title: Ultrasound examination of patellar tendon after harvest for anterior cruciate ligament reconstruction.
abstract: OBJECTIVE
  Reconstruction of ruptured anterior cruciate ligament (ACL) using the middle-third of the patellar tendon has become an established procedure. However, current studies of donor site morbidity have reported discrepant results. This study used ultrasound imaging to evaluate morphologic changes in the patellar tendon after harvest for ACL reconstruction.
  
  
  METHODS
  Twenty-nine patients who had undergone successful ACL reconstruction with patellar tendon graft more than 1 year previously were enrolled in the study. Ultrasound imaging was used to compare the width, thickness, and tissue reaction of patellar tendons between the operated and contralateral sides.
  
  
  RESULTS
  The operated side was 4.8% wider on average than the contralateral side (p < 0.05). The operated side was also 58.3% thicker on average (p < 0.0001), with irregular margins and heterogenous echogenecity.
  
  
  CONCLUSIONS
  The donor site of the patellar tendon was significantly wider and thicker and was heterogenous when examined on sonogram more than 1 year postoperatively.
authors: School of Medicine, National Taiwan University, Taipei, Taiwan.
authors: C H
authors: CH
authors: Hou
authors: C L
authors: CL
authors: Wang
authors: C C
authors: CC
authors: Lin
mesh_terms: D000328:Adult; D016118:Anterior Cruciate Ligament / Q000601:surgery*; D000070598:Anterior Cruciate Ligament Injuries; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D017847:Patellar Ligament / Q000000981:diagnostic imaging* / Q000637:transplantation*; D019651:Plastic Surgery Procedures; D013710:Tendons / Q000000981:diagnostic imaging / Q000637:transplantation; D014463:Ultrasonography