increase in angle between neck and shoulder - classically difficult birth

weakness/loss of:

therefore, 'waiter's tip deformity' is described as:

arrest of a fall by grabbing on to a projection, or motor vehicle accidents
may be accompanied by damage to sympathetic fibres → Horner's syndrome

functionally injury to ulnar and median nerves
C8-T1

clawed hand -
paralysis of lumbricals = hand becomes extended at the MCPJs and flexed at the IPJs

#anatomy-upper-limb