Patellar tendon rupture is a rarely reported complication of using a bone-patella tendon-bone (BPTB)autograft in ACL reconstruction. Most cases have been reported in the early post-operative period and should be treated with patellar tendon reconstruction to restore the extensor mechanism. The reference from Cain et. al details management options for intraoperative complications of patella tendon grafts. The reference from Lee et.al demonstrated a 0.2% complication rate from BPTB harvest including 2 patella fractures and 1 patellar tendon rupture treated with reconstruction.
Cain EL Jr, Gillogly SD, Andrews JR. Management of intraoperative complications associated with autogenous patellar tendon graft anterior cruciate ligament reconstruction. Instr Course Lect. 2003;52:359-67.
PMID:12690863 (Link to Abstract)
Lee GH, McCulloch P, Cole BJ, Bush-Joseph CA, Bach BR Jr. The incidence of acute patellar tendon harvest complications for anterior cruciate ligament reconstruction. Arthroscopy. 2008 Feb;24(2):162-6.
PMID:18237699 (Link to Abstract)
Garrick, JG (ED): Orthopaedic Knowledge Update: Sports Medicine 3. Rosemont, IL, American Academy of Orthopaedic Surgeons, 2004, pp 169-181