Acetabular dysplasia is typically characterised by insufficient antero-superior femoral head coverage. It is postulated (yet unproven) that patients with dysplasia compensate by reducing pelvic tilt (anterior pelvic rotation), effectively retroverting their acetabulum to improve antero-superior cover. We aimed to 1) define pelvic tilt (PT) in patients with bilateral and unilateral dysplasia, and 2) quantify PT changes following a successful periacetabular osteotomy (PAO). We retrospectively reviewed 16 patients (14 females) who underwent successful, bilateral, staged, PAOs (32 PAOs). These cases were matched for age and gender with 32 unilaterally dysplastic hips that underwent successful PAO for a similar degree of acetabular dysplasia as per pre-operative imaging. Supine and AP radiographs pre-PAO and at latest follow-up were used to measure centre-edge-angle (CEA) and Tönnis-angle (TA). PT was measured using two validated methods (Sacro-Femoral-Pubic (SFP) angle and Pubic-Symphysis to Sacro-Iliac (PS-SI) Index with excellent correlation (ρ=0.8, p<0.001).Introduction
Patients/Materials and Methods
To describe the incidence, nature, and risk factors associated with upper limb injuries in athletes participating in the London 2012 Paralympic Games. This study formed a component of the large prospective cohort study conducted over the 14-day period of the London 2012 Paralympic Games, coordinated through the IPC Medical Committee. Daily injury data were collected by team physicians in 3 329 athletes (46 606 athlete days) participating in the study, and 258 upper limb injuries were recorded. The incidence proportion (IP=number of injuries per 100 athletes), and incidence (number of injuries per 1000 athlete days) of upper limb injuries was calculated.Purpose of the study:
Materials and methods:
We aim to determine the amputation rate and identify predictors of outcome in patients with tibial fractures and associated popliteal artery injuries at a level 1 trauma unit draining a large geographical region. All patients with popliteal artery injuries and tibial fractures treated at a level 1 trauma unit between 1999 and 2010 were assessed retrospectively regarding amputation rates and prognostic factors and tested for significance with a Z-test of proportions.Purpose
Material and methods
