Changes in Weight of Muscles of Arthritic and Immobilized Arthritic Joints. ∗

Abstract

Summary

1. Arthritis of the tibio-tarsal joint produced in cats by injecting silver nitrate, causes an atrophy of the soleus and tibialis anticus muscles. Tables I and II, Fig. 1 and 2.

2. Immobilization of the inflamed tibiotarsal joint in hyperflexion results in a loss of weight of the tibialis that is similar or slightly less marked than that caused by arthritis alone. Table III, Fig. 1. In these conditions the soleus keeps its normal weight. Table IV, Fig. 2.

3. Immobilization of the inflamed joint in hyperextension results in an increase of weight of the tibialis. Table V, Fig. 1. The soleus, on the other hand, shows a greater loss of weight than by arthritis alone. Table VI, Fig. 2.