Ultra-short stems with proximal load transfer: Clinical and radiographic results at five-year follow-up.

Bone stock preservation is crucial when performing THR in young patients. Following this philosophy, an original ultra-short custom-made implant with extensive proximal load transfer was developed. It presents three very innovative features: absence of the diaphyseal portion of the stem, a well defined lateral flare with load transfer on the lateral column of the femur and a very high femoral neck cut.

Shoulder prosthesis in reconstruction of the scapulohumeral girdle after wide resection to treat malignant neoformation of the proximal humerus.

Progress in preoperative chemotherapy and radiation therapy, both intra- and postoperative, has in time allowed for an increase in indications for shoulder implant surgery in malignant tumors, thus drastically reducing the number of amputations. The use of prostheses, particularly those of the more recent generation, respond to the needs to overcome the limits of loss of movement, as long as good anatomical reconstruction of the soft tissues, the premise for good functional and cosmetic recovery, is also possible. The current tendency is that of using modular shoulder prostheses that provide a wide variety of sizes.

Epiphyseal chondroblastoma of bone. Long-term effects on skeletal growth and articular function in 15 cases treated surgically.

The authors describe the long-term sequelae of chondroblastoma in 15 patients with open growth plates, whose age at operation ranged from 8 to 15 years. At follow-up, the youngest patient was 21 and the oldest 48 years old. Upper limb length discrepancy ranging from 2 cm to 10 cm was present in the four patients who had a proximal humeral epiphyseal location; in three of them, the range of motion of the shoulder was also limited and X-rays showed marked irregularities of the humeral head.

The cementless PCA primary total hip system. Medium-term follow-up of 235 cases.

The Porous Coated total hip Arthroplasty (PCA), used by the authors since August 1984, represents a considerable advancement in the field of prosthetic replacement. Its original design and biological fixation give it long-lasting stability not only in young patients, but also patients with initial osteoporosis. Its use in cases of advanced osteoporosis, however, is more controversial.

Conversion of the arthrodesed hip to a total hip arthroplasty. Indications and limitations.

Arthrodesis of the hip is thought to achieve satisfactory clinical and functional results in the adult despite the loss of articular mobility involved (Santori et al., 1986; Russel, 1987; Weber, 1987). Over the long term, however, most patients develop secondary degenerative arthritis in the spine, contralateral hip, and knees due to overloading.