Platelet-rich plasma: current concepts and application in sports medicine.

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Abstract

[Indexed for MEDLINE] 12. BMJ Case Rep. 2019 Feb 28;12(2):e227348. doi: 10.1136/bcr-2018-227348. 'Carpal tunnel syndrome' and 'tennis elbow' as prodromes for granulomatosis with polyangiitis (formerly Wegener's granulomatosis). Geier C(1), Steed K(1)(2). Author information: (1)Division of Rheumatology, Columbia University, New York, New York, USA. (2)Division of Rheumatology, James J Peters VA Medical Center, Bronx, New York, USA. A 62-year-old man presented with excruciating joint pains, back stiffness and numbness of his hands and feet. Over the past 18 months, he had experienced similar episodes for which the diagnoses of bilateral carpal tunnel syndrome and lateral epicondylitis had been made. Physical examination revealed polyarticular arthritis affecting the shoulders, wrists and right knee. Palpable purpura overlying the calves and ankles was present. Laboratory tests showed markedly elevated erythrocyte sedimentation rate and C-reactive protein in the setting of negative blood and urine cultures. Rheumatoid factor and antinuclear antibodies were negative. Chest CT demonstrated bilateral pulmonary infiltrates. A punch biopsy of the rash showed leukocytoclastic vasculitis. Anti-proteinase-3 titers returned strongly positive. A diagnosis of granulomatosis with polyangiitis was made. Treatment with high-dose steroids, followed by rituximab resulted in normalisation of inflammatory markers with subsequent resolution of joint pains, rash and pulmonary infiltrates and improvement of neuropathic symptoms. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ. DOI: 10.1136/bcr-2018-227348 PMCID: PMC6398777