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Hematogenous pyogenic facet joint infection
A J Muffoletto1, L M Ketonen, J T Mader
1Department of Orthopaedics and Rehabilitation, University of Texas Medical Branch, Galveston, Texas 77555-0792, USA.
Study Design:
Retrospective.
Objectives:
To determine the incidence, clinical presentation, diagnostic laboratory values, imaging characteristics, and optimal treatment of hematogenous pyogenic facet joint infections.
Summary Of Background Data:
There are 27 documented cases of hematogenous pyogenic facet joint infections. Data regarding incidence, clinical presentation, diagnosis, and treatment response are incomplete because of the paucity of reported cases.
Methods:
This is a retrospective study of all cases of hematogenous pyogenic facet joint infection treated at one institution. Data from previous publications were combined with the present series to identify pertinent clinical characteristics and response to treatment.
Results:
A total of six cases (4%) of hematogenous pyogenic facet joint infection were identified of 140 cases of hematogenous pyogenic spinal infection at our institution. Combining all reported cases reveals the following: The average patient age is 55 years. Ninety-seven percent of cases occur in the lumbar spine. Epidural abscess formation complicates 25% of the cases of which 38% develop severe neurologic deficit. Erythrocyte sedimentation rate and C-reactive protein are elevated in all cases. Staphylococcus aureus is the most common infecting organism. Magnetic resonance imaging is accurate in identifying the septic joint and associated abscess formation. Percutaneous drainage of the involved joint has a higher rate of success (85%) than treatment with antibiotics alone (71%), but the difference is not significant (P = 0.37).
Conclusions:
Hematogenous pyogenic facet joint infection is a rare but underdiagnosed clinical entity. Facet joint infections may be complicated by abscess formation in the epidural space or in the paraspinal muscles. Uncomplicated cases treated with percutaneous drainage and antibiotics may fare better than those treated with antibiotics alone. Cases complicated by an epidural abscess and severe neurologic deficit should undergo immediate decompressive laminectomy.
Insights
Hematogenous pyogenic facet joint infections are rare but often underdiagnosed. Early diagnosis and treatment, including percutaneous drainage and antibiotics, improve outcomes, while severe cases require surgical intervention.
Area of Science:
- Spine surgery
- Infectious diseases
- Radiology
Background:
- Hematogenous pyogenic facet joint infections are rare, with limited data on incidence, presentation, and treatment.
- Only 27 cases were previously documented, highlighting the need for further research.
Purpose of the Study:
- To determine the incidence, clinical presentation, diagnostic values, imaging characteristics, and optimal treatment for these infections.
- To combine institutional data with published cases for a comprehensive analysis.
Main Methods:
- Retrospective review of cases treated at a single institution.
- Inclusion of previously published cases to augment the dataset.
- Analysis of clinical characteristics, laboratory values, imaging findings, and treatment responses.
Main Results:
- Six cases (4%) identified out of 140 spinal infections. Average age 55, 97% lumbar spine involvement.
- 25% developed epidural abscesses, 38% severe neurologic deficits. Staphylococcus aureus was common.
- MRI accurately identified infections. Percutaneous drainage (85% success) showed higher, though not statistically significant, success than antibiotics alone (71%).
Conclusions:
- Hematogenous pyogenic facet joint infection is rare, underdiagnosed, and can lead to epidural abscesses and neurologic deficits.
- Percutaneous drainage with antibiotics may offer better outcomes than antibiotics alone for uncomplicated cases.
- Immediate decompressive laminectomy is crucial for cases with epidural abscess and severe neurologic compromise.
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