This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection of Bones & Joints, Subject name: Orthopaedics
Stellate ganglion block is useful in : 
Select and explain. 
A. sudeck osteodystrophy, B. compound palmar ganglion, C. tenosynovitis, D. osteoarthritis of first CMC joint
A: sudeck osteodystrophy
Answer: A: sudeck osteodystrophy 
Explanation: Ans. is 'a' i.e sudecks osteodystrophy Sudecks osteodystrophy has been explained earlier.Other OptionsCompound palmar ganglion It is tubercular chronic tenosynovitis of the flexor tendons of the forearm at the level of wrist.Clinical presentationthere is gradual onset of swelling, with mild aching pain in the region of affected tendon sheaths. The function of the fingers and thumb are impaired.Treatment:Mild cases : Conservative treatment i.e wrist and forearm immobilized in plaster of paris for 2 months and ATT.Severe cases : Sx t/t(excision thoroughly all the thickened and edematous synovial membrane)Tenosynovitis - Inflammation of the synovial lining of a tendon sheath.It may arise from mechanical irritation or from bacterial infection.Treatment of mechanical or frictional tenosynovitis (also known as repetitive stress syndrome) -Trial of local injections of hydrocortisone. If unsuccessful then immobilize the wrist and forearm in POP cast for 3 weeks.t/t of infective tenosynovitis -Acute is treated with antibioticschronic is treated as compound palmar ganglion.Osteoarthritis - Treatment modalities does not include any ganglion block.