Shoulder, Thorax & Thoracic Spine

Shoulder, Thorax & Thoracic Spine

The shoulder has three bones, 3 joints, and one articulation. The thoracic cavity, or thorax, consists of twelve vertebrae connected to twelve pairs of ribs that connect to the breastbone within the front of the body. The thorax forms AN elastic however firm cavity that protects important organs. It additionally generates a point fixed (fixed point) for the purposeful quality of the higher and lower extremities to transfer forces between them. Designed functionally to boost respiration chemical element and cathartic greenhouse gas. Our structural design provides the vehicle for you to guide your life and therefore the direction it follows.


The ball-and-socket joint or glenohumeral joint (GH) could be a ball-and-socket joint between the glenoid fossa of the bone and head of the arm bone. it's the foremost mobile joint within the body and most often separated. The glenoid fossa is shallow however concentrated by a cartilage rim referred to as the glenoid labrum and anomalies or variations in size and thickness occur. reminiscent of golf equipment on a tee horizontally, the ball-and-socket joint features a fibrous capsule that envelops the whole articulation, however with a neglectfulness that affords each Active and Passive vary of Motion (ROM). Ligaments reinforce the static and dynamic stability of the joint in varied directions and positions. There area unit several bursae (fibrous sacs of secretion fluid) around the joint in specific locations to shield the tendons that ease up bones quickly with extreme forces. The subacromial bursae are subject to irritation inflicting inflammation and brought up as Impingement Syndrome, which could be a specific and localized sensation on the highest of your shoulder once you elevate your arm up. The girdle consists of 2 scapulae and 2 clavicles. The medial portion of the os attaches to the highest of the breastbone at the sternoclavicular (SC) joint. The distal os connects to the bone at the acromioclavicular (AC) joint. The appendage, a unambiguously evolved bone feature of the bone has 3 varieties or shapes shaped congenitally (Type I or flat 17 November, kind II or sinuate forty-third, kind III or hooked 40%) that may have an effect on the percentages of getting structure injury (Type III ~65%) and detected via a x-ray study. The bone or bone additionally moves or, glides, over the ribs or thorax cage via the scapulothoracic interface once lifting the arm upward and out.

Scapulohumeral Rhythm: a 2:1 quantitative relation throughout shoulder abduction between the arm bone and therefore the bone. because the arm lifts the angulation of the bone moves at 0.5 the speed. generally, this could cause a clunk-clunk-clunk sound because the bone moves over the ribs and will indicate a muscular imbalance. If pain or discomfort occupies your shoulder, do not wait to urge it evaluated. fast and effective treatment exists inside an intensive soft tissue examination and clinical expertise.

Thoracic Spine

The twelve pectoral vertebrae produce a gibbous curve, a primary curve in our spine, shaped inside the female internal reproductive organ. The curve is opposite within the neck and low back. pectoral vertebrae area unit connected or hinged via costovertebral joints to twelve pairs of ribs (7 true and five false). A dozen vertebrae interconnected via multiple aspect joints permitting motion. the highest half dozen vertebrae or the higher pectoral spine rotate and lateral flex thanks to lei aspects. The lower pectoral spine has less rotation and lateral flexion however additional flexion and extension area unit thanks to mesial aspects. however, detain mind we tend to area unit all distinctive and variations inside the spine called inborn anomalies. a sheet of the chest is that the breastbone, the bone at the highest and therefore the os at the lowest. There area unit ten ribs that attach to the breastbone via os cartilages and therefore the bottom a pair of ribs float within the muscles of the wall.

Muscles of the Shoulder & Thorax

Muscles of Scapular Stabilization: skeletal muscle, Rhomboid Major/Minor, Levator Scapulae, anterior serratus muscle, pectoralis

Movements of the Scapula: Depression, Elevation, Protraction, Retraction, higher Rotation

Muscles of the Rotator Cuff: Supraspinatus, Infraspinatus, teres minor muscle, Subscapularis

Movements of the Glenohumeral Joint: Internal & External Rotation, Abduction, Flexion & Extension

Shoulder vary of Motion

Flexion: 150-170 ~ Extension: 35-45

Horizontal adduction: 130-160 ~ Abduction: 40-50

Abduction: 160-180 ~ Adduction: 20-40

External/Internal Rotation w/arm on body: 60/70

External/Internal rotation at ninety degrees of abduction: 90/70

Postural Awareness: Spine, Chest & Pelvis

If respiration is abnormal, several movement patterns are also altered and dysfunctional. Posture and respiration work along with the jointly purposeful unit. The pectoral spine has to be versatile and rigid at bound times. this can be accomplished by co-contraction of the girdle floor, diaphragm, and wall (core), so maintaining correct stability so as to transfer forces whereas still having the ability to breathe. A necessity to purposeful human capability and quality of life.

Strategies to extend pectoral Spine quality

Foam roll higher pectoral spine for improved extension
Foam Roll (Upper Back Cat) for lower pectoral spine extension (can additionally use the chair, gymnasium ball or wall)
Yoga - Downward-Facing Dog helps with scapular stabilization, pectoral extension, core engagement, and pelvic/chest alignment
Mid-Back Rotation: begin on knees and elbows, place a paw on the rear of the head, place left arm straight get into front, palm down for balance. As you take a breath, elevate and rotate the head. Eyes follow elbow as you elevate and rotate through your higher pectoral spine. No body part spine motion.

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