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Fig. 1. Study design and follow up. PENG: pericapsular nerve group, IAI: intra-articular injection, NRS: numerical rating scale, WOMAC: Western Ontario and McMaster University Osteoarthritis Index, HHS: Harris hip score, QAQ: quantitative analgesic questionnaire, CSI: central sensitization inventory.
Korean J Pain 2023;36:195~207 https://doi.org/10.3344/kjp.22325
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