DOI: 10.5176/2382-6096_CMMA14.19
Authors: Rajanigandha Vadgaonkar , Murlimanju BV, Latha V Prabhu
Abstract: Objective: The objectives of the present study were to study the morphological anatomy of the neurovascular supply of the latissimus dorsi muscle in cadaveric material of the south Indian population.
Methods: We performed the dissections of 19 latissimus dorsi muscles from the adult cadavers. The morphology and branching pattern of the thoraco dorsal nerve and thoraco dorsal artery were studied. The distance of the branching of these neurovascular structures from their origin was analyzed and tabulated.
Results: Among our specimens, 15 muscles (78.9{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}) had two divisions from the thoraco dorsal nerve, 1 muscle (5.3{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}) had three divisions and 3 muscles (15.8{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}) had four divisions. The mean distance of the division of the thoraco dorsal nerve from its site of origin from the brachial plexus was 79.9 ± 15.6 mms. The thoraco dorsal artery was branching from the subscapular artery in 14 muscles (73.7{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}), from the lateral thoracic artery in 2 muscles (10.5{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}) and in the remaining 3 muscles (15.8{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}), it was coming from a common trunk of subscapular and lateral thoracic arteries. The thoraco dorsal artery was divided into 2 branches in 10 muscles (52.6{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}), 3 branches in 6 muscles (31.6{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}), 4 branches in 2 muscles (10.5{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}), five branches in 1 muscle (5.26{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465}). The mean distance of the branching of the thoraco dorsal artery from its site of origin was 97.3 ± 22.9 mms. It was observed that the thoracodorsal nerve branched before the thoracodorsal artery. The distance from the first branch of nerve to the first branch of artery was 17.4 ± 7.3 mms.
Conclusion: The anatomical knowledge of the neurovascular supply of latissimus dorsi is surgically important. We believe that the present study has provided additional information on the arterial supply and innervation of the latissimus dorsi muscle. The data of the present study are essential to the plastic surgeons while harvesting the neurovascular pedicle flaps.
Keywords: latissimus dorsi, neurovascular, pedicle, thoracodorsal
Updating...