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"Why is it called Kienbock's DISEASE?"
Disease is considered to be a harmful deviation from the normal structural or functional state of an organism. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state. Thus, the normal condition of an organism must be understood in order to recognize the hallmarks of disease. Nevertheless, a sharp demarcation between disease and health is not always apparent.
-- [Encyclopedia Britannica 1996]
Below is a list of words and abbreviations that you may encounter on your KD journey, either in discussion, or in the doctors or radiologists reports. Each word is followed by its technical definition, and parenthetically, a simpler explanation and\or how it may relate to Kienbock's Disease. So, get out your MRI reports and see if YOU can make the diagnosis! Good luck!
 Arthropathy
- a disease of a joint
Cartilage- 1 : a usually translucent somewhat elastic tissue that composes most of the skeleton of vertebrate embryos and except for a small number of structures (as some joints, respiratory passages, and the external ear) is replaced by bone during ossification in the higher vertebrates
2 : a part or structure composed of cartilage
Chondromalacia- abnormal softness or loss of cartilage
Collateral-
Function: adjective
1 : relating to or being branches of a bodily part (collateral sprouting of nerves)
2 : relating to or being part of the collateral circulation (collateral circulatory vessels) (collateral blood flow)
Function: noun
1 : a branch especially of a blood vessel, nerve, or the axon of a nerve cell
2 : a bodily part (as a ligament) that is lateral in position
(situated or running side by side)
Cyst- a closed sac having a distinct membrane and developing abnormally in a body cavity or structure
Degenerative- of, relating to, involving, or tending to cause degeneration
(gradual deterioration of organs and cells along with loss of function)
Distal-
situated away from the point of attachment or origin or a central point: as located away from the center of the body (the distal end of a bone)
(the distal radius would be the end of the radius bone by the wrist, the farthest away from the body. The distal carpal row would be the row of carpal bones closest to the fingertips)
Dorsal- 1: being or located near, on, or toward the upper surface of an animal (as a quadruped) opposite the lower or ventral surface
2 : being or located near, on, or toward the back or posterior part of the human body (the back of the wrist, the topside)
Dorsal Radiocarpal Ligaments-
The dorsal radiocarpal ligaments attaches from the posterior edge of distal radius to the scaphoid, triquetrum, lunate, and slips to the capitate. These ligaments are named the ulnolunate, ulnotriquetral, ulnocapitate ligaments. These ligaments checks supinatory movement between joint surfaces and maintains joint integrity.
DRUJ-
Distal Radioulnar Joint
The joint formed by the distal ends of the radius and ulna bones. - (Click here to learn more)
Edema-
an abnormal excess accumulation of serous fluid in connective tissue or in a serous cavity called also dropsy.
(Simply put, swelling)
Lesion-
A wound or injury
A localized pathological change in a bodily organ or tissue An infected or diseased patch of skin
Ligament-
1 : a tough band of tissue that serves to connect the articular extremities of bones or to support or retain an organ in place and is usually composed of coarse bundles of dense white fibrous tissue parallel or closely interlaced, pliant, and flexible, but not extensible
2 : any of various folds or bands of pleura, peritoneum, or mesentery connecting parts or organs
Malacia-
abnormal softening of a tissue — often used in combination (osteomalacia)
Morphology- the form and structure of an organism or any of its parts
Negative Ulna Variance-
Negative ulna variance means that your ulna bone is
physically shorter then your radius. This occurs normally in about
25% of the population, but occurs in about 75% of the KD population.
It is thought to be a predisposing factor in the developement of KD.
(Click here to learn more)
Neuropathy-
an abnormal and usually degenerative state of the nervous system or nerves
a systemic condition (as muscular atrophy) that stems from a neuropathy any pathology of the peripheral nerves
(Any pathology, or problem of the peripheral nerves)
Osteoarthritis- arthritis of middle age characterized by degenerative and sometimes hypertrophic (abnormal enlargement) changes in the bone and cartilage of one or more joints and a progressive wearing down of opposing joint surfaces with consequent distortion of joint position usually without bony stiffening
Palmer Ligament-
The palmer ligament is a broad band that attaches from the volar edge of the distal radius to the proximal carpal row and capitate. This ligament checks supinary movement and maintains joint integrity. This ligament can be divided into separate bands including the radiolunate, radiocapiate, radiotriquetral, radioscaphoid ligaments.
Periosteal- situated around or produced external to bone
Persistent wrist synovitis-
This is inflammation of the synovial membrane, which is usually accompanied by pain and swelling of the joint
Pronation- rotation of an anatomical part towards the midline: as a : rotation of the hand and forearm so that the palm faces backwards or downwards
(turning your hand palm-up, palm-down)
Proximal-
situated next to or near the point of attachment or origin or a central point, especially : located toward the center of the body (the proximal end of a bone)
(The opposite of distal. The proximal carpal row would be the row of carpal bones closest to the armbones)
Psuedogout- inflammation of the joints caused by deposits of calcium
pyrophosphate crystals, resulting in arthritis, most commonly of the knees, wrists, shoulders, hips, and ankles, usually affecting only
one or a few joints at a time.
Radiolunate osteoarthritis-
arthritis characterized by degenerative and sometimes
hypertrophic changes in the bone and cartilage of one or more joints
and a progressive wearing down of opposing joint surfaces with
consequent distortion of joint position. In this case, the
radiolunate joint where your
radius articulates with your lunate
Resorption- the action or process of resorbing something
To absorb again.
To dissolve and assimilate (bone tissue, for example)
Sclerosis-
1. The hardening of a tissue or part due to chronic inflammation
2. A thickening or hardening of a body part or system especially from excessive formation of fibrous interstitial or glial tissue
3. Any of various diseases characterized by thickening or hardening, such as arteriosclerosis
(abnormal hardening)
Subarticular
Cystic Changes- cellular changes within the bone in the area where the bones articulate against one another
(cyst formation inside the bone, under the surface where one bone articulates with another)
Subchondral- situated beneath cartilage (subchondral bone)
Supination- rotation of the forearm and hand so that the palm faces forward or upward and the radius lies parallel to the ulna
Turning the hand or forearm so that the back is downward or backward (Rotation of the hands and forearms so that the palms face upward)
Synovial- of, relating to, or secreting synovial fluid (synovial effusion); also : lined with synovial membrane (synovial bursa)(synovial tendon sheaths)
Synovitis- inflammation of a synovial membrane usually with pain and swelling of the joint
( Click here to learn more about the synovial membrane)
TFCC- The triangular fibrocartilage complex (TFCC) is composed of several soft tissue structures on the ulnar side of the wrist - the triangular fibrocartilage (TFC), volar and dorsal radioulnar ligaments, the meniscus homologue, the ulnar collateral ligament and the sheath of the extensor carpi ulnaris tendon. This complex functions to cushion forces along the ulnar aspect of the wrist and stabilize the distal radioulnar joint (DRUJ)
(Click here to learn more about the TFCC)
Ulnar Collateral Ligament-
The ulnar collateral ligament attaches from the ulnar styloid process to the triquetrum, pisiform, and articular disc. The ligament limits radial deviation.
Volar- relating to the palm of the hand or the sole of the foot; specifically : located on the same side as the palm of the hand
(The palm side of the hand or forearm)
Abbreviations and Terms(Some commonly used treatments and abbreviations as regards KD)
- Arthrodesis - total fusion of the wrist - Click here to learn more
- Arthroplasty - surgical reconstruction or replacement - Click here to learn more
- CD -
Core Decompression - Click here to learn more
- CS -
Capitate Shortening - Click here to learn more
- Capitohamate Fusion - fusion of the Capitate and Hamate bones - Click here to learn more
- Capitolunate Fusion - fusion of the Capitate and Lunate bones - Click here to learn more
- CTD - Cumulative Trauma Disorder - Click here to learn more
- Denervation - select nerves are severed to relieve the pain - Click here to learn more
- ICBG - Iliac Crest Bone Graft - Click here to learn more
- KD - Kienbock's Disease - Click here to learn more
- Lunate Replacement - replacement of lunate with artificial lunate
- MCD - Metaphyseal Core Decompression - Click here to learn more
- ORIF - Open Reduction Internal Fixation - Click here to learn more (pdf file)
- PRC - Proximal Row Carpectomy (removal of the proximal carpal row) - Click here to learn more
- Radiolunate Fusion - fusion of Radius and Lunate bones
- ROM - Range Of Motion - Click here to learn more
- RS - Radial Shortening - Click here to learn more
- RSI - Repetitive Strain Injury - Click here to learn more
- RWO - Radial Wedge Osteotomy - Click here to learn more
- SC Fusion - fusion of the Scaphoid and Capitate - Click here to learn more
- STT or Triscaphe Fusion - fusion of the Scaphoid, Trapezium, and Trapezoid bones - Click here to learn more
- TFCC - Triangular FibroCartilage Complex - Click here to learn more
- TWA - Total Wrist Arthroplasty - Click here to learn more
- UIS - Ulna Impaction Syndrome - Click here to learn more
- UL - Ulna Lengthening - Click here to learn more
- US - Ulna Shortening - Click here to learn more (pdf file)
- VBG - Vascularized Bone Graft - Click here to learn more
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