Chelsea Sanscartier treats orthopedic and sports-rehabilitation patients at Rehab United in La Mesa, practicing from the 7,200-square-foot Fletcher Parkway facility near Sharp Grossmont Hospital. Her treatment plans integrate manual therapy with progressive functional exercises on the clinic's turf and gym-floor training areas, addressing kinetic-chain dysfunction through the same biomechanical lens applied to soft-tissue mobilization at Bodywork 4 Health. Rehab United's Applied Functional Science framework evaluates multi-joint movement patterns rather than isolated injury sites, identifying compensatory dysfunctions above and below the point of pain. Post-concussion and neurological rehabilitation cases involve balance-retraining progressions, vestibular habituation exercises, and graded return-to-activity protocols, with the psychological recovery component addressed through behavioral-health coordination with Grossmont Family Counseling Center in the broader Grossmont medical corridor. The most complex cases involve multi-ligament knee reconstruction patients requiring simultaneous ACL, PCL, and meniscal repair rehabilitation across 16- to 24-week progressive-loading timelines with force-plate symmetry testing at each return-to-sport gate.