[Reconstruction of metadiaphyseal bone defects of the femur with cortical strut allografts in periprosthetic bone loss].

Objective: Biological augmentation and stabilization of high-grade bone defects with structural allografts from donor femur halfs.

Indications: Severe bone defects with aseptic loosening of hip prosthesis, periprosthetic femoral fracture or non-union, possibly even in cases of a healed infection.

Contraindications: Local or systemic infection.

[Briard's sagittal sliding osteotomy of the lateral condyle in total knee arthoplasty of the severe valgus knee].

Objective: Distalization of the insertion of the lateral collateral ligament and popliteus tendon by sliding osteotomy of the lateral femur condyle in order to correct a residual contracture in extension in total knee arthroplasty (TKA) of the severe valgus deformity.

Indications: Genuine and other valgus deformity of the knee.

Contraindications: Severe laxity of the medial collateral ligament; common contraindications of joint replacement.

Complications following radiosynoviorthesis in osteoarthritis and arthroplasty: osteonecrosis and intra-articular infection.

Objectives: In the literature, radiosynoviorthesis (RSO) has been associated only with a small number of complications. There is a trend towards increasing the use of RSO in diverse indications. After repeatedly observing several complications following RSO, a retrospective evaluation was undertaken to estimate the safety of this method.

Reinforcement of deficient femur with inlay strut grafts in revision hip arthroplasty: a small series.

Failure of the femoral component due to severe loss of femoral bone is an important long-term complication of total hip arthroplasty. We treated four patients with a type IV femoral defect (Paprosky classification) because of aseptic and septic loosening. To enhance bone stock and create a stable prosthetic reconstruction we used femoral allografts as inlay strut grafts alone or combined with onlay strut grafts and impaction grafting.

[Revision of failed acetabular cups with extensive structural allografts].

Aim: Structural allografts are used with encouraging results for revision of failed total hip arthroplasty and in the surgery of bone tumours. The aim of the present study is to describe the clinical and radiological results achieved with structural allografts in revision of a total hip arthroplasty.

Material And Methods: 15 patients (12 female and 3 male patients) were revised with an acetabular defect situation of type 3 A or 3 B according to the Paprosky classification.