BAK/Proximity™ Anterior
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The BAK/Proximity™ Interbody Fusion System consists of both implants
and associated implantation instruments. The Proximity™
Implant is a hollow, porous, square-threaded device made of titanium alloy
(Ti-6Al-4V). Seven sizes of implants are available. The Proximity
System has completed rigorous FDA clinical studies and is available
for anterior open (ALIF), laparoscopic (ALIF) and posterior (PLIF)
procedures. The studies have shown high fusion rates, quick pain
reduction, rapid functional improvement, and much lower reoperation
rates compared to conventional fusion methods. |
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Case Study This 53 year old female patient presented three months post L5-S1 discectomy with recurrent left sciatica after over exertion and two weeks of incapacitating pain. The physical examination showed a positive left straight leg raise and an absent left ankle reflex. She had decreased sensation in the left S1 nerve root distribution and had weakness of the peritoneal muscles. Review of the AP and lateral X-rays revealed decreased disc height and a retrolisthesis at the L5-S1 level. An MRI with and without gadolinium showed a large left sided recurrent disc herniation at the L5-S1 level with impingement of the S1 nerve root, decreased disc height and degenerative changes. Templating at the L4-5 level showed distraction should be obtained at 12mm. A BAK/L and Proximity Implant were placed to allow two cages in the disc space. |
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