The Experts below are selected from a list of 78 Experts worldwide ranked by ideXlab platform
Brian Yin Ting Yue - One of the best experts on this subject based on the ideXlab platform.
-
The functional free innervated medial gastrocnemius flap.
Journal of reconstructive microsurgery, 2014Co-Authors: Damien Grinsell, Brian Yin Ting YueAbstract:The functional free innervated medial gastrocnemius flap has been described in four previous articles for the management of foot drop, Volkmann contracture, and upper limb Muscle defects. We expand the indications by describing the use of free innervated medial gastrocnemius musculocutaneous flap in functional reconstruction of the tongue and upper limb musculature. The right medial gastrocnemius Muscles were raised as myocutaneous flaps in six patients. These flaps were elevated in the supine position and the flaps included a motor nerve from the sciatic nerve and a sensory nerve from the sural nerve. The average size of flap was 15 × 8 cm. The flaps were transferred successfully with no flap loss and showed consistent reinnervation during follow-up. In particular, all patients who underwent tongue reconstruction exhibited intelligible speech and returned to full oral diet with no aspiration. In patients who underwent upper limb Muscle reconstructions, there was moderate to full restoration of power. All donor sites exhibited excellent symmetry in both power and appearance to the contralateral calf. To our knowledge, this study is the first to describe the use of the innervated medial gastrocnemius free flap in the reconstruction of the tongue and deltoid. The advantages of this flap include its thin reliable skin paddle, strong bulky Bipennate Muscle, and low donor site morbidity. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.
-
The functional free innervated medial gastrocnemius flap.
Journal of Reconstructive Microsurgery, 2014Co-Authors: Damien Grinsell, Brian Yin Ting YueAbstract:Background The functional free innervated medial gastrocnemius flap has been described in four previous articles for the management of foot drop, Volkmann contracture, and upper limb Muscle defects. We expand the indications by describing the use of free innervated medial gastrocnemius musculocutaneous flap in functional reconstruction of the tongue and upper limb musculature. Methods The right medial gastrocnemius Muscles were raised as myocutaneous flaps in six patients. These flaps were elevated in the supine position and the flaps included a motor nerve from the sciatic nerve and a sensory nerve from the sural nerve. The average size of flap was 15 × 8 cm. Results The flaps were transferred successfully with no flap loss and showed consistent reinnervation during follow-up. In particular, all patients who underwent tongue reconstruction exhibited intelligible speech and returned to full oral diet with no aspiration. In patients who underwent upper limb Muscle reconstructions, there was moderate to full restoration of power. All donor sites exhibited excellent symmetry in both power and appearance to the contralateral calf. Conclusions To our knowledge, this study is the first to describe the use of the innervated medial gastrocnemius free flap in the reconstruction of the tongue and deltoid. The advantages of this flap include its thin reliable skin paddle, strong bulky Bipennate Muscle, and low donor site morbidity.
Damien Grinsell - One of the best experts on this subject based on the ideXlab platform.
-
The functional free innervated medial gastrocnemius flap.
Journal of reconstructive microsurgery, 2014Co-Authors: Damien Grinsell, Brian Yin Ting YueAbstract:The functional free innervated medial gastrocnemius flap has been described in four previous articles for the management of foot drop, Volkmann contracture, and upper limb Muscle defects. We expand the indications by describing the use of free innervated medial gastrocnemius musculocutaneous flap in functional reconstruction of the tongue and upper limb musculature. The right medial gastrocnemius Muscles were raised as myocutaneous flaps in six patients. These flaps were elevated in the supine position and the flaps included a motor nerve from the sciatic nerve and a sensory nerve from the sural nerve. The average size of flap was 15 × 8 cm. The flaps were transferred successfully with no flap loss and showed consistent reinnervation during follow-up. In particular, all patients who underwent tongue reconstruction exhibited intelligible speech and returned to full oral diet with no aspiration. In patients who underwent upper limb Muscle reconstructions, there was moderate to full restoration of power. All donor sites exhibited excellent symmetry in both power and appearance to the contralateral calf. To our knowledge, this study is the first to describe the use of the innervated medial gastrocnemius free flap in the reconstruction of the tongue and deltoid. The advantages of this flap include its thin reliable skin paddle, strong bulky Bipennate Muscle, and low donor site morbidity. Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.
-
The functional free innervated medial gastrocnemius flap.
Journal of Reconstructive Microsurgery, 2014Co-Authors: Damien Grinsell, Brian Yin Ting YueAbstract:Background The functional free innervated medial gastrocnemius flap has been described in four previous articles for the management of foot drop, Volkmann contracture, and upper limb Muscle defects. We expand the indications by describing the use of free innervated medial gastrocnemius musculocutaneous flap in functional reconstruction of the tongue and upper limb musculature. Methods The right medial gastrocnemius Muscles were raised as myocutaneous flaps in six patients. These flaps were elevated in the supine position and the flaps included a motor nerve from the sciatic nerve and a sensory nerve from the sural nerve. The average size of flap was 15 × 8 cm. Results The flaps were transferred successfully with no flap loss and showed consistent reinnervation during follow-up. In particular, all patients who underwent tongue reconstruction exhibited intelligible speech and returned to full oral diet with no aspiration. In patients who underwent upper limb Muscle reconstructions, there was moderate to full restoration of power. All donor sites exhibited excellent symmetry in both power and appearance to the contralateral calf. Conclusions To our knowledge, this study is the first to describe the use of the innervated medial gastrocnemius free flap in the reconstruction of the tongue and deltoid. The advantages of this flap include its thin reliable skin paddle, strong bulky Bipennate Muscle, and low donor site morbidity.
Aymeric Y T Lim - One of the best experts on this subject based on the ideXlab platform.
-
independent function in a split flexor carpi radialis transfer
Journal of Hand Surgery (European Volume), 2004Co-Authors: Aymeric Y T Lim, Amitabha Lahiri, Barry P Pereira, Prem V Kumar, Laylay TanAbstract:In a patient requiring tendon transfer after radial nerve palsy, the flexor carpi radialis, a Bipennate Muscle, was split longitudinally into 2 compartments along the length of the aponeurosis extending proximally from the distal tendon to provide independent finger and thumb extension. This case report shows that the 2 compartments of a Bipennate Muscle in the forearm may have separate innervation, allowing transfer for independent functions.
-
Properties of the two neuromuscular compartments in a split Bipennate Muscle
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2004Co-Authors: Barry P Pereira, Aymeric Y T Lim, V. Prem Kumar, Jessie A. C. Tan, Bee-leng TanAbstract:Bipennate Muscles may be split along their distal aponeurosis, dividing each into two compartments. These sub-Muscle units may be used in tendon transfers. This paper presents the contractile properties of the two sub-units of the flexor carpi ulnaris in a macaca fascicularis, after it was split by up to 80% of its length. The sub-Muscle units were electrically stimulated and found to have independent isometric contraction, with minimal contraction recorded from the non-stimulated sub-unit. Also, the sum of the forces measured from each unit when stimulated individually, was found to be greater than the force of the whole Muscle, given the same isometric conditions. The distal aponeurosis which is common allows force transmission between the compartments. Splitting the Muscle along this distal aponeurosis alters this function and the force capacity of the Muscle, providing a new potential for using the sub-units as grafts for tendon transfers.
Jonathan D R Houghton - One of the best experts on this subject based on the ideXlab platform.
-
the locomotor system of the ocean sunfish mola mola l role of gelatinous exoskeleton horizontal septum Muscles and tendons
Journal of Anatomy, 2018Co-Authors: John Davenport, Natasha D Phillips, Elizabeth Cotter, Lawrence E Eagling, Jonathan D R HoughtonAbstract:Adult ocean sunfish are the heaviest living teleosts. They have no axial musculature or caudal fin. Propulsion is by unpaired dorsal and anal fins; a pseudocaudal fin ('clavus') acts as a rudder. Despite common perception, young sunfish are active predators that swim quickly, beating their vertical fins in unison to generate lift-based propulsion and attain cruising speeds similar to salmon and marlin. Here we show that the thick subcutaneous layer (or 'capsule'), already known to provide positive buoyancy, is also crucial to locomotion. It provides two compartments, one for dorsal fin musculature and one for anal fin Muscles, separated by a thick, fibrous, elastic horizontal septum that is bound to the capsule itself, the roof of the skull and the dorsal surface of the short vertebral column. The compartments are braced sagittally by bony haemal and neural spines. Both fins are powered by white Muscles distributed laterally and red Muscles located medially. The anal fin Muscles are mostly aligned dorso-ventrally and have origins on the septum and haemal spines. Dorsal fin Muscles vary in orientation; many have origins on the capsule above the skull and run near-horizontally and some Bipennate Muscles have origins on both capsule and septum. Such Bipennate Muscle arrangements have not been described previously in fishes. Fin Muscles have hinged tendons that pass through capsular channels and radial cartilages to insertions on fin rays. The capsule is gelatinous (89.8% water) with a collagen and elastin meshwork. Greasy in texture, calculations indicate capsular buoyancy is partly provided by lipid. Capsule, septum and tendons provide elastic structures likely to enhance Muscle action and support fast cruising.
Barry P Pereira - One of the best experts on this subject based on the ideXlab platform.
-
independent function in a split flexor carpi radialis transfer
Journal of Hand Surgery (European Volume), 2004Co-Authors: Aymeric Y T Lim, Amitabha Lahiri, Barry P Pereira, Prem V Kumar, Laylay TanAbstract:In a patient requiring tendon transfer after radial nerve palsy, the flexor carpi radialis, a Bipennate Muscle, was split longitudinally into 2 compartments along the length of the aponeurosis extending proximally from the distal tendon to provide independent finger and thumb extension. This case report shows that the 2 compartments of a Bipennate Muscle in the forearm may have separate innervation, allowing transfer for independent functions.
-
Properties of the two neuromuscular compartments in a split Bipennate Muscle
Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2004Co-Authors: Barry P Pereira, Aymeric Y T Lim, V. Prem Kumar, Jessie A. C. Tan, Bee-leng TanAbstract:Bipennate Muscles may be split along their distal aponeurosis, dividing each into two compartments. These sub-Muscle units may be used in tendon transfers. This paper presents the contractile properties of the two sub-units of the flexor carpi ulnaris in a macaca fascicularis, after it was split by up to 80% of its length. The sub-Muscle units were electrically stimulated and found to have independent isometric contraction, with minimal contraction recorded from the non-stimulated sub-unit. Also, the sum of the forces measured from each unit when stimulated individually, was found to be greater than the force of the whole Muscle, given the same isometric conditions. The distal aponeurosis which is common allows force transmission between the compartments. Splitting the Muscle along this distal aponeurosis alters this function and the force capacity of the Muscle, providing a new potential for using the sub-units as grafts for tendon transfers.