title: Combined PCL and PLC reconstruction in chronic posterolateral instability.
abstract: OBJECTIVE
  The posterolateral corner (PLC) is more likely to be injured in combination with the posterior cruciate ligament (PCL) or the anterior cruciate ligament than in isolation. This leads to instability of the knee and loss of function. We hypothesised that combined PCL and PLC reconstruction would restore sufficient stability to allow improvement in patient symptoms and function.
  
  
  METHODS
  19 patients who underwent arthroscopic-assisted single-bundle PCL and PLC reconstruction by a single surgeon were analysed retrospectively. The PLC reconstruction was a modified Larson reconstruction of the lateral collateral ligament and the popliteofibular ligament. The IKDC and Tegner scores were used to assess outcome. Dial test and varus laxity were used to assess improvements in clinical laxity. Posterior laxity was tested using the KT-1000.
  
  
  RESULTS
  The mean follow-up was 38 months (±(2× standard deviations), ±12.3). There were no postoperative complications. All patients had less than 5 mm posterior step-off. 17 of 19 patients had negative dial and varus stress tests. Measured range of motion was reduced by a mean of 10°, but patients did not report any daily activities restrictions. Tegner scores improved from a median pre-operative value of 2 (range 1-4) to 6 (4-9) at final follow-up. The mean postoperative IKDC score was 86 (±11).
  
  
  CONCLUSIONS
  Subjectively, the knee stability achieved allowed daily activities. However, there were remaining abnormalities in range of motion, posterior drawer and rotational laxity, suggesting that normal knee laxity was not restored.
  
  
  METHODS
  IV.
authors: Department of Orthopaedics and Traumatology, Knee Surgery Centre, Hospital Sacro Cuore-Don Calabria, Negrar, Verona, Italy.
authors: Claudio
authors: C
authors: Zorzi
authors: Mahbub
authors: M
authors: Alam
authors: Venanzio
authors: V
authors: Iacono
authors: Vincenzo
authors: V
authors: Madonna
authors: Donato
authors: D
authors: Rosa
authors: Nicola
authors: N
authors: Maffulli
mesh_terms: D000293:Adolescent; D000328:Adult; D001182:Arthroscopy; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000601:surgery*; D007718:Knee Injuries / Q000601:surgery*; D007719:Knee Joint / Q000601:surgery*; D008023:Ligaments, Articular / Q000293:injuries / Q000601:surgery*; D008297:Male; D016119:Posterior Cruciate Ligament / Q000293:injuries / Q000601:surgery*; D019651:Plastic Surgery Procedures / Q000379:methods*; D012189:Retrospective Studies; D055815:Young Adult