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The main traumatic deformities of the extensor expansion (EE) are the boutonnière lesion (BL) and the mallet finger (MF). The classical BL is characterized by flexion deformity at the proximal interphalangeal joint, with hyperextension of the metacarpophalangeal and terminal interphalangeal joint, caused by the rupture or division of the central slip of the EE in a finger. The MF is defined as a deformity resulting from loss of EE continuity to the distal finger joint. We analyzed the frequency of location for the two hands and for fingers II–V, on 2 consecutive series of 100 cases each. We noticed a slight predominance in the right hand fingers for both types of lesions: 54% for BL, and 57% for MF. Location of BL was as follows: 8% index finger (II); 42% middle finger (III); 29% ring finger (IV) and 21% little finger (V). There was no multidigital involvement in cases of traumatic BL. Location of MF was as follows: 34% index finger (II); 23% middle finger (III); 17% ring finger (IV) and 26% little finger (V). In three clinical cases there were two fingers involved (fingers IV and V). Traumatic lesions of the EE are more frequent in the dominant hand. The BL involve most often the fingers II and III (index and middle fingers), and MF lesions are more often located in fingers III and IV (middle and ring fingers). (Supported by CNMP 62054/2008).

The necessity to perform complex surgical reconstructions at calf level represented a booster for surgical anatomy studies. The term of angiozome includes all the anatomical structures vascularized by a source artery. We studied the muscular teritory of the posterior tibial artery angiozome on 60 anatomical dissection casts and also on 10 lower legs amputated for surgical diseases. For the anatomical casts we used the macroscopic and the mezoscopic dissection. The amputated lower legs were first injected with China ink of different colours (specific for each source artery), followed by injection with Technovit 7143 to underline the arterial trunks and to facilitate their dissection. Correlations between dissection and injecting of the anatomical structures of the calf showed the muscular territory of the posterior tibial artery angiozome at calf level, represented by: the medial part of gastrocnemius, the medial part of soleus, the medial part of popliteal muscle, the medial part of flexor digitorum longus, the distal part of flexor halucis longus and distally the medial part of tibialis posterior muscle. Knowing these anatomical aspects regarding the extension of the muscular territory of the posterior tibial artery is the base for evaluation of the skin territory of this angiozome, constituting the theoretical base for a safe surgical approach of the posterior aspect of the calf.

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