Relationships among bone mineral densities, static alignment and dynamic load in patients with medial compartment knee osteoarthritis

• Published in: Rheumatology (Oxford, England) Vol. 40; no. 5; pp. 499 - 505
• Main Authors: Wada, M., Maezawa, Y., Baba, H., Shimada, S., Sasaki, S., Nose, Y.
• Format: Journal Article
• Language: English
• Published: Oxford Oxford University Press 01.05.2001; Oxford Publishing Limited (England)
• Subjects: Absorptiometry, Photon; Aged; Aged, 80 and over; Alignment; Biological and medical sciences; Bone Density - physiology; Bone mineral density; Diseases of the osteoarticular system; Female; Humans; Knee osteoarthritis; Lumbar Vertebrae - diagnostic imaging; Lumbar Vertebrae - metabolism; Male; Mechanical load; Medical sciences; Middle Aged; Osteoarthritis, Knee - diagnostic imaging; Osteoarthritis, Knee - metabolism; Osteoarthritis, Knee - physiopathology; Osteoporosis. Osteomalacia. Paget disease; Posture - physiology; Range of Motion, Articular - physiology; Stress, Mechanical; Tibia - diagnostic imaging; Tibia - metabolism; Weight-Bearing - physiology; Knee; Human; Lumbar spine; Diseases of the osteoarticular system; Internal; Radiologic investigation; Lower limb; Exploration; Bone disease; Density; Knee disease; Biomechanics; Osteoporosis; Alignment; X ray absorption spectrometry; Correlation analysis; Tibia; Arthropathy; Degenerative disease; Bone; Osteoarthritis
• ISSN: 1462-0324; 1462-0332
• DOI: 10.1093/rheumatology/40.5.499

Objective. To investigate the relationships among bone mineral density (BMD), static alignment and the adduction moment of the knee in patients with tibiofemoral osteoarthritis (OA). Methods. Sixty‐nine patients with medial compartment knee OA underwent radiographic evaluation, gait analysis and BMD measurements at the proximal tibia and lumbar spine. Results. The bone mineral distribution of the medial to lateral part of the proximal tibia correlated significantly with the peak knee adduction moment and the mechanical axis. Furthermore, the adduction moment correlated significantly with the mechanical axis. However, the BMD of the lumbar spine and the bone mineral distribution of the posterior to anterior part of the proximal tibia did not correlate with any other measurement. Conclusions. Our results suggest that the bone mineral distribution of the proximal tibia is directly affected but lumbar BMD is not influenced by the local mechanical stress around the knee with medial compartment OA.