Operative Details: MAST Fusion for Osteomyelitis

Lali Sekhon, MD, PhD, FRACS, FICS
Neurosurgeon
SpineNevada
Reno, NV

Operative Details

The patient was brought to the operating room and general anaesthesia was administered. After administration of intravenous antibiotic, the patient was placed into the prone position on the Jackson operating table. A digital fluoroscope was draped into the surgical field. A 2 cm incision was then made over the pedicle of L4 on the right. Using AP and lateral films, the left L4 pedicle was then cannulated using and 11G bone biopsy needle (see below, Figure 3):

bone biopsy needle placement pedicle

Figure 3

Under fluoroscopic guidance, guide wires were then placed into both the L2 and L4 vertebral bodies (see below, Figure 4):

guide wire placement

Figure 4

The L4 pedicle was then tapped and a 7.5 mm x 45 mm Sextant® (Medtronic-Sofamor Danek, Memphis, TN) screw was then placed. A 6.5 mm x 50 mm screw was then placed in the L2 pedicle (see below, Figures 5a, 5b):

pedicle screw placement using sextant

Figure 5a

pedicle screw placement under fluoroscopy

Figure 5b

A rod was then passed through the heads of both screws using the Sextant® apparatus (see below, Figures 6a, 6b):

rod insertion using sextant

Figure 6a

rod insertion using sextant under fluoroscopy

Figure 6b

The heads were secured and a similar procedure was performed on the left. The final construct is shown below (Figures 7a, 7b):

screw heads secured

Figure 7a

screw construct

Figure 7b

The entire procedure was performed through 6 incisions 2 cm in length each (see below, Figure 8):

postoperative incisions

Figure 8

There were no problems intraoperatively and no appreciable blood loss. The patient was transferred to the ward uneventfully. Total operating time was 70 minutes.

Last Updated: 08/12/2005