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Post-traumatic bone and/or joint limb infections due to Clostridium spp. - 02/10/12

Doi : 10.1016/j.otsr.2012.03.019 
A. Ibnoulkhatib a, J. Lacroix b, A. Moine c, M. Archambaud b, E. Bonnet d, e, J.-M. Laffosse a,

The members of the CRIOAC-GSOf

a Musculoskeletal System Institute, Department of Orthopaedics and Trauma Surgery, Rangueil Teachning Hospital Center, Toulouse, France 
b Federated Biological Institute, Microbiology Laboratory, Toulouse Teachning Hospital Center, Toulouse, France 
c Musculoskeletal System Institute, Department of Orthopaedics and Trauma Surgery, Purpan Teachning Hospital Center, Toulouse, France 
d Infectious and Tropical Diseases Department, Purpan Teachning Hospital Center, Toulouse, France 
e Joseph Ducuing Hospital, Toulouse, France 
f Complex Bone and Joints Infections Referencing Center of South-Western France (CRIOAC-GSO), Toulouse Teachning Hospital Center, Toulouse, France 

Corresponding author. Musculoskeletal System Institute, Department of Orthopaedics and Trauma Surgery, Rangueil Teachning Hospital Center, Toulouse, France, 1, avenue Jean Poulhès, TSA 50032, 31059 Toulouse cedex 9, France, Private Tel.: +33 6 07 10 13 43, Professional Tel.: +33 5 61 32 33 76, fax: +33 5 61 32 22 32.

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Summary

Background

Clostridium spp. are saprophytic Gram-positive bacteria found in soil and capable of generating endospores. Spore germination occurs when environmental conditions are favorable. Clostridium spp. can cause infections of compound fractures and deep wounds contaminated from soil micro-organisms.

Hypothesis

Clostridium spp. infections of traffic-related injuries are particularly severe events whose outcome is uncertain even with aggressive medical and surgical treatment.

Materials and methods

We retrospectively reviewed 12 patients (median age, 45 years) with Clostridium spp. bone and/or joint infections complicating compound limb fractures with soil contamination and extensive soft-tissue damage. Prophylactic amoxicillin-clavulanic acid therapy was administred, followed by emergency surgical wound debridment and lavage. Fracture fixation was performed immediately in nine patients (external in four and internal in five) or at a later time on three patients. The immediate outcome was unfavourable in all 12 cases, requiring early reoperation after a median of 10 days (range, 5–25 days).

Results

Median time to Clostridium strain identification was 14.5 days (range, 5–160). All infections were polymicrobial. Surgical wound excision, hardware removal (in four cases), and antibiotic therapy produced a favourable outcome in one patient, with no recurrence after 2 years of follow-up; the outcome was unfavourable in 11 cases, with delayed fracture union, septic non-union, impaired healing, and/or chronic sinus tract drainage. Several second-line treatments were used in these 11 patients: intramedullary nailing without bone grafting in four patients, with three failures; decortication and grafting in two patients, with failure in both; nailing with decortication in one patient, who had a good outcome; and the induced membrane procedure described by Masquelet in four patients, all of whom had good outcomes. After a median follow-up of 24 months (range, 18–53 months), the bone infection had subsided in eight patients. The remaining four patients had septic non-union.

Discussion

Clostridium spp. infections are particularly severe. The diagnosis is delayed and identification of the organism is challenging. The treatment is difficult and results in unfavorable outcomes in one-third of cases. The identification of Clostridium in specimens from an osteoarticular infection indicates a need for extremely extensive and aggressive surgical resection, as spore resistance may impair the in vivo efficacy of antimicrobial agents.

Level of evidence

IV (retrospective cohort study).

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Keywords : Wound infection, Bone infection, Anaerobic, Clostridium, Spores


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Vol 98 - N° 6

P. 696-705 - octobre 2012 Retour au numéro
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