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全文: "Pectoralis minor muscle"
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  • Atsushi MORIYA, Toyoharu TAKAFUJI, Yasushi SATO
    Okajimas Folia Anatomica Japonica
    1993年 69 巻 6 号 321-333
    発行日: 1993/03/22
    公開日: 2012/09/24
    ジャーナル フリー
    In the following, we report our findings obtained as a result of injecting an acrylic pigment in the arteries supplying the pectoralis minor muscle in 50 lateral chests of 26 Japanese adults (15 males and 11 females). In the pectoralis minor muscle, the muscular bundle near the terminal is supplied by A. processus coracoideris (Pc, Sato-Takafuji, '85) or A. coracobrachialis (Cb, Sato, '80) of A. axillaris (Ax), while its middle upper and lower peripherals are supplied by A. thoracoacromialis (Ta) and A. partis abdominalis (Pab, Sato, '76), respectively. Further, the upper and lower peripherals at its origin are supplied by A. thoracica suprema (Ts) and A. thoracica lateralis (Tl), respectively. Pc, Cb, Pab and Ts may occasionally be absent. Arteries supp lying this muscle are classified according to their origins and routes of distribution, as follows. Type I-a: Pc or Cb, Ta, Pab, Ts and Tl are present,32%; Type II-a: Ts is absent from Type I-a,14%; Type III-a: Pb and Pc are absent from Type I-a,20%; Type IV-a: Cb, Pc and Ts are absent from Type I-a,10%. Type b is Type a without Pab. The rates of appearance of Type I-b, II-b, III-b and IV-b were all 6%. The ratios of distribution in area a were as follows, in order of decreasing ratio: 37.6% for Pab (37 cases),32.4% for Tl(49 cases),30.2% for Ta (49 cases),10.8% for Ts (32 cases),7% for Cb (9 cases), and 6.37% for Pc. In the pectoralis minor muscle, the major supplying arteries are Pab, Tl and Ta, and where Pab was absent, this was compensated for by a branch of Ta. The total number of supplying arteries in this muscle was two to five, with the majority, or 36%, having four arteries. As for sex differences in the incidence of each type, Type I-a appeared more often in males (40%) than in females (20%). The rates according to the ribs of origin were 46%,36%,16%, and 2% for types 2-3-4-5,3-4-5,2-3-4, and 2-3-4-5-6, respectively. It was interesting that all Type II and Type IV cases without Ts corresponded to Type 3-4-5 without the muscular bundle arising from the second rib, as it suggests the process of degeneration of the pectoralis minor muscle in Homo. Innervating the pectoralis minor muscle, nerves containing fibers from the Truncus medius (mainly C7) were found in a small upper peripheral region, and those containing fibers from the Fasciculus medialis (C8, Th1) were distributed in the majority of the remainder in 50% of the subjects studied, while 36% lacked the branch from the Truncus medius. There was no strong correlation between the nerves and the type of arterial distribution.
  • 北條 暉幸, 中島 民治, 鶴野 壽一
    Journal of UOEH
    1987年 9 巻 3 号 315-319
    発行日: 1987/09/01
    公開日: 2017/04/11
    ジャーナル フリー
    産業医科大学解剖学実習における小胸筋の解剖において, 同筋の起始の解剖学的変異を観察し, 種々の起始形態の統計学的研究を行い, アメリカ白人とアメリカ黒人との同筋の起始の形態の変異の出現率と比較した. 日本人の同筋の最も多い起始の形態は, 左右両側において男性では, 第2から第5肋骨にかけての型であり, 女性では第2から第4肋骨にかけての型であった. 女性のこの型(2-4)は, 他の比較群よりも有意差をもって高かった. アメリカ白人の種々の型に性差はなく, アメリカ黒人では第2から第5肋骨にかけての型が男性が女性よりも有意差をもって高かった. 人種差は, 女性においてのみ認められ, 日本人女性の第3から第5肋骨の型が黒人女性よりも有意差をもって低く, 第2から第4肋骨の型が黒人女性よりも有意差をもって高かった.
  • RYOSUKE MIYAUCHI
    Okajimas Folia Anatomica Japonica
    1982年 58 巻 4-6 号 521-533
    発行日: 1982年
    公開日: 2012/09/24
    ジャーナル フリー
    A very rare variation of the latissimus dorsi muscle was discovered on the left side of the body in a 77-year-old Japanese man in whom this muscle had accessory insertion into the first rib and into the pectoralis minor muscle in addition to its regular insertion into the crest of the lesser tubercle of the humerus.
    A slender fasciculus (aberrant bundle) was found which separated anteriorly from the ventral margin of the latissimus dorsi muscle and immediately became a band-like aponeurosis. This aponeursis ran upwards and medialwards between the external intercostal muscles and the pectoralis minor muscle. After giving off a digitation that attached to the pectoralis minor muscle, it inserted for the most part into the first rib.
    The left side of the body also had a muscular arch of the axilla which attached to the regular tendon of insertion of the latissimus dorsi muscle and to the bandlike aponeurosis.
    Gross and dissecting stereomicroscopic examinations were made of the nerve supply, and the aberrant bundle from the latissimus dorsi muscle was found to receive a small branch from the thoracodorsal nerve, while the muscular arch of the axilla was innervated by the pectoral nerve.
    The literature was reviewed for any change in shape of the latissimus dorsi muscle in the presence of a muscular arch of the axilla, and for the true nature of the aberrant fasciculus from this muscle, in particular concerning the true nature of the band-like aponeurosis with which the aberrant bundle was continuous. As a result, it is suggested that the separation of an aberrant fasciculus from the latissimus dorsi muscle is possible regardless of the presence or absence of the muscular arch of the axilla. Moreover, it is speculated that the band-like aponeurosis was a band formed from the fascia situated on the external intercostal muscles and serratus anterior muscle. Concerning the mechanism of formation of this variation, it is considered that the aberrant bundle from the latissimus dorsi muscle had become adherent to the band formed from the fascia situated on the external intercostal muscles and the serratus anterior muscle, and further that the muscular arch of the axilla had become attached to the regular tendon of insertion of the latissimus dorsi muscle and to the above-mentioned aberrant bundle.
  • 吉村 英哉, 望月 智之, 宗田 大, 菅谷 啓之, 前田 和彦, 秋田 恵一, 松木 圭介, 中川 照彦
    肩関節
    2007年 31 巻 2 号 217-219
    発行日: 2007年
    公開日: 2008/01/30
    ジャーナル 認証あり
    Previous studies reported a presumably unusual bony attachment of the pectoralis minor muscle. However, less attention has been given to the insertion of the continuation to the glenohumeral joint. The purpose of this study was to evaluate the frequency of this abnormal insertion of the pectoralis minor muscle, and also to investigate the relation between this continuation and the capsule. 81 anatomic specimen shoulders from 41 cadavers were dissected. The insertion of the pectoralis minor tendon to the glenohumeral joint was carefully investigated. The pectoralis minor tendon ran beyond the coracoid process and extended to the superior portion of the glenohumeral joint in 28 out of 81 specimens (34.6%). The continuing insertion divided the coracoacrominal ligaments into two limbs. The continuation was more variable, and consisted of the whole tendon in 6, the middle part in 5, the lateral part in 15, and the medial part in 2 specimens. Furthermore, the pectoralis minor tendon inserted to the posterosuperior border of the glenoid in 6, to the greater tuberosity in 7, and both to the glenoid and the greater tuberosity in 15 specimens. The prevalence of the anomalous insertion of the pectoralis minor tendon revealed to be as high as 34.6% in the present study. This may suggest that the pectoralis minor tendon plays an important role in the stability of the glenohumeral joint.
  • Ryosuke MIYAUCHI, Gen TACHIBANA, Kazushige KURIHARA
    Okajimas Folia Anatomica Japonica
    1986年 63 巻 5 号 331-335
    発行日: 1986年
    公開日: 2012/09/24
    ジャーナル フリー
    Summary: An anomalous muscle was found on the left anterior thoracic wall of a Japanese male, It arose from the fourth rib, ran mediocaudally and inserted into the fifth costochondral junction. The muscle was supplied from its superficial surface by the anterior subbranch from the lateral cutaneous branch of the fourth intercostal nerve.
    In terms of its nerve supply, this muscle is discussed from the viewpoint of its true nature and mechanism of formation. The results suggest that the original uppermost slip of the external oblique muscle had formed this muscle through retrogression and disappearance of its mediocaudal portion in the process of ontogenesis.
  • Kazuya YOSHINAGA, Kodo KODAMA, Katsuharu KAMETA, Natsuko KARASAWA, Naosuke KANENAKA, Sayaka KOHNO, Tatsuo SUGANUMA
    Okajimas Folia Anatomica Japonica
    2003年 80 巻 1 号 23-28
    発行日: 2003年
    公開日: 2008/01/18
    ジャーナル フリー
    A rare variation in the arterial pattern was found in the right arm of an 87-year-old male cadaver in a student dissection practice. in this case, the superficial brachial and superficial subscapular arteries coexisted in the absence of the normal brachial artery (A. brachialis profunda). After branching off a 1arge-sized superficial subscapular artery, the axillary artery did not penetrate the brachial plexus and gave rise to a superficial brachial artery, which arose from the axillary artery at the point between the ansa pectoralis and ansa mediana, and descended ventral to the median nerve branching off the profunda brachil and superior and inferior ulnar collateral arteries. The superficial brachial artery finally divided into the radial and ulnar arteries in the cubital fossa. The superficial subscapular artery passed inferior and dorsal to the medial cord of the brachial plexus, giving off the lateral thoracic artery, and then branched off into the thoracodorsal, circumflex scapular and posterior circumflex humeral arteries. Thus the main nerves of the brachial plexus were sandwiched between the superficial brachial artery and the superficial subscapular artery system. The morphological and clinical significance of this variant are discussed.
  • Wontae Gong, Ilsub Jun, Yoorim Choi
    Journal of Physical Therapy Science
    2013年 25 巻 4 号 489-491
    発行日: 2013/04/25
    公開日: 2013/05/31
    ジャーナル フリー
    [Purpose] The purpose of this study was to examine the correlation between the humeral head anterior glide posture (HHAGP) and elbow joint angle (EJA), forward head posture (FHP), and glenohumeral joint (GHJ) range of motion (ROM). [Subjects] The subjects were 47 college students (10 male, 37 female) in whom more than one third of the humeral head was anteriorly translated against the acromion. [Methods] Humeral head distance (HHD) was measured with vernier calipers and EJA and FHP were measured using NIH Image J software for lateral body imaging obtained with a digital camera. GHJ ROM was measured with a goniometer. [Results] Increases in HHD were accompanied by decreases in internal rotation (IR) and abduction (AB), while increases in forward head angle (FHA) accompanied decreases in EJA. Increases in EJA occurred together with increases in external rotation (ER). IR and ER increased with increases in AB. [Conclusion] HHD influences EJA, IR, and AB; therefore, HHD should be considered in therapeutic approaches for these factors.
  • 樋口 隆志, 井上 茂樹, 川上 照彦, 河村 顕治, 横山 茂樹
    理学療法学
    2016年 43 巻 5 号 383-389
    発行日: 2016年
    公開日: 2016/10/20
    [早期公開] 公開日: 2016/07/13
    ジャーナル フリー
    【目的】2 種類の異なる小胸筋ストレッチ方法の効果の違いを明らかにすることである。【方法】対象は高校野球部員34 名とした。測定項目は小胸筋長,安静時の肩甲骨位置,上肢挙上時の肩甲骨回旋角度とした。ストレッチ方法はdoorway stretch(以下,DW-stretch 法)とretraction30° stretch(以下,R30-stretch 法)とした。【結果】二元配置分散分析の結果,小胸筋長の指標であるRib4-CP および肩甲骨位置の指標であるAD-R において交互作用が認められた。また,2 つのストレッチ法でRib4-CP およびAD-R の変化量に有意差が認められた。【結論】小胸筋を伸張させるとされるDW-stretch 法とR30-stretch 法のうち,DWstretch 法は安静時の小胸筋長や肩甲骨の位置をより変化させる可能性が示唆された。
  • Won-gyu Yoo
    Journal of Physical Therapy Science
    2015年 27 巻 8 号 2661-2662
    発行日: 2015年
    公開日: 2015/08/21
    ジャーナル フリー
    [Purpose] This study was performed to evaluate the clinical effect of the dual-wall pushup plus exercise in patients with scapular dyskinesis with a winged or tipped scapula. [Subject] A 32-year-old man with scapular dyskinesis participated in this study. [Methods] The subject performed the dual-wall pushup plus for 2 months, 4 days a week, for an average of 2 hours each day. The scapular dyskinesis test, linear distance of the acromion, acromion angle, and inferior scapular distance were evaluated before and after the exercise program. [Results] After 2 months of dual-wall pushup plus exercises, the scapular dyskinesis test was negative, the linear distance of the acromion decreased, the acromion angle increased, and the inferior scapular distance decreased compared with the initial measurements. [Conclusion] The dual-wall pushup plus exercise is an effective intervention in patients with scapular dyskinesis with a winged or tipped scapula.
  • Seok-hwa Choi, Byoung-Hee Lee, EunJung Chung
    Journal of Physical Therapy Science
    2013年 25 巻 2 号 155-158
    発行日: 2013年
    公開日: 2013/03/22
    ジャーナル フリー
    [Purpose] The purpose of this study was to determine the effects of shoulder stability exercise on shoulder pain and function of middle-aged women. [Subjects] The subjects were 22 middle-aged women, who were randomly divided into two groups: a shoulder stability exercise group of 11 subjects, and a control group of 11 subjects. [Methods] All subjects were evaluated for pain, pressure pain threshold, rounded shoulder posture, and upper extremity stability. A stability exercise for the shoulder joint was designed in order to correct the abnormal location of the scapula, and encourage symmetric rolling, and proprioceptive neuromuscular facilitation symmetrically reciprocal. The measured parameters were evaluated before and after four weeks of exercise. In the exercise group, the exercise training consisted of 40-minute sessions, three sessions a week, for four weeks. [Results] Following intervention, the shoulder stability exercise group showed significant decreases in pain, the pressure pain threshold, and rounded shoulder posture, and upper extremity stability was significantly improved. [Conclusion] The results of this study suggest the feasibility and suitability of this shoulder stability exercise for middle-aged women.
  • Mi-Kyoung Kim, Jung Chul Lee, Kyung-Tae Yoo
    Journal of Physical Therapy Science
    2018年 30 巻 3 号 373-380
    発行日: 2018年
    公開日: 2018/03/02
    ジャーナル フリー

    [Purpose] The purpose of this study was to analyze the effects of pectoralis minor stretching and shoulder strengthening with an elastic band on balance and maximal shoulder muscle strength in young adults with rounded shoulder posture. [Subjects and Methods] Nineteen subjects with rounded shoulder posture were randomly divided into 2 groups: a shoulder stabilization exercise group and a stretching exercise group. The groups performed each exercise for 40 minutes, 3 times a week, for 4 weeks. Static balance (eyes open and closed), dynamic balance (the limits of stability in 4 directions) and shoulder muscle strength in 5 directions were measure before and after the exercises. [Results] The stretching exercise demonstrated a significant difference between the pre- and post-exercise in the static balance with eyes closed and extension and horizontal abduction strength while the stabilization exercise demonstrated significant difference in the left and right directions between the pre- and post-exercise of the dynamic balance and flexion strength. The stabilization exercise demonstrated significant differences shown in the flexion between the pre- and post-test. [Conclusion] The shoulder stabilization and stretching exercises improved the static balance, dynamic balance, and muscle strength.

  • Masahiko Y. KIDA, Hiroyuki KUDOH
    Okajimas Folia Anatomica Japonica
    1991年 67 巻 6 号 449-455
    発行日: 1991/03/20
    公開日: 2012/09/24
    ジャーナル フリー
    In one case accompanied by congenital partial absence of the pectoralis major muscle the sternalis muscle was examined to confirm its innervation by means of analysis of intramuscular nerve distribution. It was proved that the sternalis muscle was supplied only by the pectoral nerves even in the case of sternalis in direct contact with the proper thoracic wall. These findings as well as the results of Ura (1937) and Morita (1944) favor the interpretation presented by Eisler (1901), in which the sternalis muscle was described as being supplied only by the pectoral nerves. However, the problem of double innervation of the sternalis requires continued discussion because the relationships between the pectoral nerves and the branches of the intercostal nerves or extramural nerves (Yamada & Mannen,1985; Kodama et al.,1986) have not yet been resolved. The precise genesis of the sternalis muscle should be also examined though it has already been proved to be derived from the pectoralis muscle group including the subcutaneous trunci muscle.
  • M. Takeshita, H. Minamikawa, E. Matsunaga, N. Takagishi
    肩関節
    1986年 10 巻 2 号 240-245
    発行日: 1986/07/28
    公開日: 2012/11/20
    ジャーナル フリー
  • Eun-Kyung Kim, Jin Seop Kim
    Journal of Physical Therapy Science
    2016年 28 巻 10 号 2929-2932
    発行日: 2016年
    公開日: 2016/10/28
    ジャーナル フリー

    [Purpose] The present study aimed to examine the correlation between rounded shoulder posture, neck disability indices and the degree of forward head posture. [Subjects and Methods] Subjects aged 19–24 years were selected for this study, and the craniovertebral angle was used to measure the degree of forward head posture in the standing and seated positions. Vernier calipers were used to measure rounded shoulder posture in the supine position, and neck pain and functional disability were assessed using neck disability indices. [Results] Angle and neck disability indices in both standing and sitting posture positions exhibited a significant inverse relationship. However, no significant correlation was detected between the craniovertebral angle and rounded shoulder posture for the standing and sitting posture positions. [Conclusion] In conclusion, it was demonstrated in the present study that, depending on the degree of forward head posture, changes were detected in the neck disability indices. However, even an increase in the forward head tilt angle did not lead to rounded shoulder posture. Therefore, maintaining proper posture may prevent postural pain syndrome, functional disability, and postural deformity.

  • 川野 亮二, 日野 春秋, 星野 竜広, 横田 俊也, 池田 晋悟, 羽田 圓城
    日本呼吸器外科学会雑誌
    2009年 23 巻 2 号 126-131
    発行日: 2009/03/15
    公開日: 2009/12/14
    ジャーナル フリー
    患者は75歳,男性.検診にて右上肺野の異常影を指摘され,精査の結果,右前胸壁の第1肋間筋を主座とする最大径7cmの線維増殖性腫瘍と診断された.腫瘍は第1,2肋骨・肋間筋,小胸筋とともに一塊にして切除し,その後胸壁再建術を行った.組織学的には,膠原線維と軽度の異型性をもつ紡錘形細胞の疎な増殖からなるデスモイド腫瘍であり,完全切除例と診断された.また,右肺下葉には1.6m大の原発性高分化型肺腺癌が合併した.デスモイド腫瘍が胸壁に発生することはきわめてまれで,さらに同時性の非小細胞肺癌合併例の報告は現在までに認めない.デスモイド腫瘍は局所再発率が非常に高いため,慎重な経過観察が必要である.
  • 肩関節
    1986年 10supplement 巻 53-90
    発行日: 1986年
    公開日: 2012/11/20
    ジャーナル フリー
  • Yangki Seok, Sukki Cho, Eungbae Lee
    Annals of Thoracic and Cardiovascular Surgery
    2012年 18 巻 1 号 61-63
    発行日: 2012/02/25
    公開日: 2012/02/20
    [早期公開] 公開日: 2011/09/29
    ジャーナル フリー
    Fibrodysplasia ossificans progressiva (FOP) is a rare and disabling genetic disorder characterized by congenital malformation of the great toes and by progressive heterotopic ossification. There is no effective treatment. Conservative management is unsuccessful, and operation result in failure because new ectopic bone forms at the operative site. We report a 10-year-old boy with FOP who underwent surgical management combined with non-steroidal anti-inflammatory drugs (NSAIDs).
  • Masaki Hamamoto, Kiyohiko Morifuji
    Annals of Vascular Diseases
    2013年 6 巻 2 号 230-233
    発行日: 2013/06/25
    公開日: 2013/06/25
    [早期公開] 公開日: 2013/05/23
    ジャーナル フリー
    A 61-year-old woman underwent right axillobifemoral bypass using a reinforced expanded polytetrafluoroethylene T-shaped graft for high aortic occlusion. One year later, anastomotic pseudoaneurysm of the axillary artery was noted. We performed pseudoaneurysmectomy and graft interposition at the same anastomotic site through an infraclavicular approach. Unfortunately, the pseudoaneurysm recurred four months later. Therefore, we performed a second reoperation through a supraclavicular approach, in addition to the infraclavicular one. We were able to achieve better exposure from the axillary artery to the distal part of the subclavian artery, and reconstruct the bypass with secure and safe arterial clamping and reanastomosis.
  • Shi-Min Yuan
    Journal of Nippon Medical School
    2018年 85 巻 5 号 246-249
    発行日: 2018/10/15
    公開日: 2018/11/21
    ジャーナル フリー

    The congenital absence of the pectoralis muscle is usually a manifestation of Poland syndrome. However, a nonsyndromic congenital absence of this muscle is rare, and such absences are usually partial and unilateral. A complete or bilateral absence is even rarer. Two young men presented to our outpatient clinic with incidentally noted unilateral flat chest walls. By chest computed tomography, they were diagnosed with a congenital unilateral absence of the pectoralis muscles. They did not show any functional disability of the arms. As the congenital absence of the pectoralis muscles is often associated with leukemia and genitourinary anomalies, it is advised that hematological testing and renal ultrasonography be performed, even in nonsyndromic cases.

  • 平安 恒男, 古堅 智則, 上原 忠大, 饒平名 知史, 照屋 孝夫, 河崎 英範
    日本呼吸器外科学会雑誌
    2008年 22 巻 7 号 1007-1011
    発行日: 2008/11/15
    公開日: 2009/06/04
    ジャーナル フリー
    症例は47歳,女性.左前胸部のつっぱり感を主訴に来院.画像上,左側大胸筋後面に3×6cmの腫瘤性病変を認めた.術中迅速病理検査にてデスモイド腫瘍の診断を得たため,腫瘍が接している大胸筋と小胸筋,鎖骨骨膜を含めて切除した.術後2年目にCT検査で,切除部位近くに腫瘤性病変出現と増大傾向を指摘されたため,デスモイド腫瘍再発の診断にて再手術を施行した.腫瘍は腋窩部,腕神経叢近くまで浸潤発育していた.神経損傷を避けるため,手術は可及的切除にとどめ,術後に放射線療法を追加施行した.再手術後3年8ヵ月,再発を認めていない.デスモイド腫瘍の手術に際し,完全切除を目指すことは重要であるが,今回の症例の様に術後のQOLを著しく低下させる可能性がある場合は,他の治療法との併用を考慮にいれながら可及的切除にとどめる選択肢も必要と思われた.
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