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Osteomyelitis in Adults

Bone infection in adults requiring prolonged antimicrobial therapy and often surgical debridement.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Internal Medicine department. Book Appointment →

What is Osteomyelitis in Adults?

Osteomyelitis is an inflammatory and infectious process of bone caused by pyogenic organisms, mycobacteria, or fungi. In adults, it most commonly arises from contiguous spread (e.g., from a wound, ulcer, or surgical site), direct inoculation (trauma, surgery), or vascular insufficiency (diabetic foot). Hematogenous osteomyelitis, common in children, occurs less frequently in adults and typically affects the vertebrae.

Staphylococcus aureus (including MRSA) is the most common pathogen. Other organisms include coagulase-negative staphylococci, Streptococcus species, Gram-negative bacilli (especially in vertebral osteomyelitis and post-surgical), Pseudomonas aeruginosa (puncture wounds, IV drug use), and anaerobes (diabetic foot, bite wounds). Special hosts have unique pathogens: Salmonella in sickle cell, Brucella in endemic areas, Mycobacterium tuberculosis (Pott disease), and fungi in immunocompromised.

The classification scheme (Cierny-Mader) categorizes osteomyelitis by anatomic involvement (medullary, superficial, localized, diffuse) and host status (A: normal, B: compromised, C: treatment worse than disease). Chronic osteomyelitis is characterized by sequestrum (dead bone), involucrum (new bone formation), sinus tracts, and biofilm-protected bacteria, making cure challenging.

Symptoms

Localized bone pain (often deep, persistent)
Erythema, warmth, swelling over affected bone
Fever and chills (acute osteomyelitis)
Sinus tract drainage with pus or bone fragments
Limited range of motion in adjacent joints
Open wound or ulcer not healing (foot ulcer in diabetes)
Vertebral osteomyelitis: back pain, neurological deficits
Constitutional symptoms: malaise, weight loss (chronic)
Failed prior antibiotic courses
Post-surgical infection: persistent drainage, dehiscence
Pathological fracture (rare)

Risk Factors

Diabetes mellitus with foot ulcers (most common in adults)
Peripheral vascular disease
Open fracture or surgical hardware
Prosthetic joint
Intravenous drug use
Sickle cell disease (Salmonella predilection)
Immunocompromised state (HIV, transplant, chronic steroids)
Hemodialysis access (S. aureus bacteremia)
Recent dental work or distant infection (hematogenous)
Trauma with open wound or puncture
Pressure ulcer with bone exposure
Smoking
Chronic kidney or liver disease
Radiation therapy
Older age

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Persistent bone pain with fever or systemic symptoms
  • Non-healing wound with exposed bone or probe-to-bone
  • Red, swollen, warm area over bone
  • Persistent drainage from a sinus or surgical wound
  • Back pain with fever or neurological deficits
  • Diabetic foot ulcer not improving
  • Recent IV drug use with bone pain
  • Failed antibiotic course for soft tissue infection
  • Pain over prosthetic joint or hardware

Treatment Methods

01
Multidisciplinary management: infectious disease, orthopedics, vascular, plastic surgery as needed
02
Diagnostic workup: blood cultures, ESR/CRP, imaging (X-ray, MRI is gold standard)
03
Bone biopsy/culture before antibiotics when feasible (avoid empirical when possible)
04
Surgical debridement: removal of necrotic bone, drainage of abscesses (often essential)
05
Empirical antibiotics after cultures: vancomycin plus broad Gram-negative coverage
06
Targeted therapy based on culture: typically 4-6 weeks IV for acute, longer for chronic
07
Oral switch with high-bioavailability agents (fluoroquinolones, linezolid, TMP-SMX) when appropriate
08
Vertebral osteomyelitis: 6-12 weeks therapy, neurosurgical consultation if cord compromise
09
Hardware retention with prolonged therapy + rifampin (S. aureus): for stable hardware
10
Hardware removal: for chronic infection with biofilm
11
Vascular optimization: revascularization for ischemic foot
12
Wound care: VAC therapy, off-loading, advanced dressings
13
Reconstruction: muscle flaps, bone grafting after infection control
14
Diabetes management: glycemic control, foot care education
15
Long-term follow-up: ESR/CRP normalization, imaging, clinical exam
16
Suppressive antibiotics: chronic cases with retained hardware
17
Hyperbaric oxygen: adjunctive in select chronic refractory cases

Which Department to Visit?

You can visit our Enfeksiyon Hastalıkları department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.