Aim. Pelvic osteomyelitis following pressure ulceration results in substantial patient morbidity. Previous studies have reported a heterogenous approach to diagnosis and medical management by physicians, suggesting
Cementless stem fixation is a widely used method of stem revision in North America and elsewhere in the world. There is abundant literature in its support. Most of the reports from 1985 to 2005 related to proximally or extensively porocoated designs, the former falling into disfavor with time because of unpredictable outcomes. With few exceptions (e.g. S-ROM) the modularity of these designs was limited to the head/neck junction. But this generation of designs was associated with some issues such as insertional fractures, limited control of anteversion (and risk of dislocation), limited applicability in the setting of severe bone loss (Paprosky Type 4 osteolysis or Vancouver Type B3 periprosthetic fracture), as well as ongoing concern relating to severe proximal stress shielding. In the past decade we have seen the mounting use of a new design concept: tapered fluted titanium stems (TFTS), which incorporate the advantages of titanium (for less flexural rigidity), conical taper (for vertical taper-lock stability), longitudinal ribs or flutes (for rotational stability), and surface preparation which attracts bone ongrowth for long term fixation. Four consecutive reports from our center have documented the superiority of the TFTS in our hands, with encouraging outcomes even when dealing with severe bone loss or periprosthetic fractures. There is an increasing body of other literature which reports a similar experience. Furthermore, with increasing experience and confidence in this design concept, we now use a monoblock or non-modular design in the majority of cases in which a TFTS is indicated. This circumvents the potential drawbacks of stem modularity, including taper corrosion and taper junction fracture. Our recent report of this concept in 104 cases with a 2-year minimum follow-up supports the use of this concept in many if not most stem revisions. The question remains as to which should be favored? Because of
Early large treatment effects can arise in small studies, which lessen as more data accumulate. This study aimed to retrospectively examine whether early treatment effects occurred for two multicentre orthopaedic randomized controlled trials (RCTs) and explore biases related to this. Included RCTs were ProFHER (PROximal Fracture of the Humerus: Evaluation by Randomisation), a two-arm study of surgery versus non-surgical treatment for proximal humerus fractures, and UK FROST (United Kingdom Frozen Shoulder Trial), a three-arm study of two surgical and one non-surgical treatment for frozen shoulder. To determine whether early treatment effects were present, the primary outcome of Oxford Shoulder Score (OSS) was compared on forest plots for: the chief investigator’s (CI) site to the remaining sites, the first five sites opened to the other sites, and patients grouped in quintiles by randomization date. Potential for bias was assessed by comparing mean age and proportion of patients with indicators of poor outcome between included and excluded/non-consenting participants.Aims
Methods
High-quality randomised controlled trials (RCTs)
evaluating surgical therapies are fundamental to the delivery of
evidence-based orthopaedics. Orthopaedic clinical trials have unique
challenges; however, when these challenges are overcome, evidence
from trials can be definitive in its impact on surgical practice.
In this review, we highlight several issues that pose potential
challenges to orthopaedic investigators aiming to perform surgical randomised
controlled trials. We begin with a discussion on trial design issues,
including the ethics of sham surgery, the importance of sample size,
the need for patient-important outcomes, and overcoming expertise
bias. We then explore features surrounding the execution of surgical
randomised trials, including ethics review boards, the importance
of organisational frameworks, and obtaining adequate funding. Cite this article:
Periprosthetic joint infection (PJI) complicates
between 0.5% and 1.2% primary total hip arthroplasties (THAs) and
may have devastating consequences. The traditional assessment of
patients suffering from PJI has involved the serological study of
inflammatory markers and microbiological analysis of samples obtained
from the joint space. Treatment has involved debridement and revision
arthroplasty performed in either one or two stages. We present an update on the burden of PJI, strategies for its
diagnosis and treatment, the challenge of resistant organisms and
the need for definitive evidence to guide the treatment of PJI after
THA. Cite this article:
The aim of this study was to review the role
of clinical trial networks in orthopaedic surgery. A total of two
electronic databases (MEDLINE and EMBASE) were searched from inception
to September 2013 with no language restrictions. Articles related
to randomised controlled trials (RCTs), research networks and orthopaedic
research, were identified and reviewed. The usefulness of trainee-led
research collaborations is reported and our knowledge of current
clinical trial infrastructure further supplements the review. Searching
yielded 818 titles and abstracts, of which 12 were suitable for
this review. Results are summarised and presented narratively under
the following headings: 1) identifying clinically relevant research
questions; 2) education and training; 3) conduct of multicentre
RCTs and 4) dissemination and adoption of trial results. This review
confirms growing international awareness of the important role research
networks play in supporting trials in orthopaedic surgery. Multidisciplinary
collaboration and adequate investment in trial infrastructure are crucial
for successful delivery of RCTs. Cite this article: