Spontaneous atlantoaxial osteomyelitis: no longer a rare case? Case report

Occipital fixation techniques and complications

Occipitocervical fusions in the adult population are most commonly indicated for neoplastic tumors invading the craniocervical junction (CCJ), rheumatological deformities compromising the foramen magnum, and traumatic dislocations resulting in occiput-C1 instability. Appropriate preoperative imaging will not only assist in identifying the pathology but also determine a treatment regimen for the diseased junction. A treatment algorithm for craniocervical disease is proposed. Lesions must first be identified as irreducible versus reducible: restore extension and/or distraction of the craniovertebral junction without injuring the neural elements. Irreducible lesions require decompression only, while reducible lesions require an added fusion. Techniques in fusion are broadly divided into external immobilization versus internal fixation. The former entails halo rings and tongs for a prolonged duration. Fixation surgeries vary from wiring to screw fixation of the occiput-C1 segment. Details of the operation as well as potential complications are discussed.

Minimally Invasive Surgical Approach for Odontoid Lesions: A Technical Description in a Case of High Cervical Osteomyelitis and Abscess

BACKGROUND

Cervical approaches to the dens are limited by the presence of several structures, including the spinal cord, vertebral arteries, C1 articular pillars, and C2 nerves. Surgical approaches to access the high anterior cervical spine classically encompass the extended anterior retropharyngeal route, transoral route, and extreme lateral route, each of which has its own pattern of morbidity or complications. Percutaneous procedures to drain infections in this area have a limited yield. Osteomyelitis of the dens is a rare but serious condition that is associated with significant mortality. Patients with cervical osteomyelitis and epidural abscess are likely to have significant coexistent medical comorbidities and are often poor candidates for extensive surgical procedures. A minimally invasive approach that gives access to the entire odontoid process would allow for more aggressive treatments and potentially even a complete odontoidectomy without resection of the C1 anterior arch.

CASE DESCRIPTION

We describe a minimally invasive approach to drainage and debridement of an atlantoaxial epidural abscess and osteomyelitis. Using minimally invasive techniques from a posterolateral trajectory in a cadaveric specimen, we were able to safely access the anterior epidural space, odontoid, and retropharynx. We then performed this approach in our patient who was unable to tolerate a large surgical procedure.

CONCLUSIONS

We developed, tested, and then applied a minimally invasive approach that combined tubular retractors with positioning of the head and neck to optimize the exposure in a patient with a complex abscess that involved the ventral epidural space, odontoid process, and retropharyngeal space. The abscesses were successfully drained along with local tissue debridement without complication. A posterolateral minimally invasive approach is a safe alternative in patients with an atlantoaxial epidural abscess, odontoid osteomyelitis, or retropharyngeal abscess with significant medical comorbidities who are unlikely to tolerate a more extensive surgery. It can also be used for resections of lesions of an oncologic nature and could even be used to resect pannus or os odontoideum, without necessitating an anterior approach or resection even of the C1 arch.

Upper Cervical Epidural Abscess in a Patient With Parkinson Disease: A Case Report and Review

To our knowledge, there are no reports in the literature of patients with Parkinson disease (PD) developing upper cervical spine infections. Our objective is to present a case of upper cervical epidural abscess in a patient with PD and to review upper cervical spine infection. We present the patient's presentation, physical examination, imaging findings, and management as well a review of the literature. A 66-year-old male with PD presented to the emergency department (ED) following referral by a neurologist for a presumed C2 fracture. The preceding history was 1 week of severe neck pain requiring a magnetic resonance imaging (MRI), which was initially interpreted as a C2 fracture. On admission from the ED, further review of the MRI appeared to show anterior prevertebral abscess and an epidural abscess. The patient's neurological examination was at baseline. In the span of 2 days, the patient developed significant motor weakness. A repeat MRI demonstrated expansion of the epidural collection and spinal cord compression. Surgical management consisting of C1 and C2 laminectomy, irrigation, and debridement from anterior and posterior approaches was performed. Postoperatively, the patient did not recover any motor strength and elected to withdraw care and died. Spinal epidural abscess requires a high index of suspicion and needs prompt recognition to prevent neurological impairment. Upper cervical spine infections are rare but can lead to lethal consequences.

Neonatal C1 TO C2 osteomyelitis leading to instability and neurological decline: novel treatment with occiput-C1-C2 fusion and occiput to thorax growing rods. A case report

BACKGROUND

Vertebral osteomyelitis of the upper cervical spine requiring surgical treatment in children is rare. Surgical treatment of the immature spine is commonly associated with certain risks and complications. We describe a unique treatment approach for a young child that required emergent stabilization of the upper cervical spine due to progressive instability caused by osteomyelitis.

METHODS

A 3-month-old infant with neurological decline from progressive instability of the occiput C1 and C2 was admitted for surgical treatment after failed bracing. The patient had reduction and occiput to C2 posterior fusion and segmental instrumentation, with nonsegmental instrumentation extending in the soft tissues from C2 to T4 with the intent of providing stabilization without fusion and permitting further growth.

RESULTS

The implants were removed 1 year after the original procedure. At 2 years following implant removal, he continued to have mild global developmental delay but was progressing well and was able to navigate independently with a posterior walker, using AFOs for support. Subaxial cervical motion and x-ray appearance were normal.

CONCLUSIONS

The technique used here to overcome the difficulty of providing secure immobilization of the craniocervical junction while not creating inadvertent fusion of the subaxial cervical spine may have application in other clinical situations.

LEVEL OF EVIDENCE

Level V.

Concomitant fungal and bacterial atlanto-axial osteomyelitis: a case report

Concomitant fungal and bacterial atlanto-axial osteomyelitis in immunocompetent individuals is rare. We report one such patient who underwent transoral anterior decompression and posterior occipital cervical fusion, together with antibiotic and antifungal treatment. At 16-month follow-up, the patient had made a full recovery with solid fusion. Prompt diagnosis requires a high degree of clinical suspicion, with timely use of modern imaging modalities. When the diagnosis is early, antibiotic treatment alone should suffice.

Pyogenic osteomyelitis of the atlas: a case report

STUDY DESIGN

Case report.

OBJECTIVE

To document our experience with conservative treatment of vertebral osteomyelitis of the atlas.

SUMMARY OF BACKGROUND DATA

Although several investigators have reported osteomyelitis in the upper cervical region, most of them included the odontoid process. This is a very rare case of successful conservative treatment of osteomyelitis of the atlas.

METHODS

A 37-year-old man with pyogenic osteomyelitis caused by Streptococcus was treated conservatively. After needle biopsy, the patient underwent a 3-month antibiotic course administrated both intravenously and orally with a cervical orthosis for 4 months.

RESULTS

The patient was pain free with no neurologic deficit at the 24-month follow-up, and CT scan showed remodeling of the lesion of the atlas.

CONCLUSION

Conservative treatment of pyogenic osteomyelitis of the atlas with antibiotics and immobilization was shown to be sufficient in this case.

Septic Arthritis of the Atlantoaxial Joint

Bacterial epidural abscess formation of cervical spine was rarely seen and all these cases were associated with osteomyelitis of the odontoid process. To the author's knowledge, only 1 case of septic arthritis of the C1-C2 lateral facet joint has been reported in the English literature. A 76-year-old woman presented with progressive neck pain and stiffness in the left side of her neck with fever. Coronal computed tomography clearly demonstrated destructive change of the atlantoaxial joint. Contrast magnetic resonance imaging demonstrated infection of the atlantoaxial joint resulting in epidural abscess formation. Because of lack of neurologic deficit, we treated her with halo-fixation together with appropriate antibiotics administration. The patient was successfully treated with antibiotics and immobilization. Septic arthritis of the lateral atlantoaxial joint should be added to the differential diagnosis of severe neck pain with fever, although it is very rare clinical entity. Early analysis of computerized tomography and magnetic resonance imaging although maintaining a high suspicion for this disease is mandatory to avoid delayed diagnosis and subsequent morbidity.

Pyogenic osteomyelitis of the odontoid process: single stage decompression and fusion

STUDY DESIGN

A case report.

OBJECTIVES

To document our experience with single stage decompression and fixation in the treatment of pyogenic osteomyelitis of the odontoid process.

SUMMARY OF BACKGROUND DATA

Although several investigators have reported a handful of these unusual cases, up until now, there have been no studies concerning a single stage solution in the surgical treatment of this pathology.

METHODS

Three patients with osteomyelitis of the odontoid process caused by Staphylococcus aureus underwent surgical treatment in single sessions (transoral decompression combined with posterior fusion as the second step of the operation). Following surgery, the patients underwent a 6-week antibiotic course administered both intravenously and orally. Furthermore, we recommended the use of a hard cervical collar for 8 weeks together with isometric rehabilitation of the cervical muscles. Currently, follow-up results are available for two patients.

RESULTS

On examination at 3 months, 6 months, and 1 year after the surgery, both patients had completely recovered with no neurologic deficit. Plain radiographs showed complete posterior fusion after 6 and 12 months, respectively.

CONCLUSIONS

We emphasize the advantages of our method in comparison with nonoperative treatment or multisession surgery. The single stage surgical solution led to a shortening of hospitalization time with no need for halo bracing, to excellent results with respect to C-spine stability and to better compliance from the patients.