Established in 2003, Rehab United - La Mesa has built its Applied Functional Science-based rehabilitation practice on Fletcher Parkway into a five-location San Diego County network spanning La Mesa, Escondido, Chula Vista, San Diego, and Carlsbad. The practice's biomechanical philosophy treats movement dysfunction in three-dimensional, gravity-loaded positions rather than isolated planes, producing sport-specific return-to-play protocols that graduate patients into functional-fitness environments like CrossFit La Mesa. Vestibular rehabilitation, amputee rehabilitation with prosthetic gait training, and blood flow restriction therapy expand the clinical scope beyond standard orthopedic and sports-medicine caseloads, covering neurological and limb-loss populations. On-site massage therapy and strength-and-conditioning services create a continuum from acute injury through functional fitness, eliminating the referral gaps that occur when rehabilitation and performance training operate at separate facilities. Post-surgical medication management and anti-inflammatory protocols require coordination between treating therapist and dispensing pharmacist, a workflow this practice maintains with nearby providers like Grossmont Pharmacy for patients managing concurrent pharmacological and rehabilitative recovery. The clinic's highest-complexity cases involve transtibial and transfemoral amputee rehabilitation requiring socket-fit assessment, prosthetic alignment optimization, neuromuscular re-education for residual-limb loading, and multi-surface gait training with real-time biomechanical feedback.