Yes. True
It is distal to it....
Normal and palpable
distal embolization
A rheumatoid nodule is a firm feeling swelling or lump which occurs within 2 years in about 5% of people once they are diagnosed with rheumatoid arthritis. And about 25% of RA victims wil get them at some time during their lives. It is very unusual for 'rheumatoid nodules to appear if not accompanied with arthritis. They are usually subcutaneous ( under the skin) especially over bony prominences such as the tip of the elbow or over the knuckles. they can also appear in the lining of the lungs as well as other organs. Sizes of Nodules vary from that of about a pea to that of a small orange. Quite often they are associated with synovial pockets or bursae. Generally rheumatoid nodules are not painful or in any way disabling, Unless they are on a place where there is a lot of contact such as on the back of the arm under the elbow where people tend to rest their arms when doing desk work an similar situations. Other then that they are just not very attractive. In isolated cases they can appear on parts of the body such as the upper eyelid, distal region of soles, vulva and internally in the gallbladder, lung, heart valves, larynx and spine.Rheumatoid nodules consist of a shell of fibrous tissue surrounding a centre of fibrinoid necrosis. Pea sized nodules have one centre. Larger nodules tend to be multilocular, with many separate shells or with connections between the necrotic centres. Individual necrotic centres may contain a cleft or several centres of necrosis may all open on to a large bursal pocket containing synovial fluid. The boundary between the necrotic centre and the outer fibrous shell is made up of the characteristic feature of the nodule, which is known as a cellular palisade. The palisade is a densely packed layer of macrophages and fibroblasts which tend to be arranged radially, like the seeds of a kiwi fruit or fig. Further out into the fibrous shell there is a zone that contains T lymphocytes and plasma cells in association with blood vessels. The overall histological picture is essentially identical to that of rheumatoid synovitis with the main differences being that the palisade replaces the synovial intima (they may blend imperceptibly in bursae) and an almost total absence of B lymphocytes.(Sourced from Wikipedia)
Left Maxillary 1st molar.
Proximal and distal interphalangeal joints.
A distal interphalangeal joint is a type of synovial hinge joint found in the fingers and toes, connecting the distal phalanges together. It allows for flexion and extension movements, helping to control the fine movements of the fingers and toes.
The only muscle capable of flexing the distal interphalangeal joints is the flexor digitorum profundus. This muscle originates from the ulna and interosseous membrane in the forearm and inserts on the distal phalanges of the fingers. It is responsible for flexing the distal interphalangeal joints while the flexor digitorum superficialis flexes the proximal interphalangeal joints.
Knots on the last finger joints are often referred to as Heberden's nodes, which are bony swellings that form at the distal interphalangeal joints. These nodes are typically associated with osteoarthritis and may cause pain, stiffness, and limited range of motion in the fingers. Treatment usually focuses on managing symptoms and slowing the progression of arthritis.
The flexor digitorum profundus
From the nail down the distal phalances, distal interphalangeal joint, the middle phalanges and then the proximal interphalangeal joints. The base of the finger is comprised of the proximal phalanges and the knuckles.
The distal interphalangeal joints are the most distal joints of the lower extremities.
The proximal and distal phalanges only meet in the first digits (the thumbs and the big tues). This joint is the first interphalangeal joint.
Subtalor, Talo-calcaneo-navicular, tarso-metatarsal, Metatarsophalangeal, Interphalangeal joints
Fingers have joints, which are composed of bones, ligaments, and tendons that allow for movement. Joints in the fingers include the metacarpophalangeal joints, proximal interphalangeal joints, and distal interphalangeal joints.
There would be 2 muscles involved in pulling the trigger: 1 - Flexor digitorum superficialis - flexes the proximal interphalangeal joint 2 - Flexor digitorum profundus - flexes the distal interphalangeal joint
Simply put, there are nine (9) interphalangeal joints in the hand. The hand consists of 5 digits numbered 1-5 from thumb to "pinkie". Digit 1 (thumb) has two phalanges one called the proximal phalanx and another called the distal phalanx. So, there is one interphalangeal joint between the proximal and distal phalanges of the thumb. Digits 2-5 each has three phalanges a proximal phalanx, a middle phalanx and a distal phalanx. So, each digit has 2 interphalangeal joints.