Summary
The synovial and ligamentous structure of 16 human anterior cruciate ligaments (ACL), removed at autopsy, were examined by light microscopy with special regard to their topographical relationships. The soft tissue support of the ACL consists of fibrous, areolar and areolo-adipose synovial tissue. The subsynovial layer comprises a tight fibrous peripheral part and an element of loose connective tissue containing some tight connective tissue strands, vessels and nerves. The collagenous ligamentous part of the ACL is the proper functional tissue and contains approximately 1500 fascicles measuring an average of 250 μm in diameter. These fascicles are composed of bundles of collagen fibres, fibrocytes and deposits of proteoglycans. The synovial and ligamentous structures are attached by the second part of the subsynovial layer, which radiates into the ligamentous tissue and envelops the fascicles like a sheath. By this means the biological connection between these two structures is guaranteed.
The relevance of these findings to operative reconstruction of recent ligamentous injuries is discussed.
Résumé
Etude microscopique de 16 ligaments croisés antérieurs (L. C. A.) prélevés post-mortem en conservant la continuité topographique de leur structure synoviale et ligamentaire. Le revêtement synovial du L. C. A. se compose de trois types différents de tissu: fibreux, aréolaire et aréolo-adipeux. La synoviale elle-même est constituée de deux couches dont la seconde partie, la sous-synoviale, se différencie en une partie périphérique, fibreuse et dense et une partie faite de tissu conjonctif lâche, porteur des structures vasculaires et nerveuses. Le tissu collagène du L. C. A., le vrai tissu fonctionnel, contient environ 1500 fascicules d'un diamètre moyen de 250 μm. Ces fascicules sont constitués de faisceaux de fibres collagènes, de fibrocytes et de protéoglycans. Les structures synoviales et ligamentaires sont reliées entre elles par l'intermédiaire de la couche sous-synoviale qui irradie dans le tissu ligamentaire dont elle engaîne les fascicules. Ainsi est établie une connexion biologique entre ces deux structures.
Les conséquences de cette étude sur la réparation chirurgicale des ruptures récentes du L. C. A. sont discutées.
Similar content being viewed by others
References
Abbott LRC, Saunders JBDM, Bost FC, Anderson CE (1944) Injuries to the ligaments of the knee joint. J Bone Joint Surg 26: 503–521
Alm A, Strömberg B (1974) Vascular anatomy of the patellar and cruciate ligaments. Acta Chir Scand (Suppl) 445: 25–35
Amiel D, Frank C, Harwood F, Fronek J, Akeson W (1984) Tendons and ligaments: A morphological and biochemical comparison. J Orthop Res 1: 257–265
Arnoczky SP, Rubin RM, Marshall JL (1979) Microvasculature of the cruciate ligaments and its response to injury. J Bone Joint Surg (Am) 61: 1221–1229
Arnoczky SP (1983) Anatomy of the anterior cruciate ligament. Clin Orthop 172: 19–25
Barland P, Novikoff AB, Hamerman D (1962) Electron microscopy of the human synovial membrane. J Cell Biol 14: 207–220
Beauchamp P, Laurin CA (1976) Le ligament croisé antérieur: Notions actuelles. Union Med Can 105: 1380–1386
Bloom W, Fawcett DW (1975) A textbook of histology, Saunders Company, Philadelphia London Toronto, pp 158–195
Brantigan OC, Voshell AF (1941) The mechanics of the ligaments and menisci of the knee joint. J Bone Joint Surg 23: 44–66
Castor CW (1960) The microscopic structure of normal human synovial tissue. Arthritis Rheum 3: 140–151
Clancy WG, Narechania RG, Rosenberg TD, Gmeiner JG, Wisnefske DD, Lange TA (1981) Anterior and posterior cruciate ligament reconstruction in rhesus monkeys. J Bone Joint Surg (Am) 63: 1270–1284
Danylchuk KD, Finlay JB, Krcek JP (1978) Microstructural organization of human and bovine cruciate ligaments. Clin Orthop 131: 294–298
Davies DV, Barnett CH (1960) Struktur und Funktion der Synovialgewebe. In: Baur KF (ed) Medizinische Grundlagenforschung, Band III. Thieme, Stuttgart pp 625–650
Dejour H (1983) Analyse critique des résultats du traitement des laxités fraîches. Déduction thérapeutique, Conclusion-Indication dans les laxités fraîches. Rev Chir Orthop 69: 269–270
Elmore SM, Malmgren RA, Sokoloff L (1963) Sclerosis of synovial blood vessels. J Bone Joint Surg (Am) 45: 318–326
Erlanger J, Gasser HS (1937) Electrical signs of nervous activity. Univ. Pennsylvania Press, Philadelphia
Feagin JA, Curl WW (1976) Isolated tear of the anterior cruciate ligament: 5-year follow-up study. Am J Sports Med 4: 95–100
Fick R (1904) Handbuch der Anatomie und Mechanik der Gelenke unter Berücksichtigung der bewegenden Muskeln. Gustav Fischer, Jena, pp 341–394
Gamble JG, Edwards CC, Max SR (1984) Enzymatic adaptation in ligaments during immobilization. Am J Sports Med 12: 221–228
Gerrits PO, Smid L (1983) A new, less toxic polymerization system for the embedding of soft tissues in glycol methacrylate and subsequent preparing of serial sections. J Microsc 132: 81–85
Ghadially FN (1983) Fine structure of synovial joints. Butterworths, London Boston Durban Singapore Sidney Toronto Wellington
Girgis FG, Marshall JL, Al Monajem ARS (1975) The cruciate ligaments of the knee joint. Clin Orthop 106: 216–231
Huth F, Klein W, Douros TH, Jacobs G (1976) Experimentelle lymphostatische arthropathie. Beitr Orthop Traumatol 23: 689–695
Huth F (1983) General pathology of the lymphovascular system. Special pathology of the lymphovascular system. In: Földi M, Casley-Smith JR (eds) Lymphangiology. Schattauer, Stuttgart New York, pp 215–334; 377–474
Karnovsky J (1965) A formaldehyde-glutaraldehyde fixative of high osmolality for use in electron microscopy. J Cell Biol 27: 137A-138A
Kennedy JC, Weinberg HW, Wilson AS (1974) The anatomy and function of the anterior cruciate ligament. J Bone Joint Surg (Am) 56: 223–235
Key JA (1928) The synovial membrane of joints and bursae. In: Cowdry EV (ed) Special cytology. Hoeber, New York, pp 737–765
Lang J (1958) Die Gelenkinnenhaut, ihre Aufbau- und Abbauvorgänge. Gegenbauers Morphol Jahrb 98: 387–482
Langer E, Huth F (1960) Untersuchungen über den submikroskopischen Bau der Synovialmembran. Z Zellforsch 51: 545–559
Lever JD, Ford EHR (1958) Histological, histochemical and electron microscopic observations on synovial membrane. Anat Rec 132: 525–539
Levick JR (1980) Contributions of the lymphatic and microvascular systems to fluid absorption from the synovial cavity of the rabbit knee. J Physiol London 306: 445–461
Marquort W (1931) Zur Histologie der Synovialmembran. Z Zellforsch 12: 34–52
Marshall JL, Arnoczky SP, Rubin RM, Wickiewicz TL (1979) Microvasculature of the cruciate ligaments. Physician Sports Med 7: 87–91
Marshall JL, Warren RF, Wickiewicz TL (1982) Primary surgical treatment of anterior cruciate ligament lesions. Am J Sports Med 10: 103–107
O'Donoghue DH, Rockwood CA, Zaricznyj B, Kenyon R (1961) Repair of knee ligaments in dogs. J Bone Joint Surg (Am) 43: 1167–1178
O'Donoghue DH (1963) A method for replacement of the anterior cruciate ligament of the knee. J Bone Joint Surg (Am) 45: 905–924
Odensten M, Gillquist J (1985) Functional anatomy of the anterior cruciate ligament and a rationale for reconstruction. J Bone Joint Surg (Am) 67: 257–262
Pfab B (1927) Zur Blutgefäßversorgung der Menisci und Kreuzbänder Dtsch Z Chir 205: 258–264
Pförringer W (1982) Hämarthros und Kreuzbänder — biomechanische Untersuchungen. Unfallchirurg 8: 353–367
Rosenberg M, Bartl P, Leško J (1960) Water-soluble methacrylate as an embedding medium for the preparation of ultrathin sections. J Ultrastruct Res 4: 298–303
Rubin RM, Marshall JL (1976) Vascular anatomy of the cruciate ligaments in dogs — normal and injured states. 22nd Annual ORS New Orleans, p 140
Scapinelli R (1968) Studies on the vasculature of the human knee joint. Acta Anat 70: 305–331
Schultz RA, Miller DC, Kerr CS, Micheli L (1984) Mechanoreceptors in human cruciate ligaments. J Bone Joint Surg (Am) 66: 1072–1076
Vladmirov B (1968) Arterial sources of blood supply of the knee joint in man. Acta Med Inst Superior Med 47: 1–10
Weaver JK, Derkash RS, Freeman JR, Kirk RE, Oden RR, Matyas J (1985) Primary knee ligament repair — revisited. Clin Orthop 199: 185–191
Whiteside LA, Sweeney RE (1980) Nutritient pathways of the cruciate ligaments. J Bone Joint Surg (Am) 62: 1176–1180
Zimny ML, Schutte M, Dabezies E (1986) Mechanoreceptors in the human anterior cruciate ligament. Anat Rec 214: 204–209
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Haus, J., Refior, H.J. A study of the synovial and ligamentous structure of the anterior cruciate ligament. International Orthopaedics 11, 117–124 (1987). https://doi.org/10.1007/BF00266696
Issue Date:
DOI: https://doi.org/10.1007/BF00266696