Telemetry Recordings of Forces in the Harrington Distraction Rod: A Method for Increasing Safety in the Operative Treatment of Scoliosis Patients.Elfström, Gösta Dr. ENG.; Nachemson, Alf M.D.Clinical Orthopaedics & Related Research: June 1973 - Volume 93 - Issue - ppg 158-172 Symposium: Newest Views on Scoliosis: PDF Only