title: Isolated AL bundle reconstruction of the PCL.
abstract: BACKGROUND
  The purpose of this study was to evaluate the clinical and radiologic results after isolated reconstruction of the posterior cruciate ligament (PCL) using the semitendinosus (ST) and gracilis (GR) tendons with the arthroscopic single-bundle technique.
  
  
  METHODS
  All patients upon whom we had performed a single-bundle PCL reconstruction between 2002 and 2005 prospectively underwent a standardized follow-up examination after 2 years. Isolated PCL reconstruction was carried out on 41 patients during the observation period. Pre- and postoperative stress radiographs were taken using the Telos stress device in order to evaluate the dorsal translation. Knee joint function and degree of activity were recorded using the Tegner activity score, the subjective International Knee Documentation Committee (IKDC) score, and the overall IKDC score.
  
  
  RESULTS
  33 of 41 patients (80.4%, 17 men, 16 women) completed the study. The posterior tibial translation of -10.1 ± 1.8 mm had an overall average improvement to a postoperative value of -5.0 ± 2.5 mm (p < 0.001). The patients showed a significant improvement in the Tegner activity score from an average 2.8 ± 0.8 points to 5.9 ± 1.2 points (p < 0.001). Evaluation of the subjective IKDC showed a significant improvement from a preoperative score of 41.86 ± 11.49 points to a postoperative score of 69.54 ± 11.39 points (p < 0.001). In total, 24 patients (72.8%) exhibited a normal or nearly normal outcome.
  
  
  CONCLUSIONS
  The abovementioned reconstruction technique can achieve a stable knee function in patients with isolated PCL insufficiency. The isolated single-bundle PCL reconstruction offers an improvement regarding the activity level and stability of the knee joint.
  
  
  METHODS
  Level IV.
authors: Department of Orthopedic Surgery, Ruhr-University Bochum, St. Josef-Hospital, Gudrunstrasse 56, Bochum, Germany. m.lahner@klinikum-bochum.de
authors: Matthias
authors: M
authors: Lahner
authors: Tobias
authors: T
authors: Vogel
authors: Lars Victor
authors: LV
authors: von Engelhardt
authors: Martin S
authors: MS
authors: Schulz
authors: Michael J
authors: MJ
authors: Strobel
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D007718:Knee Injuries / Q000150:complications*; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures / Q000379:methods*; D016119:Posterior Cruciate Ligament / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods; D013709:Tendon Transfer / Q000379:methods; D055815:Young Adult