Labels:text | screenshot OCR: Resident and Staff Physician Patient Education Chart Gastrocenemius Muscle Soleus Muscle Achilles Tendon Retrocalcaneal Bursa Calcaneus Fat Pad Achilles Tendinitis Inflammation occurs in a layer of tissue surrounding the tendon. Nodules may form. "Pump bump" is a bursa that forms over the bone, caused by shoe irritation. Reprinted with permission from Resident and Staff Physician (c) 1991-92, 1993 by Romaine Pierson Publishers, Inc.