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  • Title: A comparison of traditional digital blocks and single subcutaneous palmar injection blocks at the base of the finger and a meta-analysis of the digital block trials.
    Author: Yin ZG, Zhang JB, Kan SL, Wang P.
    Journal: J Hand Surg Br; 2006 Oct; 31(5):547-55. PubMed ID: 16930788.
    Abstract:
    A randomised, double-blinded, controlled trial was performed to compare traditional digital blocks with single subcutaneous palmar injection blocks at the base of the finger. A search for randomised controlled trials of digital blocks through MEDLINE, EMBASE, Cochrane Controlled Trials Register and CBM was conducted and a meta-analysis including the current trial was performed. The current trial showed no difference between traditional digital blocks and single subcutaneous palmar injection bocks at the base of the finger in respect of injection pain and time to anaesthesia. The meta-analysis suggests that traditional digital blocks and single subcutaneous palmar injection blocks are similar with regard to injection pain and are less painful than the transthecal digital block. The palmar techniques, including single subcutaneous palmar block and transthecal block, carry a risk of not anaesthetising the dorsum of the digit adequately, particularly the dorsum of the thumb and the proximal phalanx of the fingers.
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