Single incision thenar muscle reconstruction using the free functional pronator quadratus flap.
Flap surgery
Free functional muscle transfer
Plastic surgery
Reconstructive microsurgery
Reconstructive surgery
Thenar muscle loss
Thenar muscle reconstruction
Thumb opposition
Journal
BMC surgery
ISSN: 1471-2482
Titre abrégé: BMC Surg
Pays: England
ID NLM: 100968567
Informations de publication
Date de publication:
12 Jul 2021
12 Jul 2021
Historique:
received:
09
05
2021
accepted:
07
06
2021
entrez:
13
7
2021
pubmed:
14
7
2021
medline:
15
7
2021
Statut:
epublish
Résumé
Injuries to the thenar muscle mass or the thenar branch of the median nerve and resulting loss of thumb opposition lead to a massive impairment of hand function. For decades, reconstructive approaches were based on tendon transfers. To broaden the reconstructive repertoire, we present the free functional pronator quadratus flap as a viable alternative for functional reconstruction and provide a specification for its indication. We demonstrate our surgical technique to a single incision reconstruction using the free functional pronator quadratus flap. Based on a series of three patients, which were analyzed for hand function using Kapandji's score and the angle of Bourrel, grip strength and nerve conduction velocity in a two year follow up, we present an indication algorithm. After successful reinnervation of all flaps, we found an improvement of Kapandji's score from 4.3 ± 0.94 preoperatively, to 8.7 ± 0.47 after two years. Accordingly, the angle of Bourrel decreased from 75.75 ± 3.45 degrees to 36.96 ± 3.68 degree. Grip strength also improved from 14 ± 2.2 kg to 26.2 ± 1.2 kg. No impairment of wrist pronation was observed. We found excellent functional recovery of thumb opposition and strength, showing similar or even superior results compared to results from tendon transfers. With the benefit of a single incision surgery and therefore minimal donor site morbidity, this free functional muscle transfer is a viable alternative to classic tendon transfers.
Sections du résumé
BACKGROUND
BACKGROUND
Injuries to the thenar muscle mass or the thenar branch of the median nerve and resulting loss of thumb opposition lead to a massive impairment of hand function. For decades, reconstructive approaches were based on tendon transfers. To broaden the reconstructive repertoire, we present the free functional pronator quadratus flap as a viable alternative for functional reconstruction and provide a specification for its indication. We demonstrate our surgical technique to a single incision reconstruction using the free functional pronator quadratus flap. Based on a series of three patients, which were analyzed for hand function using Kapandji's score and the angle of Bourrel, grip strength and nerve conduction velocity in a two year follow up, we present an indication algorithm.
RESULTS
RESULTS
After successful reinnervation of all flaps, we found an improvement of Kapandji's score from 4.3 ± 0.94 preoperatively, to 8.7 ± 0.47 after two years. Accordingly, the angle of Bourrel decreased from 75.75 ± 3.45 degrees to 36.96 ± 3.68 degree. Grip strength also improved from 14 ± 2.2 kg to 26.2 ± 1.2 kg. No impairment of wrist pronation was observed.
CONCLUSION
CONCLUSIONS
We found excellent functional recovery of thumb opposition and strength, showing similar or even superior results compared to results from tendon transfers. With the benefit of a single incision surgery and therefore minimal donor site morbidity, this free functional muscle transfer is a viable alternative to classic tendon transfers.
Identifiants
pubmed: 34253207
doi: 10.1186/s12893-021-01308-x
pii: 10.1186/s12893-021-01308-x
pmc: PMC8276497
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
310Informations de copyright
© 2021. The Author(s).
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