC. Additionally, tests such as NPC, GST, REH, SPS, SPF OKS and KD provide valuable information to clinicians throughout the recovery process and may aid in return to play decisions.