[Lumbar interspinous non-fusion techniques: comparison between Coflex™ and Wallis]

Area of Science:

• Spine surgery
• Orthopedic surgery
• Degenerative spine disease

Background:

• Lumbar spine degenerative diseases are common, leading to pain and disability.
• Non-fusion interspinous devices offer an alternative to traditional fusion surgery.
• Coflex and Wallis are two such devices used for lumbar decompression.

Purpose of the Study:

• To compare the short-term clinical outcomes of Coflex and Wallis interspinous non-fusion devices.
• To evaluate the efficacy of these devices in patients with lumbar stenosis and/or disc herniation.

Main Methods:

• A retrospective study comparing 43 Coflex implantations and 50 Wallis implantations.
• Patients presented with lumbar stenosis, lumbar disc herniation, or both.
• Clinical outcomes were assessed using the Japanese Orthopaedic Association (JOA) Score, Oswestry Disability Index (ODI), and Visual Analog Scale (VAS).

Main Results:

• Both Coflex and Wallis demonstrated significant improvements in JOA Score, ODI, and VAS post-operatively.
• Coflex implantation had a shorter average operating time (64.55 min) and less blood loss (81.82 ml) compared to Wallis (82.71 min, 89.66 ml).

Conclusions:

• Interspinous non-fusion techniques using Coflex and Wallis provide favorable short-term clinical results.
• These devices are effective treatment options for patients suffering from lumbar spine degenerative diseases.