1. Investigations in generalized osteoarthritis
Investigations in generalized osteoarthritis. Part 1: Genetic study of Heberden's nodes 
U. Irlenbusch, M.D., Th. Schäller 
Osteoarthritis and Cartilage 
Volume 14, Issue 5, Pages (May 2006)
DOI: /j.joca
Copyright © 2005 OsteoArthritis Research Society International Terms and Conditions

2. Fig. 1
Fictitious clan table of 93 index cases with 156 descendants: ♦ total, □ male, and ○ female. White signs: healthy till now. Black signs: manifest affected.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2005 OsteoArthritis Research Society International Terms and Conditions

3. Fig. 2
Combination square in monomeric inheritance for heterozygous–homozygous parents. H=gene for trait Heberden's arthritis and h=normal gene.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2005 OsteoArthritis Research Society International Terms and Conditions

4. Fig. 3 Age pattern of the daughters of the index cases.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2005 OsteoArthritis Research Society International Terms and Conditions