This is the most common mode of biopsy followed in dedicated bone tumour centres.
- The procedure is done under anaesthesia (local or general).
- Image guidance (Fluoroscope or CT or Ultrasound) is sued to obtain representative sample.
- Scarring is minimal (maximum of 1 cm incision is used).
- Sutures or staples are not required routinely.
- A Jamshidi needle is used, varying from 8G ~13G.
- Multiple cores (3-5 no’s), each measuring at least 1 cm is harvested.
- It has a tapered distal tip and wider stem which does not crush the tissues.
- Manual pressure is applied to the area to prevent any bleeding and compression bandage is used for 2 days
The advantages are
- Small surgical scar
- Short procedure time (10~20 minutes)
- Can be performed on OPD basis or minimal sedation as in day care procedures
- Low cost
- Easily reproducible
- Small area is sampled compared to open biopsy
- Amount of sample is less compared to open biopsy
- The representative area may be missed if image guidance is not taken in some cases.
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