Limitation of motion following anterior cruciate ligament reconstruction

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  • A case-control study

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<jats:p> Limitation of motion following ACL reconstruction is a well-recognized and disturbing complication. The pur poses of this study were to identify and characterize those patients who developed this complication from a series of 527 ACL reconstructions, determine etiologic factors, and make recommendations regarding preven tion and management. </jats:p><jats:p> The case group included 37 patients who required a manipulation under anesthesia because of failure to gain a satisfactory range of motion after an ACL recon struction. Unsatisfactory motion was defined as a flex ion deformity of 10° or more and/or limitation of flexion to less than 120° by 3 months following ACL recon struction. The control group of patients were selected randomly from the overall series and all had a satisfac tory range of motion. </jats:p><jats:p> The cases and controls were then compared by analyzing these variables: age, sex, knee, time from injury to reconstruction, type of tissue used, meniscal abnormalities or surgery, repair of the medial collateral ligament, and postoperative immobilization and rehabil itation. The cases were followed up to assess the range of motion compared to the opposite knee at an average of 26 months postmanipulation. </jats:p><jats:p> Thirty-seven patients (7%) underwent a manipulation under anesthesia, 9 of these (24.3%) also had an arthroscopic arthrolysis. Reconstructions done less than 2 weeks postinjury showed a statistically signifi cant higher rate of knee stiffness. The same trend was also present for those reconstructed 2 to 6 weeks postinjury. All other variables failed to show a significant statistical difference. At followup, the average loss of extension was 4° and loss of flexion 5°. </jats:p><jats:p> The authors suggest that it is prudent to avoid im mediate reconstructive surgery. The stiff knee requires early aggressive management with a manipulation and or arthroscopic arthrolysis. </jats:p>

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