This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolic Disorders Leading to Osteosclerosis, Subject name: Orthopaedics
Distal phalangeal tuft resorption is seen in 
Select and explain. 
A. Hypoparathyroidism, B. Psoriaticarthropathy, C. SLE, D. Hyperthyroidism
B: Psoriaticarthropathy
Answer: B: Psoriaticarthropathy 
Explanation: Ans. is 'b' i.e., Psoriatic arthropathy Acro-osteoivsiso Acro-osteolysis is the term used to describe resorption of the distal phalangeal tufts. Causes are : -i) Sclerodermav) Trauma & thermal injuryii) Hyperparathyroidismvi) Epidermalysis bullosaiii) Arthropathy (RA, Psoriasis)vii) Neuropathy (diabetes, syringomyelia)iv) Raynaud's