Gait assessment as a functional outcome measure in total knee arthroplasty: a cross-sectional study.

Background: The aim of the study was to assess gait in total knee arthroplasty (TKA) patients, using a technique that can to be used on a routine basis in a busy orthopaedic clinic.

Methods: A total of 103 subjects were recruited: 29 pre-op TKA patients; 17 TKA patients at 8 weeks post-op; 28 TKA patients at 52 weeks post-op; and 29 age-matched controls. Inertial measurement units (IMUs) were used to assess gait.

Custom rotating hinge total knee arthroplasty in patients with poliomyelitis affected limbs.

Purpose: Total knee arthroplasty (TKA) in limbs affected by poliomyelitis is a technically challenging procedure. These patients often demonstrate acquired articular and metaphyseal angular deformities, bone loss, narrowness of the intramedullary canals, impaired quadriceps strength, flexion contractures and ligamentous laxity producing painful hyperextension. Thus, using condylar knee designs in these patients will likely result in early failure because of instability and abnormal load distribution.

Delayed sciatic nerve palsy following resurfacing hip arthroplasty caused by metal debris.

The rapid rise in the incidence of failed metal-on-metal hip articulations in recent years has led to many patients requiring complex revision surgery. These failed metal prostheses may produce local metallic debris, which promotes both local and systemic adverse effects. We report an unusual case of failed metal-on-metal resurfacing hip arthroplasty presenting with ipsilateral buttock pain and foot drop 6 months after surgery.