Intersection syndrome is a common overuse syndrome of the distal forearm, on the thumb side of the wrist/hand in the first (area of abductor pollicis longus and extensor pollicis) and second (extensor carpi radialis longus and extensor carpi radialis brevis) extensor compartment (Montechiarello et al., 2010).
Important is to differentiate between an actual intersection syndrome and an inflammatory form of tenosynovitis (De Quervain’s disease), ganglion cyst, infections, sprains involving ligaments of the wrist and tumors (Montechiarello et. al., 2010).
Intersection syndrome occurs with activities or professions that require repetitive flexion and extension in the wrist. Looking at athletes they are mainly involved in rowing, skiing, racquetball or tennis, canoeing and weightlifting (Brotzman and Manske, 2011).
Treatments for Intersection Syndrome includes any combination of rest, splinting, ice, antI- inflammatory medication, and/or cortisone injection.
Montechiarello S. et al., 2010, The intersection syndrome: Ultrasound findings and their diagnostic value, Journal of Ultrasound, 13(2), pp: 70-73
Brotzman S.B. and Manske R.C., 2011, Clinical Orthopaedic Rehabilitation E-Book: An Evidence-Based Approach, 3rd Edition, Elsevier Mosby, Philadelphia, PA, p:35