Acetabular Prosthetic Protrusio after Bipolar Hemi-Arthroplasty of the Hip: Case Report and Review of the literature.

Introduction: Bipolar hemi-arthroplasty of the hip is a commonly performed procedure in elderly patients with intra-capsular fracture of the neck of the femur with good short-term results for pain relief, return to activity and morbidity. The incidence of intra-pelvic prosthesis migration or protrusion is rare and one of the inciting factors is chronic low-grade sepsis. Acetabular prosthesis protrusion poses a difficult and challenging surgical problem due to surrounding neurovascular structures.

Minimally Invasive Computer-Assisted Total Knee Arthroplasty Compared With Conventional Total Knee Arthroplasty: A Prospective 9-Year Follow-Up.

Background: Studies on minimally invasive computer-assisted total knee arthroplasty (MICA-TKA) have shown promising results, but are limited by short follow-up. The purpose of this study was to compare the midterm radiographic features and functional outcomes between patients who underwent MICA-TKA and conventional TKA.

Methods: A total of 108 patients who were randomized to undergo MICA-TKA or conventional TKA during 2004 and 2005 were contacted for a prospective follow-up review.

Necrotizing Fasciitis Caused by Cryptococcus gattii.

Necrotizing fasciitis (NF) is a severe soft-tissue infection that can lead to high morbidity and mortality. The etiology of NF is often polymicrobial. Although rare, fungal organisms have been known to cause NF.

Multiple locations of nerve compression: an unusual cause of persistent lower limb paresthesia.

A paucity of appreciation exists that the "double crush" phenomenon can account for persistent leg symptoms even after spinal neural decompression surgery. We present an unusual case of multiple locations of nerve compression causing persistent lower limb paresthesia in a 40-year old male patient. The patient's lower limb paresthesia was persistent after an initial spinal surgery to treat spinal lateral recess stenosis thought to be responsible for the symptoms.

Minimally invasive compared with open lumbar laminotomy: no functional benefits at 6 or 24 months after surgery.

Background Context: Comparative studies between open and minimally invasive surgical (MIS) approaches for the treatment of spinal stenosis have mainly investigated immediate postoperative parameters.

Purpose: We aimed to compare the postoperative improvements in functional and pain scores between open versus MIS lumbar laminotomy and to describe the complications of each method.

Study Design/setting: We conducted as retrospective review of prospectively collected data.

Unconstrained arthroplasty in type II valgus knees: posterior stabilized or cruciate retaining?

Purpose: Type II valgus knees are defined by medial collateral ligament laxity. This paper studies the results of posterior stabilized (PS) and cruciate retaining (CR) knee implants in type II valgus knees.

Methods: From 1999 to 2009, there were 100 type II valgus knees in 95 patients eligible for study (63 PS, 37 CR).

Positive ProbeTec tests in fresh specimens from malignant musculoskeletal tumors: a case series.

Objective: To report a case series of patients with high-grade musculoskeletal sarcomas whose biopsies of fresh specimens yielded positive Becton Dickinson ProbeTec tests, in addition to confirming diagnoses of high-grade sarcomas.

Methods: Fresh biopsies of high-grade musculoskeletal sarcomas were subjected to ProbeTec tests.

Results: The biopsies of three Chinese patients aged 65, 49 and 78 years with high-grade musculoskeletal sarcomas had positive Becton Dickinson ProbeTec tests.