Radiology 2A Week 3: Key Terms & Definitions for Medicine

What structure is viewed on an oblique lumbar x-ray?

Pars interarticularis

T or F: You need to take an oblique to see lumbar facet degeneration?

False

Which joints may be affected by OA in the pelvis?

Sacroiliac

Femoroacetabular

Pubic symphysis

What is the normal space of the SI joint?

2-5 mm

What part of the femur typically develops osteophytes?

Neck

What is the normal measurement of the superior aspect of the hip joint?

4 mm

What is the normal measurement of the axial aspect of the hip joint?

4 mm

What is the normal measurement of the medial aspect of the hip joint?

8 mm

What is the normal ratio of hip joint measurement?

1:1:2

Superior:Axial:Medial

Which gender is hip OA more common in?

Males

T or F: Hip OA is often bilateral

False (unilateral)

What is the most common cause of hip OA?

Underlying congenital or developmental abnormality (80%)

What can pain from hip OA radiate to?

Groin

inguinal area

buttock

ant/med thigh

distal thigh/knee

T or F: Femoroacetabular impingement may precede or follow hip OA

True

What developmental anomaly can result in femoracetabular impingement?

Os acetabuli

What type of femoroacetabular impingement occurs at the acetabulum?

Pincer

What type of femoroacetabular impingement occurs at the femoral neck?

Cam

What type of femoroacetabular impingement occurs at the both the acetabulum and the femur?

Combined

What is the term for deformity of the proximal femur via degenerative changes?

Pistol grip deformity

What are the general features of extremity OA?

Non-uniform joint narrowing

Osteophyte formation

Subchondral sclerosis

Subchondral cysts (geodes)

Which joints of the knee can undergo OA?

Tibiofemoral

Patellofemoral

Proximal tibiofibular

Which compartment of the knee more commonly experiences OA?

medial

What are the symptoms of knee OA?

Pain, swelling, stiffness, creptius

What is the term for softening and degeneration of patellar cartilage?

Chondromalacia patella

What demographic is most affected by chondromalaica patella?

Young Females

What is the term for pain of chondramalacia patella being exacerbated by prolonged sitting in a confined space?

Movie sign

Which joints of the ankle/foot can be affected by OA?

Tibiotalar

Distal tibiofibular

Subtalar

Intertarsal

Tarsometatarsal

Metatarsophalangeal

Interphalangeal

Sesamoid articulations

Wich joints of the shoulder can be affected by OA?

Acromioclavicular

Glenohumeral

Which joints of the elbow can be affected by OA?

Radiocapitellar

Ulnotrochlear

Proximal radioulnar

What is the term for OA at the DIP joint?

Heberden's nodes

What is the term for OA at the PIP joint?

Bouchard's nodes

What gender is most commonly affected by Osteitis condensans ilii?

Females (90%)

What is the most common demographic affected by osteitis condensans ilii?

Multiparous female 20-40 years of age

What are the radiographic findings of osteitis condensing ilii?

Bilaterally symmetrical triangular sclerosis at iliac aspect of sacrum

Normal sacroiliac joint

T or F: Osteitis condensans ilii presents with severe degeneration of the SI joint

False (normal SI joint)

What are the lab findings of osteitis condensans ilii?

Unrewarding

Normal ESR, cell differential and serum analysis

What is the AKA of erosive osteoarthritis?

Inflammatory osteoarthritis

What joints are most affected by erosive osteoarthritis?

PIPs and DIPs

What are the lab findings of erosive OA?

Inconclusive

Elevated erythrocyte sedimentation rate (ESR) (maybe)

Rheumatoid factor negative

What is the name sign of erosive OA in the hands?

Gull wing sign

What are the long term clinical findings of erosive OA?

Chronic progression of disease

Nodular, unstable, and malaligned articulations

What are the radiographic findings of erosive OA?

osteophytes

joint narrowing

sclerosis

What is the term for osteoarthritis at the MTP of Hallux?

Hallux rigidus

What is the normal glenohumeral joint space?

7-11 mm

Which joints of the hand are most affected by OA?

DIPs (Heberden)

PIPS (Bouchard)

Which joint of the hand is not commonly affected by OA?

MCP