Archaeometrical studies and recent evolution of a stretch of coast at the Northern part of “Jebel Akhdar” (Libya)

The piers of the ancient harbour of Susa (Apollonia-Libya), dating back to the Greek-roman age, are actually submerged at about two meters under the sea level. With the present research we have examined the possible causes that can have determinated the actual condition of these portual structures. In order to this aim, have been analysed the direct data, relative to the alterations undergone by plain sounding-depth, and also to the altitudes of the sea-terraces in the stretch of coast between Ras Aàmer and Ras El Hilal (Northern Cyrenaica), as well as those indirect data, that are inherent in the eustatic and isostatic modifications. It has mainly turned out that the portual structures of Apollonia cannot have undergone sinkings or dislocations, since they are perfectly jointly for the rocky substratum. In the examinated stretch of coast, in the light of the acquired results, though some phenomena of subsidence, already supposed by previous AA, cannot be excluded, appears the possibility that the rise of the sea level could be the responsible for the submersion. This rise is started, according to the specialist literature, in the third Century A.D., and it is imputable to climatic global modifications

Accuracy of fibula reconstruction using patient-specific Cad/Cam plates: a multicenter study on 47 patients

Objectives: This prospective study evaluated the accuracy of mandibular reconstruction using free fibular flaps (by comparing virtual plans to the three-dimensional postoperative results), and the extent of bone-to-bone contact after computer-assisted surgery. Methods: We included 65 patients who underwent partial-continuity mandibular resections from February 2013 to January 2017, and evaluated virtual planning, surgical techniques, and accuracy. Results: Forty-seven patients were analysed. A total of 112 fibular segments received 54 implants. We measured 227 distances between landmarks to assess the accuracy of reconstruction. Postoperative reconstruction accuracy ranged from 0.5 to 3 mm. Conclusion: Virtual surgical planning very accurately translated simulation into reality, particularly in patients requiring large, complex mandibular reconstructions using multiple fibular segments. Level of evidence: 4 Laryngoscope, 2021