There was one randomized control trial (Noyes et al- refer below) comparing continuous cryotherapy versus ice pack in 40 patients that did not demonstrate a significant difference in pain scores, quality of sleep or narcotic use. This study was a mix of patients who received both anatomic and reverse shoulder arthroplasty and was not exclusive to patients who received shoulder arthroplasty for glenohumeral osteoarthritis.
Strength of Evidence (evidence quality): No reliable evidence
Benefits & Harms:
Uncommon potential harm entails prolonged ice pack exposure leading to skin burn.
Cost Effectiveness/Resource Utilization:
Cold therapy units may not be covered by insurance and may add cost to the patient.
Feasibility:
It is feasible for patients to manage post-operative swelling with cold therapy units or ice packs.
Future Research:
More high-quality evidence is needed focusing on the effectiveness of cold therapy units in patients who receive anatomic shoulder arthroplasty for osteoarthritis.
Additional References:
Noyes, M.P., Denard, P.J., Continuous cryotherapy vs ice following total shoulder arthroplasty: a randomized control trial. CryAm J Orthop. 2018;47(6).