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Infectious Diseases of the Musculoskeletal System

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General Orthopaedics and Basic Science

Part of the book series: Orthopaedic Study Guide Series ((ORTHSTUDY))

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References

  1. Zervou FN, Zacharioudakis IM, Mylonakis E. ACP Journal Club. 6 weeks of antibiotics was noninferior to 12 weeks for clinical cure in pyogenic vertebral osteomyelitis. Ann Intern Med. 2015;162(10):JC7. https://doi.org/10.7326/ACPJC-2015-162-10-007.

    Article  PubMed  Google Scholar 

  2. Suda AJ, Richter A, Abou-Nouar G, Jazzazi M, Tinelli M, Bischel OE. Arthrodesis for septic arthritis of the ankle: risk factors and complications. Arch Orthop Trauma Surg. 2016;136(10):1343–8. https://doi.org/10.1007/s00402-016-2520-y.

    Article  CAS  PubMed  Google Scholar 

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Author information

Authors and Affiliations

  1. Department of Internal Medicine, Boston Medical Center, Boston, MA, USA

    Theofanis Kalathas

  2. Division of Sports Medicine, Department of Orthopedic Surgery, Boston Children’s Hospital, Harvard Medical School, Boston, MA, USA

    Nikolaos K. Paschos

Authors
  1. Theofanis Kalathas
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  2. Nikolaos K. Paschos
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Editor information

Editors and Affiliations

  1. Harvard Medical School, Boston Children’s Hospital, Boston, MA, USA

    Nikolaos K. Paschos

  2. Royal National Orthopaedic Hospital, Institute of Orthopaedics and Musculo-Skeletal Science, U.C.London, Stanmore, Middlesex, UK

    George Bentley

Review Questions

Review Questions

How long does the antimicrobial treatment of osteomyelitis typically last?

  • 1–2 weeks.

  • 2–4 weeks.

  • 4–6 weeks.

  • 6–8 weeks.

Which of the following sentences regarding osteomyelitis is correct?

  • The most sensitive test for diagnosing osteomyelitis is MRI.

  • X-ray should always be performed first when osteomyelitis suspected.

  • Blood cultures are typically positive in osteomyelitis.

  • Suppressive antimicrobial therapy typically lasts 6–9 weeks.

  • The most common way of spread is hematogenous.

  • The risk for pathologic fracture is decreased in osteomyelitis.

How long does it take for a regular X-ray to show abnormalities in osteomyelitis?

  • 2–4 days

  • 5–7 days

  • 7–10 days

  • 10–14 days

  • 14–17 days

  • 17–21 days.

What is the most common cause of early (within 3 months of implantation) prosthetic joint infection?

  • S. aureus.

  • S. epidermidis.

  • N. gonorrhea.

  • Strep. pyogenes.

  • P. aeruginosa.

What is the most common route of joint infection?

  • Contiguous spread.

  • Via the bloodstream.

  • Direct inoculation.

What is the most common cause of septic arthritis in a sexually active 22-year-old man?

  • S. aureus.

  • S. epidermidis.

  • N. gonorrhea.

  • Strep. pyogenes.

  • P. aeruginosa.

What is the most common joint affected by septic arthritis?

  • Hip.

  • Knee.

  • Shoulder.

  • First interphalangeal joint.

Which of the following sentences regarding septic arthritis is correct?

  • It is more common in young adults.

  • The best initial test is X-ray of the affected joint.

  • Patients with osteoarthritis have lower risk to be affected.

  • S. epidermidis is the most common culprit in delayed-onset prosthetic joint infection.

Which of the following is typically the treatment of choice for septic arthritis?

  • IV antibiotics for 3–4 weeks.

  • IV antibiotics for 4–6 weeks.

  • IV antibiotics for 1–2 weeks.

  • Oral antibiotics for 4–6 weeks.

  • Direct installation of antibiotics into the joint cavity 2–3 times per day.

Which of the following patients is most likely to have been affected by necrotizing fasciitis?

  • A 70-year-old male.

  • A 70-year-old female.

  • A 40-year-old male.

  • A 40-year-old female.

Which type of necrotizing fasciitis is caused by Clostridium perfringens (gas gangrene or clostridial myonecrosis)?

  • Type I.

  • Type II.

  • Type III.

What is the imaging modality of choice in diagnosing necrotizing fasciitis?

  • U/S.

  • X-ray.

  • CT scan.

  • MRI scan.

  • Scintigraphy.

Which of the following is the main diagnostic method for cellulitis?

  • Physical exam.

  • Blood culture.

  • Gram stain.

  • CBC.

  • CRP levels.

  • Ultrasound.

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Kalathas, T., Paschos, N.K. (2019). Infectious Diseases of the Musculoskeletal System. In: Paschos, N., Bentley, G. (eds) General Orthopaedics and Basic Science. Orthopaedic Study Guide Series. Springer, Cham. https://doi.org/10.1007/978-3-319-92193-8_12

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  • DOI: https://doi.org/10.1007/978-3-319-92193-8_12

  • Published:

  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-92191-4

  • Online ISBN: 978-3-319-92193-8

  • eBook Packages: MedicineMedicine (R0)

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