Answer to the letter to the editor of M. Zhang, et al. concerning "Effect of thoracic mobilization on acromio-humeral distance, thoracic kyphosis angle, pain and shoulder function in patients with subacromial impingement syndrome: a randomized controlled trial" by Calik M, et al. (Eur spine J [2025]; doi:10.1007/s00586-025-09144-w).