Musculoskeletal work is a great specialty to get into. Make sure that you pass and meet all requirements here in the USA. Some states have particular or additional requirements, so research Boston/MA in particular. Due to the growing population that now will be insured (i.e. Obamacare) and will seek medical treatments, there's suggested a increase in job rate of up to 34% in the next 5 to 10 years. Recruitment agencies are a great way to attain a desired job, especially if it's your first job or if you need some extra help getting your foot in the door (in your case the door being USA job market). I know from many people that they had very positive results and feedback from using physician recruitment/staffing agencies. The good agencies will have vast databases of available job positions that you can browse and choose. Many recruiters will actually work for fees (paid by the employers), not for a piece of your salary. Keep in mind that recruiters work for employers, not job hunters. Their job is to find the best talent for the position the employer is seeking to fill.