title: Initial laxity does not correlate with subsequent laxity after ACL reconstruction in humans: a prospective evaluation.
abstract: Fifty-seven patients without other ligament injury underwent anterior cruciate ligament reconstruction (50 B-L-B, 7 hamstring). KT-1000 assessments were made preoperatively in clinic under anesthesia before and immediately after fixation and at 6-month follow-up. Preoperative manual maximum (ManMax) side-to-side difference (ManMaxdelta) under anesthesia (9.2 +/- 3.5 mm) was significantly larger than in clinic (6.1 +/- 1.8 mm), P < .0001. This difference is important when arthrometer thresholds are used for decision making. ManMaxdelta increased significantly from -0.7 +/- 2.5 mm immediately after surgery to 2.1 +/- 2.3 mm at 6 months (P < .0001). There was no significant correlation between immediate postoperative and 6-month ManMaxdelta (r = .125).
authors.affiliation: University of California, San Diego, California, USA. rpedowitz@ucsd.edu
authors.forename: Robert A
authors.initials: RA
authors.lastname: Pedowitz
authors.forename: Debra J
authors.initials: DJ
authors.lastname: Popejoy
mesh_terms: D000293:Adolescent; D000328:Adult; D000070598:Anterior Cruciate Ligament Injuries; D004724:Endoscopy; D005260:Female; D006801:Humans; D007718:Knee Injuries / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012421:Rupture