Open AccessAnterior cruciate ligament changes in the human knee joint in aging and osteoarthritis
Author(s) -
Hasegawa Akihiko,
Otsuki Shuhei,
Pauli Chantal,
Miyaki Shigeru,
Patil Shantanu,
Steklov Nikolai,
Kinoshita Mitsuo,
Koziol James,
D'Lima Darryl D.,
Lotz Martin K.
Publication year - 2012
Publication title -
arthritis & rheumatism
Language(s) - English
Resource type - Journals
eISSN - 1529-0131
pISSN - 0004-3591
DOI - 10.1002/art.33417
Subject(s) - osteoarthritis , anterior cruciate ligament , cartilage , medicine , degeneration (medical) , knee joint , ligament , metaplasia , pathology , anatomy , surgery , alternative medicine
Objective The development and patterns of spontaneous age‐related changes in the anterior cruciate ligament (ACL) and their relationship to articular cartilage degeneration are not well characterized. This study was undertaken to investigate the types and temporal sequence of age‐related ACL changes and to determine their correlation with cartilage lesion patterns at all stages of osteoarthritis (OA) development in human knee joints without prior joint trauma. Methods Human knee joints (n = 120 from 65 donors ages 23–92) were obtained at autopsy, and ACLs and cartilage were graded macroscopically and histologically. Inflammation surrounding the ACL was assessed separately. Results Histologic ACL substance scores and ligament sheath inflammation scores increased with age. Collagen fiber disorganization was the earliest and most prevalent change. The severity of mucoid degeneration and chondroid metaplasia in the ACL increased with the development of cartilage lesions. A correlation between ACL degeneration and cartilage degeneration was observed, especially in the medial compartment of the knee joint. Conclusion Our findings indicate that ACL degeneration is highly prevalent in knees with cartilage defects and may even precede cartilage changes. Hence, ACL deficiencies may not only be important in posttraumatic OA, but may also be a feature associated with knee OA pathogenesis in general.