[Role of the thickness of the graft in osteocartilaginous autotransplantation in the rabbit knee]. / Rôle de lépaisseur des greffons dans l'autotransplantation ostéocartilagineuse du genou chez le lapin.

This experimental study is complementary to the clinical series of cartilaginous autografts in the knee for medial condylar necrosis. The aim was to determine the viability of the articular cartilage in a series of grafts with variable thickness of the underlying spongy bone. The study was done on 36 adult rabbits and the cartilage was studied by biochemical, histochemical and ultrastructural methods. The results are conclusive. The earliest abnormal signs in the first few weeks affect the thinnest grafts of 4 mm whereas the 12 mm thickness grafts hardly show any lesions. It is therefore possible to use large autogenic grafts for osteocartilaginous defects provided the proportion between the area of the articular surface and the underlying spongy bone of the graft is at least 1/4. Under these circumstances, cartilaginous deterioration will be avoided and reduce long term degeneration.

[The importance of the thickness of the bone in osteocartilaginous autografts of the rabbit knee]. / Rôle de l'épaisseur des greffons dans l'autotransplantation ostéocartilagineuse du genou chez le lapin.

This experimental study is complementary to the clinical series of cartilaginous autografts in the knee for medial condylar necrosis. The aim was to determine the viability of the articular cartilage in a series of grafts with variable thickness of the underlying spongy bone.The study was done on 36 adult rabbits and the cartilage was studied by biochemical, histochemical and ultrastructural methods. The results are conclusive. The earliest abnormal signs in the first few weeks affect the thinnest grafts of 4 mm whereas the 12 mm thickness grafts hardly show any lesions.It is therefore possible to use large autogenic grafts for osteocartilaginous defects provided the proportion between the area of the articular surface and the underlying spongy bone of the graft is at least 1/4. Under these circumstances, cartilaginous deterioration will be avoided and reduce long term degeneration.

[The mechanical properties of devices used for the fixation of femoral neck fractures (author's transl)]. / Aspects mécaniques de l'ostéosynthèse des fractures du col du fémur. Etude comprative des différents moyens d'ostéosynthèse.

The authors have studied the mechanical problems of internal fixation of femoral neck fractures, both from the theoretical and experimental point of view. They have tested stability of several types of fixation according to the obliquity of the fracture line. Three types of strain have been applied to fractured dried bone. Fixation by three parallel screws seemed to give the most stability. The authors conclude that, with this type of fixation, early weight-bearing can be resumed by patients with fractures of Pauwels type I and II, but weight-bearing is still dangerous in type III.

[Abnormal transclavicular course of a branch of the supraclavicular nerve (foramen nervi supraclavicularis) (one case) (author's transl)]. / Trajet anormal transclaviculaire d'une branche des nerfs supraclaviculaires (foramen nervi supraclavicularis) (à propos d'un cas).

The clavicle occasionally is pierced by a branch of the supraclavicular nerve as a rare anatomical variant. The supraclavicular nerve-entrapment neuropathy has only been described once in literature before this case of painful shoulder.