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Micrometric Swivelling Clamp For LRS
Q&A
Q1: What is the primary function of the Micrometric Swivelling Clamp in an LRS system?
A1: Its primary function is to provide a stable yet adjustable connection between the orthopedic wires or half-pins and the main Linear Rail System (LRS) rod. The “swivelling” capability allows surgeons to position pins at various, often compound, angles to achieve optimal bone purchase and construct stability, which is crucial for complex deformity corrections and limb lengtheningQ2: How does the “micrometric” feature benefit the surgical procedure and patient outcome?
Q2: What’s the advantage of the Micrometric Swivelling Clamp For LRS?
A2: The micrometric (fine-scale measurement) adjustment allows for extremely precise, incremental changes in the pin’s position and orientation. This is critical for achieving perfect fracture reduction, fine-tuning the alignment of bone segments, or making accurate daily adjustments during the distraction phase of limb lengthening, leading to better final outcomes.
Q3: Why is the swivelling function important?
A3: The swivelling design allows multi-directional angulation of the pins relative to the rail, enabling accurate alignment with the bone’s anatomical axis and easier correction of deformities.
Q4: How does it improve surgical precision compared to standard clamps?
A4: The micrometric mechanism allows gradual, repeatable adjustments in small increments, reducing the risk of over-correction or instability during bone distraction.
Q5: Can this clamp be used with both Schanz pins and smooth wires (Olive wires)?
A5: This depends on the specific clamp design. Many modern swiveling clamps are versatile and feature different collets or chucks that can accommodate both Schanz pins (half-pins) and smooth or Olive wires. The surgeon must select the correct chuck for the specific pin/wire type being used.
Q6: What types of bone procedures is this specific clamp most commonly used for?
A6: It is essential for complex procedures requiring multi-planar control, such as:
Limb Lengthening: Precisely controlling the distraction rate and axis.
Deformity Correction: Correcting angular, rotational, and translational deformities simultaneously.
Non-Union Treatment: Providing rigid, multi-directional stability for compromised bone healing.
Reconstruction after Trauma or Tumor Resection: Allowing for customized fixation in compromised bone stock.
Q7: Can surgeons adjust the clamp postoperatively?
A7: Yes, the clamp allows controlled postoperative fine-tuning without removing the fixator, enabling real-time correction of alignment or distraction rate.
Q8: How does this advanced clamp compare to a standard, fixed clamp in terms of cost and complexity?
A8: The micrometric swiveling clamp is significantly more complex in design and manufacturing, making it more expensive than a standard fixed clamp. It also adds a layer of complexity to the surgical procedure, requiring a deeper understanding of frame biomechanics and a meticulous technique for tightening. However, the benefit is unparalleled intra-operative flexibility and post-operative adjustability.
Q9: How should the Micrometric Swivelling Clamp be maintained and sterilized?
A9: It should be cleaned and lubricated regularly, then sterilized by autoclaving before each use. The micrometric threads must remain free of debris to ensure smooth adjustment.
