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Where the rounded top of the arm bone (humerus) contacts the shoulder blade is called the glenohumeral joint. A second joint on the top of the shoulder is where a different part of the shoulder blade, the acromion, connects to the collarbone. This is called the acromioclavicular joint. Rotator Cuff
What is the bone on top of shoulder called?
The shoulder socket (glenoid) is located on the side edge of the shoulder blade. Together with the head of the upper arm bone (humerus), it makes up the main shoulder joint. Another part of the shoulder blade is known as the coracoid process.
What does bone make up the shoulder joint?
The shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons. The large bone in the upper arm is called the humerus. The shoulder blade is called the scapula and the collarbone is called the clavicle. The top of the humerus is shaped like a ball.
How many bones are in the shoulder?
an extension of the scapula that forms the high point of the shoulder scapula shoulder blade | type: irregular bone | articulates with: clavicle, humerus, ribs Recommended textbook explanations Anatomy & Physiology Student Workbook 2nd EditionKent Pryor, Richard Allan, Tracey Greenwood
Which bone forms the high point of the shoulder?
Where is the shoulder bone?
The shoulder is made up of 3 bones: The scapula (shoulder blade). The scapula is a large, flat, and somewhat triangular bone that sits between the humerus (upper arm bone) and collarbone. It is responsible for stabilizing the upper arm bone, which sits in a shallow socket on the outer edge of the shoulder blade.
What type of bone is the shoulder bone?
The shoulder is a ball and socket joint made up of three bones, namely the humerus, scapula, and clavicle. The end of the humerus or upper arm bone forms the ball of the shoulder joint. An irregular shallow cavity in the scapula called the glenoid cavity forms the socket for the head of the humerus to fit in.
What is the use of shoulder bone?
We use it to raise and lower our collarbone when we shrug our shoulders, move our shoulder blades closer together, or cross our arms. The acromioclavicular (AC) joint connects the bone at the top of the shoulder (acromion) to the collarbone (clavicle). We use this joint to lift our arms above shoulder height.
What are the 4 bones of the shoulder?
Anatomy 101: Shoulder BonesScapula: Another name for this bone is the shoulder blade. ... Clavicle: This bone is also referred to as the collar bone. ... Acromion: This bone is a flat projection of the scapula that gives the shoulder its square shape.Coracoid Process: This bone is also a projection of the scapula.More items...•
What is your shoulder called?
Your shoulder is a ball-and-socket joint that allows you to perform a wide range of movements. You use these muscles for actions from throwing a ball to reaching an item on a shelf. Also called the glenohumeral joint, it has more range of motion than any other joint in your body.
What is shoulder muscle called?
The deltoid muscle overlies the shoulder superficially and functions to abduct the humerus. The deltoid muscle has three origins; the body of the clavicle, the spine of the scapula, and the acromion. The deltoid muscle has its insertion on the deltoid tuberosity of the humerus.
What causes shoulder pain?
The most common cause of shoulder pain occurs when rotator cuff tendons become trapped under the bony area in the shoulder. The tendons become inflamed or damaged. This condition is called rotator cuff tendinitis or bursitis.
What is shoulder bone for Class 6?
Human shoulder is made up of three types of bones: the clavicle (also known as collarbone), scapula (shoulder blade) and humerus (upper arm bone) as well as also co-ordinated with some muscles, ligaments and tendons. The articulations between the clavicle, scapula and humerus bone from the shoulder joint.
What are 3 common shoulder injuries?
Common problems include:Sprains and strains.Dislocations.Separations.Tendinitis.Bursitis.Torn rotator cuffs.Frozen shoulder.Fractures (broken bones)More items...•
What are the 5 joints of the shoulder?
The shoulder girdle is composed of the clavicle and the scapula, which articulates with the proximal humerus of the upper limb. Four joints are present in the shoulder: the sternoclavicular (SC), acromioclavicular (AC), and scapulothoracic joints, and glenohumeral joint.
What is the back shoulder bone called?
The scapula is a large, flat triangular bone with three processes called the acromion, spine and coracoid process . It forms the back portion of the shoulder girdle. The spine (which is located at the back of the scapula) and the acromion can be readily palpated on a patient.
What is the collar bone called?
clavicleThe clavicle is located between the ribcage (sternum) and the shoulder blade (scapula). It is the bone that connects the arm to the body. The clavicle lies above several important nerves and blood vessels.
What type of joint is the shoulder and hip?
Ball-and-socket jointsBall-and-socket joints, such as the shoulder and hip joints, allow backward, forward, sideways, and rotating movements.
Is the scapula a flat bone?
Your scapula is a flat bone that's commonly referred to as your shoulder blade.
What type of joint is the shoulder girdle?
ball and socket typeThe glenohumeral (shoulder) joint is a ball and socket type of synovial joint formed between the glenoid fossa of the scapula and the head of the humerus. The glenohumeral joint is supported by its loose fibrous joint capsule and several ligaments that include: The transverse humeral ligament.
What type of bone is the vertebrae?
Irregular BonesIrregular Bones They are primarily spongy bone that is covered with a thin layer of compact bone. The vertebrae and some of the bones in the skull are irregular bones.
What is the shoulder?
The shoulder is a complex combination of bones and joints where many muscles act to provide the widest range of motion of any part of the body.
What is the collection of muscles and tendons in the shoulder called?
The collection of muscles and tendons in the shoulder is known as the rotator cuff. It stabilizes the shoulder and holds the head of the humerus in the glenoid, a shallow cavity in the scapula. The muscles of the rotator cuff include the suprasinatus, infraspinatus, teres minor, and subscapularis.
What is the name of the joint that connects the clavicle to the sternum?
Sternoclavicular joint: This joint is at the center of the chest where the clavicle meets the sternum. It allows the clavicles to move. Each joint is surrounded by: tendons, to attach the muscles to the bones. The collection of muscles and tendons in the shoulder is known as the rotator cuff.
Where is the scapula located?
Scapula: More commonly known as the shoulder blade, the scapula is a flat triangular bone located in the upper back. It connects with the collarbone at the front of the body. Humerus: The largest bone of the arm, the humerus connects to the scapula and clavicle in the shoulder. The head of the bone has a ball-like knob to create a ball-and-socket ...
Which joint forms the highest point of the shoulder and provides the ability to raise the arm above the head?
It is surrounded by soft tissue and strengthened by fibrous ligaments. Acromioclavicular (AC) joint: This joint forms the highest point of the shoulder and provides the ability to raise the arm above the head. The meeting of the scapula and clavicle forms it.
Which bones are 90 degrees?
At the shoulder, three major bones meet and create a 90-degree angle: Clavicle: Also known as the collarbone, the clavicle extends across the front of the shoulder from the sternum to the scapula. It helps stabilize the shoulder’s movements. Scapula: More commonly known as the shoulder blade, the scapula is a flat triangular bone located in ...
What is the joint between the shoulder blade and the arm bone called?
Where the rounded top of the arm bone (humerus) contacts the shoulder blade is called the glenohumeral joint . A second joint on the top of the shoulder is where a different part of the shoulder blade, the acromion, connects to the collarbone. This is called the acromioclavicular joint.
What is the capsule of the shoulder?
Shoulder Capsule. The shoulder capsule surrounds the ball-and-socket part of the shoulder joint. The capsule separates the joint from the rest of the body and contains the joint fluid. Several ligaments make up parts of the joint capsule, and these ligaments are important in keeping the shoulder joint in proper position.
What is the purpose of labrum in shoulder?
The socket of the shoulder joint is shallow, and the labrum gives the socket more depth, and thus more stability. The labrum also serves as the attachment of a major tendon in the shoulder, the biceps tendon. Labral tears in the shoulder can cause pain, instability of the joint, or both. Labral tears are usually classified based on their location.
What is the scapula called?
Shoulder blade ( scapula) Collarbone (clavicle) The scapula has one part that forms a socket for the ball-and-socket shoulder joint; this is called the glenoid. The glenoid is covered with smooth cartilage. Where the rounded top of the arm bone (humerus) contacts the shoulder blade is called the glenohumeral joint.
Why is the rotator cuff important?
The rotator cuff muscles are important in movements of the ball-and-socket shoulder joint. The rotator cuff is important in many routine activities, and when injured can cause severe pain. When the rotator cuff is inflamed or irritated, this is referred to as rotator cuff tendonitis or shoulder bursitis.
What is the joint between the chest and the upper extremity?
The shoulder joint is the junction between the chest and the upper extremity. Two joints are at the shoulder. The glenohumeral joint is the ball-and-socket junction of the top of the arm bone, and the socket of the shoulder blade. A second joint in the shoulder is the junction of the collar bone with the shoulder blade, ...
What is it called when your shoulder capsule is too tight?
When the shoulder capsule is too tight, the condition is called a frozen shoulder (adhesvie capsulitis). 1 . Adhesive Capsulitis or Stiffness and Pain of the Shoulder Joint.
What is the condition of the shoulder?
Arthritis in the shoulder joint. Bone spurs in the shoulder area. Bursitis, which is inflammation of a fluid-filled sac (bursa) that normally protects the joint and helps it move smoothly. Broken shoulder bone. Dislocation of the shoulder.
What is shoulder pain?
Definition. Shoulder pain is any pain in or around the shoulder joint.
Why does my shoulder hurt?
The most common cause of shoulder pain occurs when rotator cuff tendons become trapped under the bony area in the shoulder. The tendons become inflamed or damaged. This condition is called rotator cuff tendinitis or bursitis. Shoulder pain may also be caused by: Arthritis in the shoulder joint. Bone spurs in the shoulder area.
What is frozen shoulder?
Shoulder separation. Frozen shoulder, which occurs when the muscles, tendons, and ligaments inside the shoulder become stiff, making movement difficult and painful. Overuse or injury of nearby tendons, such as the bicep muscles of the arms. Tears of the rotator cuff tendons.
What tests are needed to diagnose shoulder pain?
Blood or imaging tests, such as x-rays or MRI, may be ordered to help diagnose the problem. Your provider may recommend treatment for shoulder pain, including: If you have a rotator cuff problem, your provider will likely suggest self-care measures and exercises.
How to get shoulder pain to go away?
Here are some tips for helping shoulder pain get better: Put ice on the shoulder area for 15 minutes, then leave it off for 15 minutes. Do this 3 to 4 times a day for 2 to 3 days. Wrap the ice in cloth. Do not put ice directly on the skin because this can result in frostbite. Rest your shoulder for the next few days.
What does it mean when your left shoulder hurts?
Sudden left shoulder pain can sometimes be a sign of a heart attack. Call 911 if you have sudden pressure or crushing pain in your shoulder, especially if the pain runs from your chest to the left jaw, arm or neck, or occurs with shortness of breath, dizziness, or sweating. Go to the hospital emergency room if you have just had a severe injury ...
What is the long bone in the upper arm?
Your humerus is the long bone in your upper arm. The connections it makes at the shoulder and elbow enable you to make many different arm movements. The humerus is also a connection point for arm and shoulder muscles. Humerus fractures are a common injury that are often caused by falls, car accidents, or contact sports.
Why is bending your elbow important?
bending your elbow ( flexion) In addition to being crucial for various arm movements, your humerus is also important for support. For example, parts of the humerus serve as a connection point for muscles in your shoulder and arm.
What is the humerus bone?
What to Know About Your Arm's Humerus Bone. The humerus is the bone in your upper arm. It’s located between your elbow and your shoulder, and consists of several parts that allow it to move freely in different directions. Your humerus has important functions related to both movement and support.
What nerve runs through your arm?
Radial nerve injury: The radial nerve runs through your arm. Radial nerve injury can be a complication of a humerus fracture, particularly middle or distal fractures.
What causes pain in the elbow and humerus?
Osteochondroses: This is a group of disorders in which bone growth is affected. One type , called Panner’s disease, can impact the distal area of the humerus, leading to pain in the elbow.
What is the treatment for a humerus fracture?
These fractures are typically treated with medications, immobilization, and physical therapy. Surgery may be needed in more severe cases.
What is the proximal part of the humerus?
There are some important terms to know with regard to the anatomy of your humerus: Proximal: This is the upper part of your humerus closest to your shoulder. Body or shaft: This is long, middle portion of your humerus. Distal: This is the lower area of your humerus that’s closest to your elbow.
What to do if you have a bone in your shoulder?
See a doctor if you suspect you have a bone or joint issue in your shoulders in order to diagnose your condition and get appropriate treatment.
What is bone spurs?
Bone spurs (also called osteophytes) consist of excess bone growth around your joints, and are common in older adults.
Why do bone spurs grow?
Bone spurs consist of extra bone that can sometimes grow in response to injuries, wear-and-tear, and degenerative conditions like O A.
What is bone spur surgery?
This surgery involves the removal of diseased joints and replacing then with healthy ones . During surgery, bone spurs are also removed.
What diseases can cause bone spurs?
Certain rheumatic diseases can also impact your bones and joints, increasing the risk of developing bone spurs. These include rheumatoid arthritis (RA) and ankylosing spondylitis (AS).
Can bone spurs develop with OA?
Bone spurs often develop along with other degenerative conditions like OA. To diagnose bone spurs in the shoulders and their underlying cause, a doctor will likely:
Can bone spurs go undetected?
In some cases, excess bone growths continue undetected until you’re diagnosed with an underlying condition. In other cases, progressive worsening of bone spur symptoms may prompt a doctor’s visit and diagnosis.
What is shoulder replacement?
Shoulder replacement removes damaged areas of bone and replaces them with parts made of metal and plastic (implants). This surgery is called shoulder arthroplasty (ARTH-row-plas-tee).
What is the top of the arm bone?
The top of the arm bone fits into a socket on the shoulder blade. In a typical shoulder replacement, a plastic lining is attached to the socket to allow smooth movement. The surgeon removes the top of the arm bone and inserts a metal stem with a ball on the end. However, if the rotator cuff is severely damaged, the joint may not be stable or work properly.
What is the replacement of the ball and socket in shoulder replacement?
In an anatomic total shoulder replacement, the ball and the socket are replaced with implants that resemble the natural shape of the bones.
What is the rotator cuff?
Rotator cuff injuries. The rotator cuff is a group of muscles and tendons that surround the shoulder joint. Rotator cuff injuries sometimes can result in damage to cartilage and bone in the shoulder joint.
How does a surgeon put a bone in the arm?
As seen before, the surgeon exposes the joint, prepares the top of the arm bone and inserts a metal stem with a ball on the end. If the socket is worn out, the surgeon smooths and reshapes it. The arm bone is then put back in place.
What causes humerus to collapse?
Osteonecrosis. Some types of shoulder conditions can affect blood flow to the humerus. When a bone is starved of blood, it can collapse.
Why do you need shoulder replacement surgery?
Shoulder replacement surgery is done to relieve pain and other symptoms that result from damage to the shoulder joint.
What is shoulder arthroscopy?
Shoulder arthroscopy is a minimally invasive surgery used to diagnose and treat shoulder problems. You might have arthroscopy for rotator cuff tears or shoulder impingement. Minimally invasive procedures require smaller incisions than traditional surgery. Each incision is about the size of a keyhole.
How does a surgeon repair a shoulder?
Your surgeon inserts a small camera called an arthroscope through a tiny incision in your skin. This camera projects pictures of your shoulder joint to a video screen. Your provider looks at these images to find the source of your injury. If you need a shoulder repair, the provider uses miniature surgical instruments to restore your shoulder’s mobility.
What is the most common type of shoulder arthroscopy?
Rotator cuff surgery is one of the most common types of shoulder arthroscopy.
How long does shoulder arthroscopy take?
Shoulder arthroscopy is an outpatient procedure, meaning you can go home the same day. The entire process usually takes less than an hour.
What is the best way to strengthen your shoulder after shoulder surgery?
A rehabilitation plan includes gentle exercise and physical therapy. It can increase your shoulder movement and strength. Your healthcare provider will give you a rehab plan that suits your specific shoulder surgery.
How long does it take for a shoulder to heal after arthroscopy?
Your shoulder joint will take weeks to months to completely heal after shoulder arthroscopy. You may notice pain and swelling for at least several weeks.
What is labrum tear?
Labrum tears, injuries to the tissue around your shoulder socket.