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  • Title: Results of arthroscopic treatment of symptomatic loss of extension following anterior cruciate ligament reconstruction.
    Author: Hasan SS, Saleem A, Bach BR, Bush-Joseph CA, Bojchuk J.
    Journal: Am J Knee Surg; 2000; 13(4):201-9; discussion 209-10. PubMed ID: 11269539.
    Abstract:
    Symptomatic loss of knee extension is an important cause of postoperative morbidity following anterior cruciate ligament reconstruction. In a series of 342 consecutive reconstructions performed by the senior author, 17 knees in 16 patients had symptomatic extension deficits (>5 degrees) refractory to a minimum of 4 months of intensive physical therapy that required arthroscopic debridement. Thirteen knees in 12 patients were available for evaluation at a mean follow-up of 3.9+/-1.7 years and form the treatment group. Twenty-six knees in 26 patients who underwent reconstruction but did not develop arthrofibrosis were matched to the treatment group and served as controls. At a mean of 12+/-8 months following reconstruction, patients in the treatment group underwent examination under anesthesia, arthroscopic debridement, revision notchplasty as necessary, and controlled manipulation. Postoperatively, patients were assigned to a closely supervised rehabilitation protocol emphasizing restoration of knee extension. At final evaluation, knee extension deficits had improved from a preoperative mean of 10 degrees (SD 5 degrees) to 3 degrees (SD 4 degrees) (P<.001). Multiple functional rating scales also were used to evaluate the treatment and control groups. With the numbers available, there was no statistically significant difference in function at final evaluation between the treatment and control groups. The best treatment for loss of knee extension is preventive. Complications are avoided by careful patient selection, appropriate timing of surgery, attention to operative detail, and aggressive rehabilitation. However, patients reaching a plateau in rehabilitation with significant residual extension deficits, patellofemoral symptoms, or both predictably benefit from arthroscopic debridement.
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