JEB -- Ridgel et al. 206 (24): 4453 Figure IG4

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Fig. 4. Orientation of the tibio-tarsal joint in aged animals. (A) A 60-week-old intact animal. The arrow shows the tibio-tarsal joint of the right prothoracic leg. (B) The same animal as in A at 63 weeks with `tarsus catch'. The angle of the joint is decreased in the animals with `tarsus catch'.