QuestionSBA
QuestionChoice
This patient suffers from osteoarthritis. Osteoarthritis classically presents with joint pain worst on movement and improved by rest. Morning stiffness in osteoarthritis is characteristically short-lived, quite distinct from the lengthy morning stiffness of rheumatoid arthritis. Furthermore, crepitus is a classical finding of osteoarthritis on examination.

There are 4 key signs of osteoarthritis to be aware of on X-ray. They can be remembered by the acronym LOSS:

* Loss of joint space
* Osteophytes
* Subchondral sclerosis
* Subchondral cysts
10000446
a
Loss of joint space
QuestionChoice
Pseudo-fractures are a type of insufficiency fracture which describes the damage caused by normal stress on the dysfunctional bone. In this case, pseudo-fractures are a radiological hallmark of osteomalacia (vitamin D deficiency). Pseudo-fractures occur in osteomalacia due to impaired calcium homeostasis caused by vitamin d deficiency/malabsorption.
10000449
d
Pseudo-fractures
QuestionChoice
Osteoporosis of bone that neighbours a joint is an X-ray sign of rheumatoid arthritis, rather than osteoarthritis. Loss of bone mineral density occurs as a result of inflammatory cytokines, which increase osteoclast activation and recruitment.
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b
Periarticular osteoporosis
QuestionChoice
Soft tissue swelling is a radiological sign of rheumatoid arthritis which occurs due to the inflammatory nature of the disease.
10000448
c
Soft tissue swelling
QuestionChoice
Marginal erosions describe erosions that occur at areas of the bone within the joint capsule not covered by cartilage. Such erosions are often among the earliest radiological signs of rheumatoid arthritis and do not occur in osteoarthritis.
10000450
e
Marginal erosions
Concept
Chapter
2693
3766
Osteoarthritis
Topic
145
Orthopaedics
12636
A 62-year-old female presents to General Practice with a 6-month history of bilateral knee pain which is worse on walking and alleviated by rest. She finds her joints are stiff in the morning but this lasts no longer than 10 minutes. On examination, there is crepitus and a limited range of motion in both knees. You refer the patient for an X-Ray.

Which of the following is most likely to be seen on X-ray?
a