Carpal Tunnel Injection
| Carpal Tunnel Injection | |
|---|---|
| Indication | Carpal Tunnel Syndrome |
| Syringe | 1mL |
| Needle | 23G 30mm |
| Steroid | 20mg triamcinolone |
| Local | nil |
| Volume | 0.5mL |
Anatomy
The flexor retinaculum attaches to four areas. Namely the pisoform, the scaphoid, the hook of the hamate, and the trapezium. The proximal edge lies at the distal wrist crease. The median nerve normally lies under the palmaris longus tendon (if present) at the mid wrist, and is medial to the flexor carpi radialis (FCR) tendon. The FCU attaches to the pisiform. The distal wrist crease crosses the pisiform
Indications
- Injection for Carpal Tunnel Syndrome.
Contraindications
Equipment
The injection of 5mLs of D5W was more effective than corticosteroid in one RCT.[1] Some authors have reported using 10mLs.[2]
Technique
- Position:Hand palm up
- Needle entry site options
- Identify the midpoint along the proximal wrist crease, between the FCR and median nerve.
- Place your index pulp lateral to the pisiform, in line with the 4th finger, slide the finger proximally till the tip of your nail is on the distal nail crease, inject at the mid point of nail tip.
- Insert the needle then angle proximal to distal at a 45 degree angle.
- Slide distally until it is under the midpoint of the retinaculum (feel it puncture the retinaculum)
- Reposition medially if hit nerve
- Inject as a bolus
- Have patient open and close hand to spread the injectate around the carpal tunnel.
Complications
Mild exacerbation of symptoms immediately or in the hours following injection. Soft tissue atrophy. Ulnar artery injury. Median nerve injury.
Aftercare
Rest for one week. Use a night splint. Repeat injections can be done.
Videos
See Also
External Links
References
- ↑ Wu et al.. Randomized double-blinded clinical trial of 5% dextrose versus triamcinolone injection for carpal tunnel syndrome patients. Annals of neurology 2018. 84:601-610. PMID: 30187524. DOI.
- ↑ Tsung-Ying Li, Si-Ru Chen, Yu-Ping Shen, Chih-Ya Chang, Yu-Chi Su, Liang-Cheng Chen, Yung-Tsan Wu, Long-term outcome after perineural injection with 5% dextrose for carpal tunnel syndrome: a retrospective follow-up study, Rheumatology, , keaa361, https://doi.org/10.1093/rheumatology/keaa361
Literature Review
Literature Review
- Reviews from the last 7 years: review articles, free review articles, systematic reviews, meta-analyses, NCBI Bookshelf
- Articles from all years: PubMed search, Google Scholar search.
- TRIP Database: clinical publications about evidence-based medicine.
- Other Wikis: Radiopaedia, Wikipedia Search, Wikipedia I Feel Lucky, Orthobullets,
