Elbow
- Anatomy
- Conditions
- Procedures
Elbow Anatomy
The elbow is a complex joint formed by the articulation of three bones – the humerus, radius, and ulna. The elbow joint helps in bending or straightening of the arm to 180 degrees and lifting or moving objects.
The bones of the elbow are supported by:
- Ligaments and tendons
- Muscles
- Nerves
- Blood vessels
Bones and Joints of the Elbow
The elbow joint is formed at the junction of three bones:
- The humerus (upper arm bone) forms the upper portion of the joint. The lower end of the humerus divides into two bony protrusions known as the medial and lateral epicondyles, which can be felt on either side of the elbow joint.
- The ulna is the larger bone of the forearm located on the inner surface of the joint. It articulates with the humerus.
- The radius is the smaller bone of the forearm situated on the outer surface of the joint. The head of the radius is circular and hollow, which allows movement with the humerus. The articulation between the ulna and radius helps the forearm to rotate.
The elbow consists of three joints, namely:
- The humeroulnar joint is formed between the humerus and ulna and allows flexion and extension of the arm.
- The humeroradial joint is formed between the radius and humerus and allows movements like flexion, extension, supination, and pronation.
- The radioulnar joint is formed between the ulna and radius bones and allows rotation of the lower arm.
Articular cartilage lines the articulating regions of the humerus, radius, and ulna. It is a thin, tough, flexible and slippery surface that acts as a shock absorber and cushion to reduce friction between the bones. The cartilage is lubricated with synovial fluid, which further enables the smooth movement of the bones.
Muscles of the Elbow Joint
There are several muscles extending across the elbow joint that help in various movements. These include the following:
- Biceps brachii: Upper arm muscle, enabling flexion of the arm
- Triceps brachii: Muscle in the back of the upper arm that extends the arm and fixes the elbow during fine movements
- Brachialis: Upper arm muscle beneath the biceps, which flexes the elbow towards the body
- Brachioradialis: Forearm muscle that flexes, straightens and pulls the arm at the elbow
- Pronator teres: Muscle that extends from the humeral head, across the elbow, and towards the ulna, and helps to turn the palm facing backward
- Extensor carpi radialis brevis: Forearm muscle that helps in movement of the hand
- Extensor digitorum: Forearm muscle that helps in movement of the fingers
Ligaments and Tendons of the Elbow
The elbow joint is supported by ligaments and tendons, which provide stability to the joint.
Ligaments are a group of firm tissues that connect bones to other bones. The most important ligaments of the elbow joint are the:
- Medial or ulnar collateral ligament: Comprised of triangular bands of tissue on the inner side of the elbow joint
- Lateral or radial collateral ligament: A thin band of tissue on the outer side of the elbow joint
- Annular ligament: Group of fibers that surround the radial head, and hold the ulna and radius tightly in place during movement of the arm
Together, the medial and lateral ligaments are the main source of stability and hold the humerus and ulna tightly in place during movement of the arm.
The ligaments around a joint combine to form a joint capsule that contains synovial fluid.
Any injury to these ligaments can lead to instability of the elbow joint.
Tendons are bands of connective tissue fibers that connect muscle to bone. The various tendons that surround the elbow joint include:
- Biceps tendon: attaches the biceps muscle to the radius, allowing the elbow to bend
- Triceps tendon: attaches the triceps muscle to the ulna, allowing the elbow to straighten
Nerves of the Elbow
The main nerves of the elbow joint are the ulnar, radial and median nerves. These nerves transfer signals from the brain to the muscles that aid in elbow movements. They also carry sensory signals such as touch, pain, and temperature back to the brain.
Any injury or damage to these nerves causes pain, weakness or joint instability.
Blood Vessels Supplying the Elbow
Arteries are blood vessels that carry oxygen-pure blood from the heart to the hand. The main artery of the elbow is the brachial artery that travels across the inside of the elbow and divides into two small branches below the elbow to form the ulnar and the radial artery.
Elbow Arthroscopy
The elbow is a complex hinge joint formed by the articulation of three bones - humerus, radius and ulna. The upper arm bone or humerus connects the shoulder to the elbow forming the upper portion of the hinge joint.
Ucl Reconstruction (Tommy John Surgery)
Commonly called Tommy John surgery, this procedure involves reconstructing a damaged ligament on the inside of the elbow called the ulnar or medial collateral ligament with a tendon graft obtained from your own body or a donor.
Golfer's Elbow Surgery
Golfer’s elbow is a condition associated with pain on the inside of the elbow where tendons of your forearm attach to the bony prominence (medial epicondyle). It is also called medial epicondylitis and is caused by injury or irritation to the tendons which can become painful and swollen.
Tennis Elbow Surgery
The elbow is a joint made up of three bones: the upper arm bone, the humerus, and the two forearm bones, the radius and ulna. The lower end of the humerus has bony bumps called epicondyles that serve as sites of attachment for major tendons and muscles that help in arm movement.
Total Elbow Replacement
The arm in the human body is made up of three bones that join to form a hinge joint called the elbow. The upper arm bone or humerus connects from the shoulder to the elbow to form the top of the hinge joint. The lower arm or forearm consists of two bones, the radius, and the ulna.
Revision Elbow Replacement
Revision elbow replacement is a surgery performed to replace a loose or worn out initial elbow replacement. Typically, cemented semi-constrained prostheses are used for revision elbow replacement.
Elbow Ligament Reconstruction
The elbow is a complex joint of the upper limb formed by the articulation of the long bone of the upper arm or humerus and the two bones of the forearm, namely, radius and ulna. It is one of the important joints of the upper limb and is involved in basic movements such as flexion and extension of the upper limb and rotation of the forearm.
Arthroscopic Debridement Of The Elbow
Arthroscopic debridement of the elbow is a minimally invasive surgical procedure in which an arthroscope, a special tube-like instrument fitted with a camera and a light source, is inserted into the elbow through a tiny keyhole skin incision to identify and remove nonviable tissue and foreign debris from inside the elbow joint.
Cubital Tunnel Release (Ulnar Nerve Decompression))
Cubital tunnel syndrome is a condition characterized by compression of the ulnar nerve in an area of the elbow called the cubital tunnel. The ulnar nerve travels down the back of the elbow behind the bony bump called the medial epicondyle, and through a passageway called the cubital tunnel.
Endoscopic Cubital Tunnel Release
Endoscopic cubital tunnel release is a minimally invasive surgical procedure to decompress the ulnar nerve for the treatment of cubital tunnel syndrome. Endoscopic refers to the surgery being performed utilizing an endoscope - a thin, flexible fiber-optic tube with a camera, light, magnifying lens, and a port to pass tiny surgical instruments.
Open Elbow Surgery
Open elbow surgery is an operative procedure performed to treat certain conditions of your elbow through a large, open cut (incision) in the skin using a scalpel.
Radial Head Orif And Replacement
Radial Head Orif And Replacements are swellings that most commonly develop along the tendons or joints of wrists or hands. They can be found either at the top of the wrist, palm side of the wrist, end joint of a finger or at the base of a finger.
Common Extensor Tendon Origin Repair
The common extensor tendon is a tough band of fibrous connective tissue that attaches to the lateral epicondyle of the humerus (long bone in the upper arm) at the elbow. Rupture or tear of the common extensor tendon is the most common acute tendon injury of the elbow.
Elbow Tendon And Ligament Repair
The elbow is a complex joint of the upper limb formed by the articulation of the long bone of the upper arm or humerus and the two bones of the forearm, namely, radius and ulna. It is one of the important joints of the upper limb and is involved in basic movements such as flexion and extension of the upper limb and rotation of the forearm.
Elbow Fracture Reconstruction
Elbow fracture reconstruction is a surgical procedure employed to repair and restore the appearance and full function of a damaged elbow caused by severe trauma or injury. This may include repairing damaged structures or replacing missing or damaged structures with adjoining skin, muscles, ligaments, tendons, bones, or nerves to restore the appearance and function.
Ulnar Nerve Transposition
The ulnar nerve is one of the 3 main nerves in the arm that travels down from the neck through a bony protuberance inside the elbow (medial epicondyle), under the muscles of the forearm and down the hand on the side of the palm, towards the little finger.
Ulnar Nerve Release
Ulnar nerve release, also known as ulnar nerve decompression, is a surgical procedure to treat a medical condition called ulnar nerve entrapment or cubital tunnel syndrome.
Orif Of The Distal Humerus Fractures
A distal humerus fracture is a condition that occurs when there is a break in the lower end of the humerus bone that commonly occurs as a result of severe trauma. Fracture of the distal humerus can affect the movement and function of your arm as well as your work and activities of daily living.
Orif Of The Olecranon Fractures
Olecranon fractures are described as a break in the bony tip of the elbow that sticks out when you bend your arm. A fracture of the olecranon bone can be very painful and make motion of the elbow difficult or impossible. This kind of fracture is common and normally happens in isolation (with no other injuries involved).
Orif Of The Coronoid Fractures
Coronoid fractures are a break in the coronoid process of the ulna due to trauma or injury. A coronoid fracture of the ulna is a complex intraarticular fracture that is difficult to expose due to complex surrounding anatomical structures.
Orif Proximal Humerus Fracture
A proximal humerus fracture is a break in the upper arm bone near the shoulder joint. This type of fracture can severely affect the shoulder joint and immediate medical attention is required in order to preserve shoulder function.
Non-union Surgery (Elbow)
Non-union is the failure of a broken or fractured bone to heal properly even after appropriate treatment.
Ulnar Collateral Ligament (Ucl) Repair With Internal Brace
UCL repair with an internal brace is a surgery that involves the use of collagen-coated tape (internal brace) surgically placed at the site of the damaged UCL ligaments. It provides better resistant and a faster recovery compared to traditional reconstruction surgery that involves the use of graft tissue from your body.
Elbow Pain
The elbow is a hinge joint made up of 3 bones – the humerus, radius, and ulna. The bones are held together by ligaments to provide stability to the joint. Muscles and tendons move the bones around each other and help in performing various movements.
Ulnar Nerve Neuropathy
Ulnar nerve neuropathy is the entrapment or compression of the ulnar nerve causing impairment of its function.
Radial Tunnel Syndrome
Radial tunnel syndrome is a painful condition caused by pressure on the radial nerve of the forearm. The entrapment or compression occurs frequently in the proximal forearm in the radial tunnel; a narrow space formed by muscles, bone, and tendon near the elbow joint.
Throwing Injuries
An athlete uses an overhand throw to achieve greater speed and distance. Repeated throwing in sports such as baseball and basketball can place a lot of stress on the joints of the arm, and lead to weakening and ultimately, injury to the structures in the elbow. These overuse injuries may include:
Hyperextension Injury Of The Elbow
Hyperextension injury of the elbow occurs when the elbow joint is bent beyond its normal range of motion, causing damage to the bones and ligaments of the elbow. It may also cause elbow dislocation. The condition is more common in tennis, football, weight-lifting and contact sports.
Lateral Ulnar Collateral Ligament Injuries (Elbow)
A ligament is a band of elastic, tough fibrous connective tissue around a joint. It attaches bone to bone, supports and holds them together and limits the joint's movement.
Elbow Fractures
The arm in the human body is made up of three bones that join to form a hinge joint called the elbow. The upper arm bone or humerus connects from the shoulder to the elbow to form the top of the hinge joint. The lower arm or forearm consists of two bones, the radius and the ulna. These bones connect the wrist to the elbow forming the bottom portion of the hinge joint.
Mid-shaft Humerus Fracture
A mid-shaft humerus fracture is a common type of humerus fracture that occurs along the mid-section of the humerus or upper arm bone.
Distal Humerus Fractures Of The Elbow
The elbow is a region between the upper arm and forearm. The elbow joint is made up of 3 bones. The distal (lower) end of the humerus bone in the upper arm joins with the radius and ulna bones in the forearm to form the elbow joint. The elbow joint is very important for the movement of your arms and for coordination of daily activities.
Elbow Fractures In Children
The arm in the human body is made up of three bones that join to form a hinge joint called the elbow. The upper arm bone or humerus connects from the shoulder to the elbow to form the top of the hinge joint. The lower arm or forearm consists of two bones, the radius, and the ulna.
Radial Head Fractures Of The Elbow
The arm in the human body is made up of three bones that join to form a hinge joint called the elbow. The upper arm bone or humerus connects from the shoulder to the elbow to form the top of the hinge joint. The lower arm or forearm consists of two bones, the radius, and the ulna. These bones connect the wrist to the elbow forming the bottom portion of the hinge joint.
Post-traumatic Stiffness (Elbow)
Medically, stiffness is difficulty moving a joint due to the loss of the joint’s range of motion caused by an injury (trauma) or a disorder.
Loose Bodies In The Elbow
Your elbow is a joint made up of three bones held together by muscles, ligaments, tendons, and cartilage. It is both a hinge and pivot joint allowing you to bend and rotate your elbow freely. Loose bodies in your elbow are small pieces of bone or cartilage that have broken off and are lying or floating free within the joint. They can make elbow movement such as bending or rotation difficult.
Little League Elbow
Little league elbow, also called medial apophysitis, is an overuse condition that occurs when there is overstress or injury to the inside portion of the elbow. It is commonly seen in children involved in sports activities that require repetitive throwing such as baseball.
Nursemaid's Elbow
The elbow is a complex joint formed by the articulation of three bones – the humerus, radius, and ulna. The elbow joint helps in bending or straightening of the arm to 180 degrees and lifting or moving objects.
Elbow Contracture
Elbow contracture refers to a stiff elbow with a limited range of motion. It is a common complication following elbow surgery, fractures, dislocations, and burns.