Anu V Ranade1, Rajalakshmi Rai2, Ashwin R Rai3, Prameela M Dass3, Mangala M Pai3, Rajanigandha Vadgaonkar3. 1. Department of Basic Sciences, College of Medicine, University of Sharjah, Sharjah, United Arab Emirates. 2. Department of Anatomy, Center for Basic Sciences, Kasturba Medical College Mangalore, Manipal University, Manipal, India. Electronic address: rajalakshmi.rai@manipal.edu. 3. Department of Anatomy, Center for Basic Sciences, Kasturba Medical College Mangalore, Manipal University, Manipal, India.
Abstract
BACKGROUND: The latissimus dorsi (LD) is often used for tendon transfers to treat massive irreparable posterosuperior rotator cuff tears. The operation requires the LD tendon to be mobilized to reduce tension on the tendon. In that respect, any connection between the LD tendon and contiguous muscles may hamper tendon mobility and affect the surgical outcome. The goal of this study was to document the occurrence of connections between the LD and adjacent muscles and nerves. METHODS: We studied the scapular region on 48 embalmed cadavers. The skin and superficial fascia were removed according to Cunningham's manual of dissection, and the muscle was exposed. RESULTS: It was found that the LD and teres major (TM) muscles are connected by muscle fibers in 10% of the cadavers studied. Another vital discovery was that in some cadavers, the LD tendon was penetrated by a nerve. CONCLUSION: Fascial connections between the LD and TM are well known, but these muscle links are comparatively unusual. From the results of this study, one should pay particular attention to muscle links between the LD and TM during dissection of the LD for transfer. It can also be suggested that during transfer surgery, the LD tendon should be cautiously examined for the possibility of a nerve penetrating it.
BACKGROUND: The latissimus dorsi (LD) is often used for tendon transfers to treat massive irreparable posterosuperior rotator cuff tears. The operation requires the LD tendon to be mobilized to reduce tension on the tendon. In that respect, any connection between the LD tendon and contiguous muscles may hamper tendon mobility and affect the surgical outcome. The goal of this study was to document the occurrence of connections between the LD and adjacent muscles and nerves. METHODS: We studied the scapular region on 48 embalmed cadavers. The skin and superficial fascia were removed according to Cunningham's manual of dissection, and the muscle was exposed. RESULTS: It was found that the LD and teres major (TM) muscles are connected by muscle fibers in 10% of the cadavers studied. Another vital discovery was that in some cadavers, the LD tendon was penetrated by a nerve. CONCLUSION: Fascial connections between the LD and TM are well known, but these muscle links are comparatively unusual. From the results of this study, one should pay particular attention to muscle links between the LD and TM during dissection of the LD for transfer. It can also be suggested that during transfer surgery, the LD tendon should be cautiously examined for the possibility of a nerve penetrating it.
Authors: Lukas Ernstbrunner; Malik Jessen; Marco Rohner; Manuel Dreu; Samy Bouaicha; Karl Wieser; Paul Borbas Journal: BMC Musculoskelet Disord Date: 2021-04-16 Impact factor: 2.362