Tumours and pseudotumorous lesions of the temporomandibular joint: a diagnostic challenge.

Tumours and pseudotumorous lesions originating from the synovial membrane of the temporomandibular joint are rare. We report a series of six cases of such disorders. There were two cases of synovial chondromatosis, two of calcium pyrophosphate dihydrate crystal deposition disease, one nodular synovitis and one synovial sarcoma.

[Use of reverse blood flow vascular island nasolabial pedicle flap in the repair of the columella].

The authors report the use of a vascular island nasolabial flap with facial arterial pedicle and reverse blood flow inspired by the flap described by C. Le Quang in an unpublished indication. This case concerns a 64-year-old patient with a large botryomycoma of the columella.

[Osteosynthesis using micro-plates in fractures of the orbital floor].

The exploration of orbital floor in case of blow-out fractures shows frequently only one or two important fragments. This fact leads us to realize osteosyntheses with titanium micro-plates in this kind of fractures. This was done for ten patients by transconjunctival approach.

A tridimensional study using cuts at a low temperature of the infratemporal region.

Although the infratemporal region is well defined anatomically, its complex topography has been the subject of numerous, and sometimes, opposite works. That is the reason why it appeared necessary for the authors to re-evaluate this topic using the original method of Combelles and Boyer, allowing to define three referential planes, and thereby, a tridimensional shape and the volume of this region. This study allows to conclude that the infratemporal region is a triangular prism with an horizontal main axis 47 mm long.

[A study of the cranio-pharyngo-mandibular space by sections at low temperature].

After acrylic injections into the vessels and mandibular block anaesthesia the pterygo-mandibular space is studied in 38 anatomical pieces. 538 colour slides have been obtained from anatomical cuts at low temperature with the scannigraph system. The results point out that a cranio-pharyngo-mandibular space is clearly distinguished laterally, from a medial maxillo-pharyngeal space.