1. Noyes FR, Mooar PA, Matthews DS, Butler DL. The symptomatic anterior cruciate-deficient knee. Part I: the long-term functional disability in athletically active individuals. J Bone Joint Surg Am . 1983;65(2):154-162.
2. Nagineni CN, Amiel D, Green MH, Berchuck M, Akeson WH. Characterization of the intrinsic properties of the anterior cruciate and medial collateral ligament cells: an in vitro cell culture study. J Orthop Res . 1992;10(4):465-475.
3. Hefti FL, Kress A, Fasel J, Morscher EW. Healing of the transected anterior cruciate ligament in the rabbit. J Bone Joint Surg Am . 1991;73(3):373-383.
4. Andersson C, Odensten M, Good L, Gillquist J. Surgical or non-surgical treatment of acute rupture of the anterior cruciate ligament. A randomized study with long-term follow-up. J Bone Joint Surg Am . 1989;71(7):965-974.
5. Tang Z, Yang L, Wang Y, et al. Contributions of different intraarticular tissues to the acute phase elevation of synovial fluid MMP-2 following rat ACL rupture. J Orthop Res . 2009;27(2):243-248.
6. Woo SL, Chan SS, Yamaji T. Biomechanics of knee ligament healing, repair and reconstruction. J Biomech . 1997;30(5):431-439.
7. Yoshida M, Fujii K. Differences in cellular properties and responses to growth factors between human ACL and MCL cells. J Orthop Sci . 1999;4(4):293-298.
8. Taylor DC, Posner M, Curl WW, Feagin JA. Isolated tears of the anterior cruciate ligament: over 30-year follow-up of patients treated with arthrotomy and primary repair. Am J Sports Med . 2009;37(1):65-71.
9. Noyes FR, Matthews DS, Mooar PA, Grood ES. The symptomatic anterior cruciate-deficient knee. Part II: the results of rehabilitation, activity modification, and counseling on functional disability. J Bone Joint Surg Am . 1983;65(2):163-174.
10. Malanga GA, Giradi J, Nadler SF. The spontaneous healing of a torn anterior cruciate ligament. Clin J Sport Med . 2001;11(2):118-120.
11. O’Donoghue DH, Rockwood CA Jr, Frank GR, Jack SC, Kenyon R. Repair of the anterior cruciate ligament in dogs. J Bone Joint Surg Am . 1966;48(3):503-519.
12. Guenoun D, Le Corroller T, Amous Z, Pauly V, Sbihi A, Champsaur P. The contribution of MRI to the diagnosis of traumatic tears of the anterior cruciate ligament. Diagn Intervent Imaging . 2012;93(5):331-341.
13. Andrish J, Holmes R. Effects of synovial fluid on fibroblasts in tissue culture. Clin Orthop Relat Res . 1979;(138):279-283.
14. Zimny ML, Schutte M, Dabezies E. Mechanoreceptors in the human anterior cruciate ligament. Anat Rec . 1986;214(2):204-209.
15. Bush-Joseph CA, Cummings JF, Buseck M, et al. Effect of tibial attachment location on the healing of the anterior cruciate ligament freeze model. J Orthop Res . 1996;14(4):534-541.
16. Sung KL, Whittemore DE, Yang L, Amiel D, Akeson WH. Signal pathways and ligament cell adhesiveness. J Orthop Res . 1996;14(5):729-735.
17. Deie M, Ochi M, Ikuta Y. High intrinsic healing potential of human anterior cruciate ligament. Organ culture experiments. Acta Orthop Scand . 1995;66(1):28-32.
18. Voloshin I, Bronstein RD, DeHaven KE. Spontaneous healing of a patellar tendon anterior cruciate ligament graft. A case report. Am J Sports Med . 2002;30(5):751-753.
19. Costa-Paz M, Ayerza MA, Tanoira I, Astoul J, Muscolo DL. Spontaneous healing in complete ACL ruptures: a clinical and MRI study. Clin Orthop Relat Res . 2012;470(4):979-985.
20. Kurosaka M, Yoshiya S, Mizuno T, Mizuno K. Spontaneous healing of a tear of the anterior cruciate ligament. A report of two cases. J Bone Joint Surg Am . 1998;80(8):1200-1203.
21. Fujimoto E, Sumen Y, Ochi M, Ikuta Y. Spontaneous healing of acute anterior cruciate ligament (ACL) injuries - conservative treatment using an extension block soft brace without anterior stabilization. Arch Orthop Trauma Surg . 2002;122(4):212-216.
22. Ihara H, Miwa M, Deya K, Torisu K. MRI of anterior cruciate ligament healing. J Comput Assist Tomogr . 1996;20(2):317-321.
23. Graf BK, Lange RH, Fujisaki CK, Landry GL, Saluja RK. Anterior cruciate ligament tears in skeletally immature patients: meniscal pathology at presentation and after attempted conservative treatment. Arthroscopy . 1992;8(2):229-233.
24. Kannus P, Jarvinen M. Knee ligament injuries in adolescents. Eight year follow-up of conservative management. J Bone Joint Surg Br . 1988;70(5):772-776.
25. Pressman AE, Letts RM, Jarvis JG. Anterior cruciate ligament tears in children: an analysis of operative versus nonoperative treatment. J Pediatr Orthop . 1997;17(4):505-511.
26. Vavken P, Murray MM. Treating anterior cruciate ligament tears in skeletally immature patients. Arthroscopy . 2011;27(5):704-716.
27. Lee K, Siegel MJ, Lau DM, Hildebolt CF, Matava MJ. Anterior cruciate ligament tears: MR imaging-based diagnosis in a pediatric population. Radiology . 1999;213(3):697-704.
28. Major NM, Beard LN Jr, Helms CA. Accuracy of MR imaging of the knee in adolescents. AJR Am J Roentgenol . 2003;180(1):17-19.
29. Sampson MJ, Jackson MP, Moran CJ, Shine S, Moran R, Eustace SJ. Three Tesla MRI for the diagnosis of meniscal and anterior cruciate ligament pathology: a comparison to arthroscopic findings. Clin Radiol . 2008;63(10):1106-1111.
