Glenohumeral Joint Humerus (red), Scapula (blue), Clavicle (purple) Though, the bones would not be able to move if it
Glenohumeral Joint Humerus (red), Scapula (blue), Clavicle (purple) Though, the bones would not be able to move if it
G: The names of the muscles that jenny refers to as “ lats and delts” are Latissium Dori Muscle and Deltoid Muscle. The Latissium Dori Muscle does extension, adduction, transverse extension, flexion from an extended positon and internal rotation of the shoulder joint. The Deltoid Muscle is the prime mover of the arm abduction along the frontal plan.…
The four muscles of the rotator cuff are the Supraspinatus, which originates above the spine of the scapula and inserts on the greater tuberosity of the humerus. This muscle abducts the shoulder joint and also helps stabilize the head of the humerus in the glenohumeral joint. The second muscle is the Infraspinatus, which originates below…
Scapular dyskinesis is an anatomical dysfunction of the scapula, or more commonly known as the shoulder blade. The scapula is a bone that connects the humerus and the clavicle to the axial skeleton with its muscle attachments and provides stabilization to the arm. The scapula is a triangle bone; relatively flat in shape that forms the shoulder girdle. The scapula has multiple surfaces where muscles originate and attach. These surfaces are the subscapular fossa (costal side), infraspinatus fossa, and supraspinatus fossa (both dorsal side). There is also the scapular spine, glenoid fossa, acromion, and the superior, medial, and lateral borders. The glenoid…
Muscles that assist the prime mover in a movement are called synergists. When the elbow joint is flexed the brachialis and brachioradialis are the synergists as they assist the bicep in the movement.…
15. Movements permitted by the elbow joint between the humerus and the ulna are – flexion and extension…
This is the Scapula Strip Mall where you can explore this flat typed bone. It lies on the thoracic wall, and is what connects the humerus bone of the arm to the clavicle. A small tendon attaches the levator to the upper area of the scapula. This muscle is responsible for pulling up the scapula, which allows for the shrugging movement of the…
The overarm throw is a skill frequently used in a wide range of sports such as cricket,softball and baseball. The action is also used in athletic activities such as javelin, with the overhead serve and smash in tennis, volleyball and badminton and passing a netball and basketball.An overarm throw is the action of the arm swinging backwards then upwards, as the elbow moves close to ear level, leading the throw forward a step is taken with the foot opposite the throwing arm, during the throw, body rotates to face forward and body weight transfers from back to front foot, the elbow then straightens before release, with throwing arm reaching forward and downward in a follow through. There are four mandatory movements involved an overarm throw.These include standing positionPlayer stands with one leg infront of the other,the process of bringing back the ball- player brings back the ball towards their ear slightly rotating the lower part of the body,throwing the ball-player uses maximum strength to throw the ball extending the arm and flexing the back leg and lastly ending in a follow through- back leg ends in a plantar flexion, arm is now inferior to the shoulder.There are many major bones, muscles,joints and joint actions used to perform this skill. Bones range in different shapes and sizes a feature which allows them to perform specialised functions.The main types of bones are long bones which are longer than they are wide and they function as levers, short bones which have a short axis and are found in small spaces and transfer forces and lastly flat bones which consist of a broad surface and serve as places of attachment for muscles also protecting vital organs.Bones provide a steady structure to the body and only move due to muscles pulling them often rapidly through specific positions enabling activities such as the…
Yes, the shoulder joint ( Ball and Socket). It is important for the analysis because you use your shoulder muscles to pull yourself up to the bar to complete one chin up.…
When preparing for a volleyball serve, the right shoulder joint is primarily used. The shoulder joint is a third class lever operating on the humorous bone, which is held in place by the clavicle bone and scapula. These three bones make up the Ball and Socket joint which consists of a globular head (humerus) that articulates with the cup-shaped cavity of another bone (the scapula). This joint allows a wider range of movement therefore permitting movements in all directions…
The origins of water polo can be traced back to the late 19th century when a Scottish man named William Wilson constructed the rules for the game, as a result of the public’s growing disinterest of swimming carnivals (Donev, 2008). The sport was introduced onto the Olympic scene in 1900 during the Paris game, making it one of the longest running team games in the Olympics and can be played by both men and women (Smith, 1998). Australia made its debut in the 1948 Olympic Games. The Australian team has achieved moderate success with the woman’s team winning gold in the 2000 Olympic Games (Tan, 2009).…
In this article, the author, Neumann (2012), poses the question of whether or not the convex-concave rules are flawed or misinterpreted, after receiving questions as to whether these rules should still be taught in college or continuing education physical therapy programs (p.53). In order to accurately affirm if the rules are indeed flawed or misinterpreted, Neumann (2012) chooses to examine the convex-concave rule as applied to studies performed on the arthrokinematics of abduction of the glenohumeral joint (GH). The convex – concave rule states that during typical joint motion, a moving bone turns around a stable bone. The non-moving bone provides stabilizing joint surface for moving bone (Foster 2013, p. 59). In reference to the arthokinematics of abduction of the GH, “the convex humeral head rolls superior relative to the glenoid fossa as a point on its articular surface simultaneously slides inferior” (Neumann 2012, p.53). However, Neumann (2012) points out that the flaw, showing that the humeral head remained nearly stationary or translated upward when performing at certain degrees (p.53). Although he proved the flaw, Neumann (2012) states the misinterpretation could be due to the humeral head actually only migrates about 1mm to 3mm proving there is an inferior slide during GH joint abduction (p.53).…
Bones of the arm will be represented as Aluminum or wooden sticks. These sticks will be joined together by SERVO MOTORS. For elbow joint for example, the servo motor will be attached to the upper arm, and its gear will be attached to the lower arm. So when the elbow motor moves, the lower arm will move while the upper arm standstill.…
Pivot Joint: The cylindrical surface of one bone rotates within a ring formed of bone and fibrous tissue of a ligament. Movement at such a joint is limited to rotation around a central axis. The joint between the proximal ends of the radius and the ulna, where the head of the radius rotates in a ring formed by the radial notch of the ulna and a ligament (annular ligament), is of this type. Similarly, a pivot joint functions in the neck as the heard turns from side to side. In this case, the ring formed by a ligament (transverse ligament) and the anterior arch of the atlas rotates around the dens of the axis.…
The trapezius is very important for many shoulder girdle movements but its action on the scapula is quite complex and not emphasized in this text. Some of…
are a lot of joints. So this robot is the same, with six servo motors to achieve…