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Rehman Irving - One of the best experts on this subject based on the ideXlab platform.

Soares, Nayane Peixoto - One of the best experts on this subject based on the ideXlab platform.

  • Origens e distribuições dos nervos supra-escapular, subescapulares cranial e caudal e toracodorsal do tamanduá-bandeira (Myrmecophaga tridactyla Linnaeus, 1758)
    Universidade Federal de Uberlândia, 2013
    Co-Authors: Soares, Nayane Peixoto
    Abstract:

    O tamanduá-bandeira, representante da família Myrmecophagidae, possui ampla distribuição geográfica e está ameaçado de extinção devido a seus hábitos de vida e a ocupação humana, que está restringindo sua área de vida. Objetivou-se descrever as origens e distribuições dos nervos supra-escapular, subescapulares cranial e caudal e toracodorsal em tamanduá-bandeira (Myrmecophaga tridactyla). Foram utilizados três exemplares adultos, sendo uma fêmea e dois machos, com peso aproximado de 40 Kg, fixados em solução de formaldeído a 10%. Nos três espécimes estudados o nervo supraescapular originou-se dos ramos ventrais do sexto (C6) e sétimo (C7) nervos espinhais cervicais e enviou ramos para os músculos supra-espinhal e infraespinhal. Os nervos subescapulares cranial e caudal originaram-se dos ramos ventrais dos sexto (C6) e sétimo (C7) nervos espinhais cervicais e distribuíramse, respectivamente, nos músculos subescapular e redondo maior. O nervo toracodorsal teve origem nos ramos ventrais dos sexto (C6), sétimo (C7) e oitavo (C8) nervos espinhais cervicais e primeiro nervo espinhal torácico (T1), e emitiu ramos para o músculo grande dorsal.The giant anteater, Myrmecophagidae representative of the family, has a wide geographic distribution and is threatened with extinction due to their habits of life and human occupation, which is restricting its area of life. This study aimed to describe the origins and distributions of nerves suprascapular, subscapular and thoracodorsal cranial and caudal in giant anteater (Myrmecophaga tridactyla). We used three adult specimens, one female and two males, weighing approximately 40 kg, fixed in formaldehyde solution 10%. In the three specimens studied the suprascapular nerve originated from the ventral rami of the sixth (C6) and seventh (C7) cervical spinal nerves and sent branches to the Muscles supraspinatus and infraspinatus. Subscapular nerves cranial and caudal originated from the ventral rami of the sixth (C6) and seventh (C7) cervical spinal nerves and distributed to the subscapularis Muscle and Teres Major Muscle. The thoracodorsal nerve originated in the ventral rami of the sixth (C6), seventh (C7) and eighth (C8) and first cervical spinal nerves (T1) thoracic spinal nerve, and sent branches to the latissimus dorsi Muscle

  • Origens e distribuições dos nervos supra-escapular, subescapulares cranial e caudal e toracodorsal do tamanduá-bandeira (Myrmecophaga tridactyla Linnaeus, 1758)
    'EDUFU - Editora da Universidade Federal de Uberlandia', 2013
    Co-Authors: Soares, Nayane Peixoto
    Abstract:

    The giant anteater, Myrmecophagidae representative of the family, has a wide geographic distribution and is threatened with extinction due to their habits of life and human occupation, which is restricting its area of life. This study aimed to describe the origins and distributions of nerves suprascapular, subscapular and thoracodorsal cranial and caudal in giant anteater (Myrmecophaga tridactyla). We used three adult specimens, one female and two males, weighing approximately 40 kg, fixed in formaldehyde solution 10%. In the three specimens studied the suprascapular nerve originated from the ventral rami of the sixth (C6) and seventh (C7) cervical spinal nerves and sent branches to the Muscles supraspinatus and infraspinatus. Subscapular nerves cranial and caudal originated from the ventral rami of the sixth (C6) and seventh (C7) cervical spinal nerves and distributed to the subscapularis Muscle and Teres Major Muscle. The thoracodorsal nerve originated in the ventral rami of the sixth (C6), seventh (C7) and eighth (C8) and first cervical spinal nerves (T1) thoracic spinal nerve, and sent branches to the latissimus dorsi Muscle.Mestre em Ciências VeterináriasO tamanduá-bandeira, representante da família Myrmecophagidae, possui ampla distribuição geográfica e está ameaçado de extinção devido a seus hábitos de vida e a ocupação humana, que está restringindo sua área de vida. Objetivou-se descrever as origens e distribuições dos nervos supra-escapular, subescapulares cranial e caudal e toracodorsal em tamanduá-bandeira (Myrmecophaga tridactyla). Foram utilizados três exemplares adultos, sendo uma fêmea e dois machos, com peso aproximado de 40 Kg, fixados em solução de formaldeído a 10%. Nos três espécimes estudados o nervo supraescapular originou-se dos ramos ventrais do sexto (C6) e sétimo (C7) nervos espinhais cervicais e enviou ramos para os músculos supra-espinhal e infraespinhal. Os nervos subescapulares cranial e caudal originaram-se dos ramos ventrais dos sexto (C6) e sétimo (C7) nervos espinhais cervicais e distribuíramse, respectivamente, nos músculos subescapular e redondo maior. O nervo toracodorsal teve origem nos ramos ventrais dos sexto (C6), sétimo (C7) e oitavo (C8) nervos espinhais cervicais e primeiro nervo espinhal torácico (T1), e emitiu ramos para o músculo grande dorsal

Jurriaan H De Groot - One of the best experts on this subject based on the ideXlab platform.

  • Teres Major Muscle activation relates to clinical outcome in tendon transfer surgery
    Clinical Biomechanics, 2010
    Co-Authors: Frans Steenbrink, Rob G H H Nelissen, Carel G M Meskers, Michiel A J Van De Sande, P M Rozing, Jurriaan H De Groot
    Abstract:

    Abstract Background In massive rotator cuff tears a Teres Major (TMj) tendon transfer to the insertion of the supraspinatus (SSp) reverses its ad duction moment arm into ab duction which is supposed to be an adequate salvage procedure. Analysis of Muscle function to find biomechanical ground of such success is scarce. Methods We compared pre- and postoperative clinical outcome of TMj transfer, i.e. Range of Motion, pain, Constant Shoulder scores and arm force. TMj activation was evaluated in 14 patients suffering massive cuff tears using activation ratios to describe the desired ‘in-phase’ and undesired ‘out-of-phase’ contribution to the external arm moment. Additionally, we analyzed activation of the latissimus dorsi (LD) and the medial part of the deltoids (DE). The activation ratios were compared to controls and TMj activation ratios were related to clinical outcome. Findings TMj tendon transfer improved arm function. Pre-operatively, we observed ‘out-of-phase’ ab duction activation of TMj and LD. After transfer patients activated TMj according to its new anatomical position. ‘Out-of-phase’ LD ab duction activation persisted. The clinical improvements coincided with changes in activation ratio of TMj. Interpretation ‘Out-of-phase’ TMj ad ductor activation is associated with compromised arm function in patients with irreparable cuff tears. After transfer, TMj is activated in correspondence with its new anatomical function, which was supportive for the improved arm function.

  • Teres Major Muscle activation relates to clinical outcome in tendon transfer surgery
    2010
    Co-Authors: Steenbrink F., Nelissen R.g.h.h., Meskers C.g.m., M.a.j.v. De ,sande, Rozing P.m., Jurriaan H De Groot
    Abstract:

    Background: In massive rotator cuff tears a Teres Major (TMj) tendon transfer to the insertion of the supraspinatus (SSp) reverses its adduction moment arm into abduction which is supposed to be an adequate salvage procedure. Analysis of Muscle function to find biomechanical ground of such success is scarce. Methods: We compared pre- and postoperative clinical outcome of TMj transfer, i.e. Range of Motion, pain, Constant Shoulder scores and arm force. TMj activation was evaluated in 14 patients suffering massive cuff tears using activation ratios to describe the desired 'in-phase' and undesired 'out-of-phase' contribution to the external arm moment. Additionally, we analyzed activation of the latissimus dorsi (LD) and the medial part of the deltoids (DE). The activation ratios were compared to controls and TMj activation ratios were related to clinical outcome. Findings: TMj tendon transfer improved arm function. Pre-operatively, we observed 'out-of-phase' abduction activation of TMj and LD. After transfer patients activated TMj according to its new anatomical position. 'Out-of-phase' LD abduction activation persisted. The clinical improvements coincided with changes in activation ratio of TMj. Interpretation: 'Out-of-phase' TMj adductor activation is associated with compromised arm function in patients with irreparable cuff tears. After transfer, TMj is activated in correspondence with its new anatomical function, which was supportive for the improved arm function. (C) 2009 Elsevier Ltd. All rights reserved.Optimising joint reconstruction management in arthritis and bone tumour patient

  • Teres Major Muscle activation relates to clinical outcome in tendon transfer surgery
    'Elsevier BV', 2010
    Co-Authors: Steenbrink F., Nelissen R.g.h.h., Meskers C.g.m., M.a.j.v. De ,sande, Rozing P.m., Jurriaan H De Groot
    Abstract:

    BACKGROUND: In massive rotator cuff tears a Teres Major (TMj) tendon transfer to the insertion of the supraspinatus (SSp) reverses its adduction moment arm into abduction which is supposed to be an adequate salvage procedure. Analysis of Muscle function to find biomechanical ground of such success is scarce. METHODS: We compared pre- and postoperative clinical outcome of TMj transfer, i.e. Range of Motion, pain, Constant Shoulder scores and arm force. TMj activation was evaluated in 14 patients suffering massive cuff tears using activation ratios to describe the desired 'in-phase' and undesired 'out-of-phase' contribution to the external arm moment. Additionally, we analyzed activation of the latissimus dorsi (LD) and the medial part of the deltoids (DE). The activation ratios were compared to controls and TMj activation ratios were related to clinical outcome. FINDINGS: TMj tendon transfer improved arm function. Pre-operatively, we observed 'out-of-phase'abduction activation of TMj and LD. After transfer patients activated TMj according to its new anatomical position. 'Out-of-phase' LD abduction activation persisted. The clinical improvements coincided with changes in activation ratio of TMj. INTERPRETATION: 'Out-of-phase' TMj adductor activation is associated with compromised arm function in patients with irreparable cuff tears. After transfer, TMj is activated in correspondence with its new anatomical function, which was supportive for the improved arm function.Pathofysiological analysis of movement disorders in relation to functio

  • Teres Major Muscle activation relates to clinical outcome in tendon transfer surgery
    2010
    Co-Authors: Steenbrink F., Nelissen R.g.h.h., Meskers C.g.m., M.a.j.v. De ,sande, Rozing P.m., Jurriaan H De Groot
    Abstract:

    Background: In massive rotator cuff tears a Teres Major (TMj) tendon transfer to the insertion of the supraspinatus (SSp) reverses its adduction moment arm into abduction which is supposed to be an adequate salvage procedure. Analysis of Muscle function to find biomechanical ground of such success is scarce. Methods: We compared pre- and postoperative clinical outcome of TMj transfer, i.e. Range of Motion, pain, Constant Shoulder scores and arm force. TMj activation was evaluated in 14 patients suffering massive cuff tears using activation ratios to describe the desired 'in-phase' and undesired 'out-of-phase' contribution to the external arm moment. Additionally, we analyzed activation of the latissimus dorsi (LD) and the medial part of the deltoids (DE). The activation ratios were compared to controls and TMj activation ratios were related to clinical outcome. Findings: TMj tendon transfer improved arm function. Pre-operatively, we observed 'out-of-phase' abduction activation of TMj and LD. After transfer patients activated TMj according to its new anatomical position. 'Out-of-phase' LD abduction activation persisted. The clinical improvements coincided with changes in activation ratio of TMj. Interpretation: 'Out-of-phase' TMj adductor activation is associated with compromised arm function in patients with irreparable cuff tears. After transfer, TMj is activated in correspondence with its new anatomical function, which was supportive for the improved arm function. (C) 2009 Elsevier Ltd. All rights reserved

Erich Brenner - One of the best experts on this subject based on the ideXlab platform.

  • Teres Major Muscle insertion footprint
    Journal of Anatomy, 2017
    Co-Authors: Malte Dancker, Simon Lambert, Erich Brenner
    Abstract:

    Teres Major Muscle (TM) and latissimus dorsi Muscle (LD) are frequently used in Muscle transfers around the shoulder girdle. Some authors have suggested harvesting techniques in which the Muscle is detached in continuity with a bone segment. Information on the bony attachment footprint of these Muscles is lacking. The purpose of this study was to investigate the region of attachment of the TM to facilitate safe and complete harvesting with a bone segment where it is indicated, and to determine the relationship of the TM footprint with that of the LD. Twenty-eight upper extremities of 14 human cadavers (six female, eight male) were investigated during the students' dissection course in the winter term 2012. The attachment footprints were photographed and the images were processed with ImageJ Version 1.46r. The TM attachment footprint at the crest of the lesser tubercle had an average dimension of 187 ± 89 mm2 . It was 49.6 ± 7.9 mm long and 7.4 ± 2.5 mm wide. The bony attachment of the LD within the bicipital groove, just below the tendon of the long head of the biceps Muscle, had an area of 94 ± 37 mm2 . It was 36.5 ± 8 mm long and 3.7 ± 1.2 mm wide. Both Muscles were separated by 4.4 ± 1.7 mm and their attachments overlapped in the craniocaudal direction by 24.4 ± 12.4 mm. Earlier studies have investigated the dimensions of the Muscles' tendons close to the attachment not the bony attachment itself. The dimension of the attachment of the TM was larger than that of the LD. The ratio between the footprint areas was approximately 2:1. This information should be considered by surgeons undertaking transfers, which include a bony segment of the Muscle insertion.

  • the neurovascular anatomy of the Teres Major Muscle
    Journal of Shoulder and Elbow Surgery, 2015
    Co-Authors: Malte Dancker, Simon Lambert, Erich Brenner
    Abstract:

    Background Information in recent literature on the Teres Major Muscle (TM) is limited and, at times, contradictory. Exact information on its neurovascular supply is clinically relevant for its use in a free or pedicled Muscle transfer in reconstructive shoulder surgery. Therefore, the aim of this study was to analyze the TM topographically, especially its neurovascular supply and its macroscopic appearance. Materials and methods Thirty upper extremities of 15 human cadavers (7 female and 8 male cadavers) were investigated during the students’ dissection course of our anatomic department in the winter term of 2012. Results The lower subscapular nerve (LSN) innervated the TM in 86.6% of shoulders. In 13.3%, the thoracodorsal nerve (TDN) supplied the Muscle. The LSN’s branch was 49.8 ± 11.8 mm long. The TDN’s branch was 83.5 ± 9.8 mm long. The entry of the neurovascular pedicle was located almost in the center part of the Muscle. The arterial branch was 33.6 ± 7.3 mm long. Discussion In general, the LSN innervates the TM. However, in 10% to 20% of shoulders, the TDN innervates this Muscle. The branch of the TDN supplying the TM is longer than the branch of the LSN. In a Muscle transfer, the vessels are the predictable limiting factor for translation because they are shorter than the nerve. The artery, nerve, and vein enter the Muscle in a close relationship (

Katsumi Takase - One of the best experts on this subject based on the ideXlab platform.

  • isolated tear of the Teres Major Muscle
    Orthopedics, 2019
    Co-Authors: Katsumi Takase
    Abstract:

    Rotator cuff tears are frequently treated in daily clinical practice. However, there have been few reports of tears around the shoulder involving the latissimus dorsi and Teres Major Muscles. The author reports the rare case of an isolated tear of the Teres Major Muscle with symptom onset during ordinary sports activities without a clear traumatic mechanism. The patient received conservative treatment, and satisfactory results were obtained. [Orthopedics. 2019; 42(2):e276-e278.].

  • isolated rupture of the Teres Major Muscle
    Journal of Orthopaedic & Sports Physical Therapy, 2008
    Co-Authors: Katsumi Takase
    Abstract:

    A 21-year-old right-handed male tennis player presented with a complaint of pain in the posterior aspect of the right shoulder that started suddenly, earlier that day, after hitting a tennis ball in the overhead position. The pain was initially mild and he was able to continue playing tennis for a short time. However, he eventually had to stop playing tennis as the pain gradually increased and right shoulder range of motion progressively decreased. Frontal plane magnetic resonance T2-weighted imaging showed increased signal intensity and a complete rupture of the Teres Major Muscle belly. Sagittal plane magnetic resonance imaging showed increased signal intensity and marked enlargement of the Teres Major Muscle. The patient was managed nonoperatively. Magnetic resonance imaging at 6 months following the injury revealed that the Teres Major Muscle had demonstrated appropriate healing, normal signal intensity, and normal Muscle size. J Orthop Sports Phys Ther. 2008;38(7):439. doi:10.2519/jospt.2008.0407