It has long been recognised that the periosteal membrane has osteogenic capability and experimental studies have concluded that periosteum transplanted to a distant site could also be osteogenic. This ability of periosteum to generate new bone at distant sites may have clinical application. In the laboratory setting however periosteal flaps in animals have demonstrated variable results. Little clinical work using the technique of periosteal transfer has been reported, with only individual case reports in the literature.

A clinical review of a series of three fracture patients in whom vascularised periosteal transfer has been used is presented. Cases involved a primary bony defect at the fracture site (first metatarsal), established non-union (tibia) or post-traumatic AVN (talar dome). The technique is described and clinical follow-up of the patients is presented.

In each instance evidence of lasting new bone formation was demonstrated clinically and radiologically.

The efficacy of this technique in forming new bone is demonstrated. The technique may have utility alongside other techniques in cases where new bone is required.

The articular cartilage of the patella was studied in 100 knees at necropsy. In twenty-one of these knees the cartilage changes were related to the trabecular architecture of the underlying bone. It would appear that the initiation and location of cartilage damage and its rate and degree of progression are related to the relative stiffness of the underlying cancellous bone. On the basis of our observations we suggest that the diagnosis "chondromalacia of the patella" should be reserved for patients with asymptomatic or transiently symptomatic fibrillation of the articular cartilage of the central medial patellar facet. Those patients with persistent patellofemoral pain should be considered to have some other syndrome.