CONTENTS Historical Data Experimental Data Statement of Problem General Outline of Experimental Work Process of Tendon Repair as Revealed by Experiments with Tendon Suture Technic of Experiments Protocols of Experiments with Tendon Suture The Process of Repair in a Sutured Tendon Process of Repair as Revealed by Experiments with Tendon Grafts Technic of Experiments Protocols of Experiments with Tendon Grafts The Process of Repair in a Tendon Gap Bridged Across by a Tendon Graft Résumé of Healing Process of Tendon Grafts Comment on Results of Experimental Work The Importance of the Sheath and Peritendinous Tissues The Tendon Summary Bibliography The process of tendon repair and the technic of tendon suture and tendon graft are two of the major problems of present day surgery. The thirty-eighth session of the French Congress of Surgery, 1929, devoted considerable time to the report of Bonnet and Bloch on the repair of tendons of the