I. General Considerations for the Achilles Tendon -- 1. Anatomy and Pathology of the Achilles Tendon: Tendonitis, Tendinitis, or Tendinopathy, Which Is It? -- 2. Physical Examination and Imaging of the Achilles Tendon -- 3. The Effect of the Plantaris Tendon on Achilles Tendinopathy -- 4. Summary of Data Comparing Nonoperative, Open, and Minimally Invasive Treatment of Achilles Tendon Tears -- 5. Nonoperative Treatment of Acute Achilles Tendon Tears -- II. Acute Injuries of the Achilles Tendon -- 6. Ruptures of the Medial Gastrocnemious Tendon (Tennis Leg) -- 7. Percutaneous and Minimally Invasive Surgery for Acute Achilles Tendon Tears -- 8. Minimally Invasive Treatment of Achilles Tendon Tears -- 9. Traditional Open Repair of Achilles Tendon Tears -- 10. Management of Achilles Tendon Tears in Athletes -- 11. Achilles Tendon Sleeve Avulsion Injuries: Diagnosis and Management -- 12. Rehabilitation of Achilles Tendon Tears (Operative and Nonoperative) -- III. Chronic Tendinopathy of the Achilles Tendon -- 13. Nonoperative Management of Insertional and Noninsertional Achilles Tendinopathy -- 14. Tendinoscopy of Noninsertional Achilles Tendinopathy -- 15. Open Debridement of Noninsertional Achilles Tendinopathy -- 16. Operative Management of Insertional Achilles Tendinopathy -- IV. Management of Acute and Chronic Achilles Complications -- 17. Reconstruction of Chronic Achilles Tendon Ruptures -- 18. Soft Tissue Reconstruction of Achilles Tendon Associated Wounds -- 19. Orthobiologic Augmentation of Achilles Tendinitis and Tendon Repairs.