ArticleJSES international2026
Long-term follow-up of functional electromyostimulation-augmented home exercise after primary reverse total shoulder arthroplasty: a prospective longitudinal assessment of the original intervention cohort.
Article in JSES international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
Background: Reverse total shoulder arthroplasty (rTSA) reliably reduces pain and restores function, but shoulder function typically plateaus within the first post-operative year and gradually declines thereafter. Motion-triggered functional electromyostimulation (FES) enhances muscle activation and has shown short-term functional benefits in patients after rTSA. The long-term durability of these effects remains unclear, though sustained improvements would increase the clinical value of this time-limited intervention. Therefore, the aim of this study was to evaluate short-term outcomes after at least six months after completion of a FES program and compare them with baseline and immediate postintervention results. Methods: Ten of the initially 14 patients previously enrolled in the intervention arm of a prospective randomized controlled trial were re-evaluated after at least six months after completing a 6-week home-based, deltoid-focused FES program initiated 1 year after primary rTSA. Clinical outcomes included Constant Score (primary outcome), Subjective Shoulder Value, active range of motion, deltoid strength, and scapular kinematics assessed using identical methods to the previous randomized controlled trial. Results: Ten participants (71%) completed the follow-up (FU) at a median of 18 months (range, 6-24 months) after the intervention. The mean Constant Score improved from 65.7 ± 13.2 at baseline to 79.5 ± 7.9 postintervention ( Conclusion: In this single-arm FU, functional outcomes that improved after the FES-augmented program were maintained at mid-term reassessment. Because the control group was not re-evaluated, treatment-specific durability cannot be inferred. No deterioration was observed after discontinuation of device use. Larger controlled studies with long-term comparative FU are required before conclusions regarding treatment-specific benefit can be drawn.
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