A lump in the leg. Quiz. 2004 past exam Q. Name the characteristic features of a synovial joint Joint capsule Synovial membrane Synovial fluid / joint cavity Articular cartilage Bone. 2004 past exam Q.
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This is a radiograph of the knee of a patient who has been involved in a motor vehicle accident.
List three (3) structures whose integrity you must test prior to treating this injury.
Osteogenesisimperfecta is a disorder of defective synthesis of collagen type I.
Metastases in bone usually cause a periosteal reaction.
Most osteosarcomas occur before the age of thirty (30) years.
Osteosarcomas are aggressive tumours.
Sclerotic bone around the edge of a lesion in a bone, is a poor prognostic sign.
Giant cell tumours (osteoclastoma) are usually benign.
Many students confused film exposure with osteoporosis
Confusion of the growth plates and sutures as fractures
Many stated that the x-ray was of degenerative changes despite being from a young child ie osteoporosis and osteoarthritis giving fractures. (How many could tell this was a child’s x-ray?)
Confusion of fovea capitis with an abnormality
Confusion of ileum and ilium
Confusion of hip joint with sacroilac joint
Some students couldn’t tell left from right despite it being written on the radiograph.
One student claimed a diagnosis of hepatitis, although osteoporosis and fractures and malignancies were commonest.
Common Errors:- Lack of knowledge in interpreting radiographs. The majority didn’t realise it was a child’s x-ray or didn’t actually notice the growth plate lucencies, then they decided that it was osteoarthritis/osteoporosis and then went looking for evidence to support their ideas.
Simple bone cyst
Giant cell tumor
Giant cell tumour
A patient presents with dull unilateral hip pain, progressing over a week.
If this is a case of osteomyelitis, what local and systemic signs and symptoms might you expect?
Tenderness, warmth, erythema, swelling, fever and rigor may also be present. However, patients with osteomyelitis involving sites such as the hip, vertebrae, or pelvis tend to manifest few signs or symptoms other than pain
The risk of osteomyeletis spreading from the bone shaft to the bone end and the into a joint depends on age. Considering infants, children, and adults, which groups are at higher risk and why?
Infants have capillaries bridging the growth plate.
Adults have the growth plate resorbed.