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Knowledge For Spinal Needle

October 17,2023

Spinal needles are used to inject analgesia and/or anaesthetic directly into the CSF usually at a point below the second lumbar vertebra.

Spinal needles enter the cerebral spinal fluid (CSF) through the membranes surrounding the spinal cord.


An 18-gauge spinal needle is used to distend the joint and to locate the anterolateral portal. The spinal needle allows precise positioning under direct vision of the portals. The probes used in ankle arthroscopy should be about 1.5 mm in diameter to reach the small recesses of the gutters and to lift up under loose articular cartilage. An angled tip is desirable to touch over the dome-shaped talus and flat tibia. Another important instrument is the grasper. For the removal of small, loose bodies in soft tissue, a flat-tipped grasping forceps with fine teeth can be used. For larger loose bodies and soft-tissue fragments, a cup-shaped, jaw-grasping forceps with serrated edges can be used. Small-joint basket forceps with different tip designs help to remove soft-tissue and chondral fragments. Various small-joint curettes, either straight or curved, are available. These instruments are particularly valuable for removing osteochondral lesions and trimming of articular cartilage edges. Small-joint osteotomes and chisels are available to remove osteophytes and ossicles and can facilitate tissue elevation. Sometimes a small periosteal elevator can be useful. Motorized instruments can excise larger volumes of tissue than conventional hand instruments and suction it quickly out of the joint. They also can be used for debridement of large osteochondral defects. A power burr is useful for abrading or excising hard bone fragments. Holes can be drilled in the subchondral bone to enhance vascularization and to stimulate the repair process.



● Specially designed to administer lumbar/ subarachnoid anesthesia.
● Clear polycarbonate hub offers easy visualization.
● Transparent hub provides rapid detection of Cerebro-spinal fluid (CSF) flashback for confirming accurate placement.
● Sharp bevel design for low puncture force ensures minimal puncture trauma.
● Fine gauze needle design greatly reduces the risk of PDPH (Post Dura Puncture Headache).
● Conical tip imparts superior tactile feedback.
● High flow rate enables faster CSF flashback.
● Aggressive anesthetic distribution upon injection.
● Snugly fit stylet into the respective needle facilitates no tissue coring.
● Color coded stylet enables rapid size identification.
● Sterile, individually packed in peelable pouch.