[Total hip arthroplasty using the Hardinge approach. Clinical results in 63 cases]. / Arthroplastie totale de hanche par voie de Hardinge. Résultat clinique de 63 cas.

The recently described Hardinge approach is currently widely used for implanting total hip prostheses. It is characterized by a dissociation of the fibers of the mid-gluteal, of which the anterior fibers remain continuous with the vastus lateralis. To assess the functional impact, a series of 63 prostheses implanted with the Hardinge approach was compared with an identical series performed with the posterior approach. Results show a lower frequency of dislocation with the Hardinge approach, but also a 33 p. cent residual functional deficiency of the mid-gluteal at one year, compared with 17 p. cent with the posterior approach. A modification of the technique is proposed to limit this phenomenon.

[Femoropatellar complications of 87 total condylar and Insall Burstein knee joint prostheses]. / Complications fémoro-patellaires de 87 prothèses total condylar et Insall Burstein.

In a group of 87 total knee joint prostheses with posterior stabilization, 18 femoro patellar complications happened. Fractures, loosening, dislocations and subluxations are relatively rare. The persistence of residual patellar pain was more frequent with a high proportion of femoro-patellar derangement syndrome (FPDS). This last complication was specific of posterior stabilization model (MK II) and its origin is related to the formation of a synovial pannus in front of intercondylar region. In one case, it was surgically removed. The existence of this "FPDS" is statistically correlated with lowering of the patella, posterior position of tibial tuberosity and excessive thickness of the patellar implant complex.