Ultrasound-guided Lavage of Calcific Deposits of the Rotator Cuff

Inclusion Criteria:

• Patient aged 18 years and older
• Pain in the deltoid region worsening with activities above shoulder level and/or atnight with a calcific deposit
• Ultrasound evaluation of the calcific deposit with type I or II characteristics, asolitary conformation, a minimum size of 1.0 x 0.5 x 0.4cm (length x width x depth)and without clear signs of resorption (PDUS grade 0 - I°, see study procedure).
• In case of multiple calcific deposits, it has to be warranted that the other depositsare smaller than the minimum size of 1.0 x 0.5 x 0.4cm and with no signs of PDUSsignals.
• Qualification for more intensive treatment on account of no clinical improvement aftera minimum of 3 months with conservative treatment (physical therapy and oralanti-inflammatory drugs).
• able to understand the content of the patient information / consent form in German andgive consent to take part in the project

Exclusion Criteria:

• Previous UGPL or surgery of the affected shoulder
• Treatment with subacromial injection (SAI) or ESWT in the three months beforeinclusion
• Other causes of shoulder complaints (e.g. rotator cuff tear, frozen shoulder,inflammatory arthritis, bursitis, …)
• Intervention failure (no retrieval of calcific material, leakage of the injectedsaline, disruption of the calcific rim or distribution of calcific material)
• Patients with a language barrier hindering questionnaire completion
• Pregnancy