This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Skeletal traction is given by -a) K-wireb) Pavlik harnessc) Denham pind) Steinmann's pine)  Rush pin 
Select and explain. 
A. abc, B. ad, C. acd, D. bde
C: acd
Answer: C: acd 
Explanation: Contraindications of skin traction 

Skin damage or sepsis in the area.
Deep vein thrombosis
Suspected vascular defecit
Anaesthetic limb (neurological deficit).
Force required is > 5 kg & for long duration due to changes of peeling off of skin.
In small abrasions it can be applied with proper padding but large abrasions are relative contraindications