Lower Limb 2

Question 1

What is Melorheostosis

Answer 1

Irregular thickening of the cortex along one side of a bone or bones of one extremity

Appearance look like molten wax flowing down the side of a candle

Question 2

Osteoarthritis at forefoot

Answer 2

• Most common at 1st MTP joint
• Osteophytes are usually at the dorsal medial surface of 1st metatarsal head.
• Hallux valgus deformity

Question 3

Gout clinical features and radiographic features

Answer 3

clinical features
- males
- more than 40 yrs old
- MC in 1st MTP joint

Radio features
- soft tissue swelling
- tophi
- preserved articular space
- bony erosion (overhanging sign)

Question 4

Fatigue and insufficiency fracture

Answer 4

Fatigue
- abnormal stresses on normal bone

Insufficiency
- normal stresses on abnormal bone

Question 5

Stress fracture

Answer 5

• solid periosteal reaction progressing to callus formation in diaphyseal fractures
• linear sclerosis and corical thickening more common

T1 - low signal
T2 - high signal (soft tissue swelling)

Question 6

Kohler’s DIsease

Answer 6

Avascular necrosis of navicular

• Patchy or homogenous sclerosis, collapse, fragmentation
• Joint space are preserved

Question 7

Freiberg’s Disease

Answer 7

rare condition that primarily affects the second or third metatarsal (the long bones of the foot)

Radiologic features
- Articular cortex deformity
- Altered density (crescent sign)
- Joint space wider. Later degenerative happen become narrowed
- Metatarsal shaft