Dr. Donald Ross Armstrong Dr. Donald Ross Armstrong 73 Delhi Street Suite 102 Guelph ON N1E 6L9 Phone: (519) 763-7433 Fax: (519) 763-6271 Surgeon Directory Non-Surgical Treatment Patient Education Videos Joint Replacements Surgical Wait Times TeleOrthopaedics.com Online Physiotherapy Home Care Physio Spinal Conditions Shoulder Injuries Elbow Injuries Hand & Wrist Injuries Hip Injuries Knee Injuries Foot & Ankle Injuries Pediatric Conditions Joint Replacements Sports Injuries Pain Management Cartilage Repair General Conditions