Physical therapist have participated and undergone extensive training pertaining to the biomechanical and movement systems of the body.  This includes 4 years of undergraduate, 3 years in pursuit of a docotorate of physical therapy and then continuing education post-graduate.  Physical therapist are extensively trained in anatomy, physiology and evaluaition and assessment of the human body with a hands on approach.  

I find trigger point dry needling very different from acupuncture.  As physical therapists we are highly capable of identifying specific trigger point that ellicit patient symptoms or more importantly limitiations of their functional ability.  Acupunture utilizes a global approach at restoring the energy within an individuals body systems.  Again dry needling is specific to muscle loci to facilitate a physiological response and aide physical therapists in progressing treaments and restoring patient function

Trigger point dry needling is extremely safe when performed by physical therapists.  I have never been presented with research or evidence stating that dry needling causes injuries to patients.  

I see a crossover between acupunture and physical therapists dry needling only in the use of similar needles. I don't believe acupunture should own the use of monofilament needles.  That's like saying only doctors and nurses can take blood pressure and monitor breathing or heart rate.  In the end I feel both accupunture and trigger point dry needling can benefit patients and their desires to live their lives to the fullest