use of a high resolution probe (7-15mhz) is essential.
careful scanning technique to avoid anisotropy (and possible misdiagnosis).
beam steering or compounding can help to overcome anisotropy in linear structures such as tendons.
good colour / power / doppler capabilities when assessing vessels or vascularity of a structure.
be prepared to change frequency output of probe (or probes) to adequately assess both superficial and deeper structures.