Procedural similarities / Douglas Fenton and Jeffrey J. Peterson -- Shoulder injections / Jeffrey J. Peterson -- Elbow injections / Jeffrey J. Peterson and Douglas Fenton, and Leo Czervionke -- A surgeon's perspective / Peter M. Murray -- Wrist and hand injections / Jeffrey J. Peterson and Douglas Fenton, and Leo Czervionke -- Hip injections / Jeffrey J. Peterson -- A surgeon's perspective / Gavan P. Duffy -- Knee injections / Jeffrey J. Peterson -- A surgeon's perspective / Cedric J. Ortiguera -- Ankle and foot injections / Jeffrey J. Peterson -- A surgeon's perspective / James K. DeOrio -- Percutaneous image-guided biopsy and radiofrequency ablation / Jeffrey J. Peterson and Douglas Fenton, and Leo Czervionke -- A surgeon's perspective / Mary I. O'Connor.