title: Use of an endoscopic aimer for femoral tunnel placement in anterior cruciate ligament reconstruction.
abstract: Accurate placement of the femoral tunnel is a technically difficult aspect of anterior cruciate ligament reconstruction. Various drill guides have been developed to aid in the selection of this site. The purpose of this article is to describe a new drill guide designed to ensure anatomic placement of the femoral tunnel. The guide is used as part of a single-incision arthroscopic anterior cruciate ligament reconstruction technique with a bone-patellar tendon-bone graft secured with interference screws. An intraoperative check of the "pretunnel footprint" can be made to verify correct placement by the remaining cortical margins measurement within an acceptable 1 to 2 mm range before drilling the tunnel to depth. If necessary, minor adjustments to the guidepin location can be made to prevent posterior tunnel margin dimensions of less than 1 mm (troughing) or greater than 2 mm.
authors.forename: D A
authors.initials: DA
authors.lastname: McGuire
authors.forename: S D
authors.initials: SD
authors.lastname: Hendricks
authors.forename: G L
authors.initials: GL
authors.lastname: Grinstead
mesh_terms: D016118:Anterior Cruciate Ligament / Q000000981:diagnostic imaging / Q000601:surgery; D000070598:Anterior Cruciate Ligament Injuries; D020679:Arthroscopes; D001863:Bone Screws; D019723:Endoscopes; D004867:Equipment Design; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007718:Knee Injuries / Q000000981:diagnostic imaging / Q000601:surgery*; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D011859:Radiography; D013709:Tendon Transfer / Q000295:instrumentation; D013977:Tibia / Q000000981:diagnostic imaging / Q000601:surgery; D016896:Treatment Outcome