A disorder of bone remodelling where normal balance between bone building and bone break down becomes disorganised will result in to which disease?

Appeared in: AIIMS Raipur NO- 2019 (shift 3rd)

Explanation

Paget's disease is specifically defined as a chronic bone disorder characterized by focal areas of increased and disorganized bone remodeling.
The core pathophysiology involves an initial phase of excessive bone breakdown (osteoclastic activity) followed by a chaotic and excessive phase of bone formation (osteoblastic activity).
This disorganized process results in new bone that is structurally weak, enlarged, and prone to deformity and fracture.
A key microscopic feature is a 'mosaic' pattern of lamellar bone, reflecting the chaotic remodeling.

Option B: Meniere's disease is a disorder of the inner ear, affecting balance and hearing. It has no association with bone remodeling.
Option C: Osteomalacia is characterized by the softening of bones due to defective mineralization, not disorganized remodeling. The bone matrix is laid down but does not calcify properly.
Option D: Rickets is the pediatric version of osteomalacia. It is a failure of mineralization in growing bones and cartilage in children, also typically due to vitamin D deficiency.

Clinical Relevance

Nursing practice connection: Knowing Disorders of Bone Remodeling helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Nurses caring for patients with Paget's disease focus on pain management, promoting safety to prevent falls and fractures, and patient education about the disease and its treatment (e.g., bisphosphonates).
Monitoring serum alkaline phosphatase (ALP) levels is a key nursing responsibility, as it helps assess disease activity and response to treatment.
What if? If a patient with known Paget's disease reports a sudden increase in pain, swelling, or a new deformity in an affected bone, the nurse must consider a pathological fracture or, rarely, malignant transformation to osteosarcoma. This requires prompt escalation and investigation.

How to Approach the Question

First, identify the core concept in the question stem. The key phrase here is 'disorder of bone remodelling... becomes disorganised'.
Next, analyze each option based on its fundamental pathophysiology.
Recall or deduce the definition of each disease. Paget's disease is defined by disorganized remodeling.
Differentiate this from other bone disorders. Osteomalacia and rickets are mineralization defects ('soft bones'), not remodeling defects.
Eliminate options that are clearly unrelated to the system in question, such as Meniere's disease, which affects the inner ear.
Select the option that directly matches the description of disorganized bone remodeling.

Concept Tested & Keywords

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E6 Medicine Davidson Principles Practice 24e p. 1073-1075

E6 Textbook of Biochemistry for medical StudentsDM Vasudevan Part 2 — Subpart A (pp 1-239 of 478) p. 167-169

Practise the full AIIMS Raipur NO- 2019 (shift 3rd)

Attempt every question from this paper in a timed mock, then review the full solution for each one.