These can present with a palpable defect in the muscle or tendon. However, swelling in the area may make this difficult to appreciate. These injuries sometimes require surgery to reattach the damaged muscle and tendon. An x-ray may be helpful to rule out a fracture or dislocation as the cause of pain.
The most likely cause is an airborne bacteria called Serratia Marcescens. This bacteria is common and generally grows in damp conditions such as those found in bathrooms and kitchens. Serratia produces a pinkish film on surfaces that are regularly moist and subject to humid conditions.he most likely cause is an airborne bacteria called Serratia Marcescens. This bacteria is common and generally grows in damp conditions such as those found in bathrooms and kitchens. Serratia produces a pinkish film on surfaces that are regularly moist and subject to humid conditions.
There are other biochemical tests that help to identify Serratia marcescens in the lab. It is negative for the methyl red test due to their production of 2, 3 - butanediol and ethanol, but positive for the Voges-Proskauer test, which shows an organismâs ability to convert pyruvate to acetoin [4].ydrolysis of casein is not a common trait and is therefore useful in the differentiation of Serratia marcescens from the 438 strains of Enterobacteriaceae and Pseudomonadaceae families [12]. Serratia marcescens has the reproducible capability to break down casein producing a clearing on milk agar plates.