The JBJS Quiz of the Month is a collection of 10 relevant questions from each orthopaedic subspecialty. The questions are drawn from JBJS Clinical Classroom, which houses over 4,500 questions and 3,100 learning resources. Take the Quiz to see how you score against your peers!

NOTE: This quiz does not earn users CME credits. The questions must be answered within Clinical Classroom to earn CME credits.

A female patient presents with Achilles tendon pain and is diagnosed with Achilles tendinopathy. She was recently treated with an oral antibiotic and you suspect that this antibiotic contributed to her Achilles tendon pain. Which of the following antibiotics did she most likely receive?  
    • Cephalexin
    • This first-generation cephalosporin is associated with gastrointestinal upset and hypersensitivity adverse effects.


    • Trimethoprim/sulfamethoxazole
    • There is no association between this medication and Achilles tendon disease. More commonly, patients experience gastrointestinal and neurological side effects with trimethoprim/sulfamethoxazole.


    • Ciprofloxacin
    • Fluoroquinolones are associated with Achilles tendinitis and rupture. The Food and Drug Administration (FDA) has added a “black box” warning to these antibiotics, and patients should be counseled regarding this associated complication.


    • Clindamycin
    • This antibiotic is commonly used as an alternative to cefazolin in patients with sensitivity to penicillin. Patients should be counseled of the increased risk of developing Clostridium difficile colitis