-Butyl and Trimethylsilyl Substituents in Nickel Allyl Complexes: Similar but Not the Same.

Metal complexes with -Bu-substituted allyl ligands are relatively rare, especially compared to their conceptually similar trimethylsilyl-substituted analogs. The scarcity partially stems from the few general synthetic entry points for the -Bu versions. This situation was studied through a modified synthesis for the allyl ligand itself and by forming several mono(allyl)nickel derivatives.

Malignant lymphoma of bone: a review of 119 patients.

Background: Lymphoma of bone is uncommon. As a result of this, many aspects of primary lymphoma of bone (PLB) are controversial: the definition, treatment strategies, response criteria, and prognostic factors.

Questions/purposes: We sought to determine the following in an analysis from a single center over a four-decade period: (1) 5-year disease-free survival of patients with PLB as well as those with systemic lymphoma with bone involvement; and (2) whether prognostic factors (sex, site of tumor, age) were associated with 5-year survival.

Intra-articular injection of hyaluronic acid is not superior to saline solution injection for ankle arthritis: a randomized, double-blind, placebo-controlled study.

Background: Intra-articular injections of hyaluronic acid are potentially useful to treat ankle osteoarthritis, yet their effectiveness has not been proven. Both single and multiple-dose treatments for ankle arthritis with use of various hyaluronic acid products have been recommended, but few high-quality studies have been published. The aim of this study was to compare the effectiveness of a single intra-articular injection of hyaluronic acid with a single intra-articular injection of normal saline solution (placebo) for osteoarthritis of the ankle.

Advance in the treatment of aneurysmal bone cyst of the sacrum.

Objective: The objective of this study was the review of 11 patients with two different treatment methods used historically for aneurysmal bone cyst in the sacrum. The outcome of both procedures is reported. In addition, the treatment technique of CT-guided percutaneous injections of demineralized bone matrix mixed with bone marrow concentrate is described.

Outcomes of suture button repair of the distal tibiofibular syndesmosis.

Background: Recently, a suture button device has been advocated as a simple and effective method of repairing the syndesmosis. Proponents of the device have cited earlier weightbearing and elimination of the need for device removal as potential advantages over metallic screws. However, the available reports generally have short followup.

Alloprosthetic composite is a suitable reconstruction after periacetabular tumor resection.

Background: Resection of a tumor of the pelvis is most disabling when the acetabulum is excised and a durable reconstruction of the defect is hard to achieve. All available methods are associated with frequent complications. Few large series have been published, and fewer have focused entirely on complete resections of the acetabulum.

Metastases to bones of the foot: a case series, review of the literature, and a systematic approach to diagnosis.

Metastatic lesions to the bones of the foot are rare but pose a challenge to the treating surgeon because of variation in presentation. Cases may present as a painful or swollen toe or as an infection resistant to antibiotics, or they may mimic inflammatory arthropathy. As such, diagnosis may be delayed.

Adult onset flatfoot associated with an intramuscular hemangioma of the posterior tibialis muscle.

A 30-year-old man was referred for a painful mass in the left calf and planovalgus deformity of the left foot. The pain had been present for 15 years but recently had become severe. On examination there was a visible, exquisitely tender mass in the medial distal aspect of the lower leg.

Approach to the management of soft tissue tumors of the foot and ankle.

To properly treat soft tissue tumors, the foot and ankle surgeon must start with an adequate fund of knowledge and follow a systematic approach. Some malignant soft tumors have a predilection for the foot and ankle, and they may mimic common musculoskeletal conditions, leading to a trap for the unwary clinician. This review will familiarize the practitioner with the common soft tissue tumors that occur in the foot and ankle along with their presentations.

Progressive ORF virus infection in a patient with lymphoma: successful treatment using imiquimod.

Orf virus is a parapoxvirus that infects small ruminants worldwide. We present the case report of a 73-year-old woman with non-Hodgkins lymphoma who developed progressive orf virus lesions that were unresponsive to surgical debridement and to cidofovir therapy. The patient's orf virus infection was successfully treated with topical imiquimod despite progression of her malignancy.

The use of cement in osteoarticular allografts for proximal humeral bone tumors.

In a proximal humerus resection for a bone tumor, the use of an osteoarticular allograft is considered the best restoration of shoulder function. We retrospectively reviewed the outcomes of 31 patients who had an intraarticular resection of the proximal humerus for a bone tumor. Twenty-three of the allografts were filled with cement.