back to the original point....
1) how is your patient going, takajokomo
2) you needed far more description of the patient if you required a decent response ie: more postural information, nerve testing, neural length testing, muscle length and strength testing...i am sure you did do all these things but in order to appraise it online we need more info!
3) you definitely do need to assess the lumbar joints and movements to rule out disc and facet problems. if these are all clear you need to look closely at the pelvis and work your way through the issues there (a topic i am slowly coming to grasp...textbooks on the way as we speak...). the groin pain and hip external rotation are sending alarms in my head. . .
4) this certainly does not seem like a condition where ultrasound will be of ANY benefit whatsoever so i suggest take that five or so minutes in each session to reassess and prescribe exercises.

keep us posted
Additional Comment I forgot:
message to thabiso

i see you are from botswana. i studied in south africa and since moving to and working in australia i realise how the universities in south africa (not sure of botswana) are quite backward in their research. no need to apologise for your questions. just hit those journals man!

good luck!