title: Magnetic resonance imaging evaluation of patellar tendon graft remodelling after anterior cruciate ligament reconstruction with or without platelet-rich plasma.
abstract: OBJECTIVE
  To evaluate the stages of patellar tendon graft remodelling using magnetic resonance imaging (MRI) after anterior cruciate ligament (ACL) reconstruction with or without platelet-rich plasma (PRP) injection.
  
  
  METHODS
  98 patients aged 18 to 65 years with complete rupture of the ACL were randomised to undergo reconstruction with the autologous patellar tendon grafts with or without PRP injection. For the PRP group, 8 ml of PRP was obtained in the surgery room and was percutaneously injected into the suprapatellar joint after portal suture. MRI was obtained at months 4, 6, and 12. Remodelling stages of the grafts were classified as hypointense, mildly hyperintense, moderately hyperintense, severely hyperintense, and diffusely hyperintense by a radiologist blinded to treatment allocation.
  
  
  RESULTS
  More patients in the PRP group than controls attained higher stages of remodelling at month 4 (p=0.003), month 6 (p=0.0001), and month 12 (p=0.354).
  
  
  CONCLUSIONS
  PRP enabled faster remodelling of patellar tendon grafts.
authors: Instituto de Ortopedia y Traumatologia, Fundacion García Cugat Hospital Quiron Barcelona, Spain. seijastraumatologia@gmail.com
authors: Roberto
authors: R
authors: Seijas
authors: Oscar
authors: O
authors: Ares
authors: Jordi
authors: J
authors: Catala
authors: Pedro
authors: P
authors: Alvarez-Diaz
authors: Xavier
authors: X
authors: Cusco
authors: Ramon
authors: R
authors: Cugat
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D059549:Anterior Cruciate Ligament Reconstruction / Q000379:methods*; D016723:Bone Remodeling; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D017847:Patellar Ligament / Q000637:transplantation*; D053657:Platelet-Rich Plasma; D016037:Single-Blind Method; D055815:Young Adult
keywords: anterior cruciate ligament reconstruction; patellar ligament; platelet-rich plasma; transplantation,
  autologous