Flashcards in Osteoarthritis aka DJD Deck (69)
What category of joints are commonly affected by DJD?
Weight-bearing joints (knee, hip, etc.)
What are the risk factors for OA?
1 increased age
2 females (hands and knees)
5 inactivity or excessive activity
What is the eponym used for erosive OA of the hands?
What histological substance is altered in DJD causes the nonuniform loss of joint space?
Ground substance (chondroitin sulfate)
What is an enthesophyte?
Ossification in the location where a tendon and/or ligament attaches to bone
What is a geode?
What is another name for intraarticular loose bodies that form from cartilage degradation with DJD?
How does a subchondral cyst form with DJD?
Synovial fluid intrusion through exposed articular plate
What group is more likely to have degeneration of the joints of the hand?
Middle-aged postmenopausal females
Enlarged soft tissue nodes are common in which joints of the hands with DJD?
DIPs primarily and also PIPs
What are the soft tissue nodes seen at the PIPs called?
What are the soft tissue nodes seen at the DIPs called?
Besides the DIPs and PIPs, what other joint of the hand can be targeted by DJD?
What type of arthritis presents as bilateral DJD with central joint erosions?
Erosive DJD (variant of the normal pattern)
What is the radiographic finding associated with erosive DJD at the DIP joint?
"Gull wing" sign
Is inflammation associated with DJD?
NO (compare to RA)
What are the soft tissue nodes seen at the MCPs called?
Which form of DJD unusally presents with inflammation?
What is the differential diagnosis for erosive DJD?
Psoriatic arthritis, RA
DJD is likely to target which joint in the foot?
What is the condition where the first MTP presents with symptoms of pain and stiffness?
What forms of joint misalignment/deformities are seen with DJD of the feet?
Metatarsus varus, hallux valgas
What is the lay term for hallux valgas?
Which means that the distal aspect goes medial: varus or valgus? Lateral?
Medial = varus
Lateral = valgus
How can you tell if hallux valgus is caused by DJD or something like gout/infection?
Soft tissue swelling and redness will be present with gout or an infection
Where is DJD likely to occur in the shoulder?
AC joint (NOT glenohumeral)
If osteophytes and/or joint misalignment are seen in the glenohumeral joint, what is the expected cause instead of something like DJD?
Previous trauma or underlying CPPD
Why are osteophytes from DJD in the AC joint potentially a big issue?
May impinge on rotator cuff tendons leading to tendon calcification and superior migration of humerus
What muscle is responsible for the superior pull of the humeral head as a result of rotator cuff impingement?