| Autor: |
Stephen L. Barrett, Bailey Boyd, Sequioa DuCasse, Wajdi Nassier, Nia Mitchell, Artinder P. Nagra, Miki Dalmau-Pastor, Dwayne S. Yamasaki, Scott Nickerson |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
BMC Musculoskeletal Disorders, Vol 25, Iss 1, Pp 1-7 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1471-2474 |
| DOI: |
10.1186/s12891-024-07972-3 |
| Popis: |
Abstract Background Focal entrapment of the common fibular (peroneal) nerve (CFN) is the most common nerve entrapment in the lower extremity. Accurate diagnosis can be difficult due to co-existent pathology such as low back pathology. A 1% lidocaine block of CFN is often used to confirm the local entrapment pathology and demonstrate possibility of pain relief. A surprising, unexpected and temporary strengthening of CFN supplied ankle and foot muscles is occasionally produced, termed the Phoenix sign. Aetiology of this phenomenon has been puzzling, but restoration of neural circulation and nutrition via improved local blood flow has been postulated to be responsible. Methods This is a double-blinded, randomized, prospective controlled trial of 20 patients, comparing 2 vasodilating agents and their ability to produce the Phoenix effect. Ultrasound guided infiltration of 0.3 mL 1% lidocaine or papaverine HCl 10 mg/mL was executed adjacent to CFN. Motor strength pre- infiltration and 4 min post-infiltration were measured for anterior compartment muscles utilizing MRC manual motor testing reported on a 0–5 scale. The extensor hallucis longus (EHL) muscle proved to be the most significant. Results Average motor strength of the EHL improved from 2.2 (+/-0.40) to 4.9 (+/-0.32).) in the lidocaine group. In the papaverine group, pre-infiltration EHL motor strength averaging 2.1 (+/-0.93) improved to 4.4 (+/- 1.01) post-infiltration. Papaverine and lidocaine produced similar statistically significant increases in muscle strength (p = |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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