Mectron
in Spine Surgery

Advanced Application of PIEZOSURGERY® in Spine Surgery

Spine surgery demands the highest level of precision and safety, particularly when operating in close proximity to the dura mater, spinal cord, and critical nerve roots. Traditional rotary instruments and manual bone punches carry inherent risks of dural tears, nerve injury, and mechanical trauma. The introduction of PIEZOSURGERY® technology has revolutionized spinal osteotomies by utilizing modulated ultrasonic micro-vibrations specifically tuned to cut mineralized bone tissue while leaving soft tissues completely unharmed.

This selective cut capability is rooted in the physical properties of ultrasonic frequencies. By operating in the 24,000 to 36,000 Hz range, the piezoelectric device creates a micrometric cutting action (vibration amplitude between 20 and 200 µm). This precise mechanical action ensures that only dense, mineralized tissue is ablated. If the insert accidentally contacts the dura mater or a nerve root, the soft tissue simply absorbs the vibration without being lacerated or damaged.

Micrometric Precision and the Cavitation Effect

The micrometric cut of PIEZOSURGERY® allows surgeons to perform delicate bone removal with unparalleled tactile feedback. Unlike high-speed drills that require significant hand pressure and can easily "skip" or walk across the bone surface, the piezoelectric insert requires minimal pressure. This results in greater surgical control, especially during complex procedures like a cervical laminectomy or the removal of osteophytes in narrow intervertebral spaces.

Furthermore, the system utilizes a continuous irrigation flow that interacts with the ultrasonic vibrations to create a cavitation effect. This phenomenon produces micro-bubbles that implode, creating a cleansing effect that washes away blood and bone debris. The result is a virtually blood-free surgical site, providing the surgeon with maximum intra-operative visibility in anatomically complex and confined regions.

Clinical Procedures Benefiting from Piezoelectric Technology

• Laminotomy and Laminectomy: The removal of the lamina to decompress the spinal cord is significantly safer. The selective nature of the ultrasonic cut prevents incidental dural tears, a common complication with traditional Rongeurs or Kerrison punches.
• Anterior Cervical Discectomy and Fusion (ACDF): Operating in the cervical spine requires extreme caution. PIEZOSURGERY® allows for safe access and precise removal of posterior osteophytes near the posterior longitudinal ligament and cervical nerve roots.
• Deformity Corrections and Spinal Fusion: In cases of scoliosis or kyphosis, precise bone cuts are required for osteotomies (e.g., Pedicle Subtraction Osteotomy). The "cold cut" of the piezoelectric device prevents thermal necrosis of the bone, preserving living osteocytes and promoting faster, more reliable bone fusion.

Improved Postoperative Outcomes and Patient Recovery

The biological benefits of PIEZOSURGERY® extend beyond the operating room. Because the technology avoids the thermal damage and micro-fracturing associated with traditional bone saws and drills, the bone healing response is significantly enhanced. Clinical studies have consistently shown that patients undergoing piezoelectric spine surgery experience reduced postoperative pain, minimized swelling, and a faster return to normal activities. For hospitals, this translates to reduced complication rates, shorter ICU stays, and an overall improvement in the quality of surgical care.