Leg length discrepancy (LLD) can adversely affect functional outcome and patient satisfaction after total hip arthroplasty. We describe a novel intraoperative technique for femoral component insertion.

We aimed to determine if this technique resulted in the desired femoral placement, as templated, and if this was associated with a reduced LLD.

A series of fifty consecutive primary total hip replacements were studied. Preoperative digital templating was performed on standardised PA radiographs of the hips by the senior surgeon. The preoperative LLD was calculated and the distance from the superior tip of the greater trochanter to the predicted shoulder of the stem was calculated (GT-S). Intraoperatively, this length was marked on the rasp handle and the stem inserted to the predetermined level by the surgeon. This level corresponded to the tip of the greater trochanter and formed a continuous line to the mark on the rasp handle. Three independent blinded observers measured the GT-S on the postoperative radiographs. We assessed the relationship between the senior author's GT-S (preoperative) and the observers' GT-S (postoperative) using a Person correlation. The observers also measured the preoperative and postoperative LLD, and the inter-observer variability was calculated as the intra-class correlation coefficient.

There was a strong correlation of preoperative and postoperative GT-S (R=0.87), suggesting that the stem was inserted as planned. The mean preoperative and postoperative LLD were −4.3 mm (−21.4–4) and −0.9 mm (−9.8–8.6), respectively (p<0.001).

This technique consistently minimised LLD in this series. This technique is quick, non-invasive and does not require supplementary equipment.

Deep infection represents one of the most devastating complications of total knee arthroplasty. Commonly implicated organisms are gram positive bacteria such as staphylococcus aureus, staphylococcus epidermidis and group B streptococcus. Occasionally, infection may be caused by rare organisms, particularly in the immunocompromised host.

We present a case of infected total knee arthroplasty in a penicillin allergic patient, caused by Pasteurella multocida, 13 weeks after the initial surgery. This was treated by open debridement and change of insert as well as aggressive antibiotic therapy. The patient admitted contact with a cat and three dogs at home.

Pasteurella multocida is a facultatively anaerobic gram negative coccobacillus. It is a commensal in the nasopharygeal tract of domestic pets such as cats and dogs. Human infection can often be attributed to a bite or scratch. Prosthetic joint infection caused by Pasteurella is uncommon. Only a few cases have been reported in the literature.

Our case has several learning points: (1) It is very important to definitively identify Pasteurella because standard therapy for prosthetic joint infection (e.g. flucloxacillin or vancomycin) is not optimal for this species.(2) Pasteurella are susceptible to penicillin, but the optimal antibiotic therapy for infections in patients allergic to beta lactam antibiotics is uncertain. A combination of ciprofloxacin and linezolid is recommended. (3) There is no consensus regarding appropriate management. There are reports of washout and antibiotic therapy alone, single and two stage revision procedures. In our case, at five months follow up, open debridement and change of insert along with antibiotic treatment appears to have been effective, although more long term follow up is required. (4)Post arthroplasty, all patients with pets at home should be advised to seek medical attention following any bite or scratch so that timely prophylaxis can be administered before sepsis becomes deep-seated.

Reconstruction of severe acetabular defects during revision hip arthroplasty presents a significant surgical challenge. Such defects are associated with significant loss of host bone stock, which must be addressed in order to achieve stable implant fixation. A number of imaging techniques including CT scanning with 3D image reconstruction are available to assist the surgeon in the pre-operative planning of such procedures.

We describe the use of a novel technique to assist the pre-operative planning of severe acetabular defects during revision hip arthroplasty.

Patient and Methods – We present the use of this technique in the case of a 78 year old patient who presented 20 years from index procedure with severe hip pain and inability to weight bear due aseptic loosening of a previously revised total hip arthroplasty. A Paprosky 3B defect was noted with intra-pelvic migration of the acetabular component. Pre-operative investigations included: inflammatory markers, pelvic CT scan with 3D reconstruction, pelvic angiography and hip aspiration.

Using DICOM images obtained from the CT scan, we used free open source software to carry out a 3D surface render of the bony pelvis. This was processed and converted to a suitable format for 3D printing. Using selective laser sintering, a physical 3D model of the pelvis, acetabular component and proximal femur were produced. Using this model the surgeon was able to gain an accurate representation of both the position of the intra-pelvic cup and more accurately assess the loss of bone stock. This novel technique is particularly useful in the pre-operative planning of such complex acetabular defects in order to determine if/which reconstruction technique is most likely to be successful.

3D printing is a relatively recent technology, which has numerous potential clinical applications. This is the first reported case of this technology being used to assess acetabular defects during revision hip arthroplasty. The use of this technology gives the surgeon a 3D model of the pelvis, quickly (7 days from CT) and at a tenth of the cost (£280) of producing such a model through the traditional commercial routes. The model allowed the surgeon to size potential implant, quantify the amount of bone graft required (if applicable) and to more accurately classify the loss of acetabular bone stock.

Introduction

The aim of this study was to compare the results and length of stay of patients of early (within 12 hours) versus conventional (after 48 hours) ankle fixation our hospital.

Spinal pathologies requiring spinal/neurospinal unit’s input/opinion from tertiary centres for their management are initially admitted to DGHs. The referral is made by mailing radiographs with clinical details to the on-call registrar who gets back with a management plan. This arrangement is fraught with delays at various levels having an impact on patient care, financial and medico-legal implications. We discuss these issues between index DGH (Poole General Hospital) and its tertiary referral centres.

To review the existing management of spinal injury admissions at our hospital, analyse critical/adverse incidents and to identify areas for improving patient care.

A comprehensive retrospective review of all spinal admissions/referrals made to tertiary centres over 6 months was undertaken. Twenty eight of the 64 admissions warranted referrals. A structured proforma was used to document the time of admission, time of booking and performing scans, time of referral & response from tertiary centre and time of transfer from hospital notes and delays at each level were critically analysed.

Seven of the 28 referrals had either neurodeficit or spinal instability. Common issues were delay in obtaining CT/MRI scans (av 2.5 days), delay due to reporting/failing to act on results (av 1.8 days), delays due to missing/lost in transit’ scans (av 1.5 day), delay in obtaining opinion (av 4 days) and non-availability of bed for transfer (av 5.5 days). There was 1 mortality and 5 other complications while awaiting transfer. The financial costs incurred were approximately £73,000 & loss of 246 patient-days.

Training on induction day, implementation of spinal care pathway and diligent documentation/communication coupled with succinct referral were strictly enforced following this study. The website www.neurorefer.co.uk was set up by Wessex neurological centre to streamline referrals and enhance efficiency. This website has now grown into a national secure referral portal incorporating other referral centres.

Purpose: To determine the level of promotion of minimally invasive surgery (MIS) & computer assisted orthopaedic surgery (CAOS) in total knee replacement (TKR) through internet sites by BASK members.

Methods: We obtained an updated list of active members of BASK in March 2007 and permission from the executive committee to undertake this study. Standard search engines commonly used in our daily lives (viz. Google, Yahoo and Ask.com) were used to search for websites related to each surgeon during Sep–Nov 2007 period. The surgeon’s name, initials and job title thereof were used as keywords in conducting the search. Thus for each surgeon, all websites found were browsed and evaluated for MIS/CAOS and TKR/UKR information. Both direct (surgeon’s personal website/private practice) and indirect (group practice/hospital/university affiliation) information from these websites were reviewed and a standard pre-formed questionnaire proforma was filled in against that particular surgeon.

Results: A total of 178 websites were found for 405 members (392 inland + 13 overseas). 2.8% and 4.5% made direct and indirect reference to MIS TKR respectively. The most commonly listed benefits of MIS were quicker recovery, smaller incision and hence lesser pain. Very few specific risks of MIS were outlined by these websites. None of the websites quoted any peer-reviewed publication to support their claims. CAOS was discussed in 1.7% and 2.8% of these sites respectively.

Conclusion: Our study suggests that many active members do not have personal websites and these procedures are not commonly promoted by them via the internet. Many of these are often associated indirectly with group practice/institutional affiliation websites which may not necessarily be endorsed the surgeon. Our plan in near future is to monitor the changes in internet dissemination of information and close the audit loop by next year.

Introduction: Spinal pathologies requiring spinal/neurospinal unit’s input/opinion from tertiary centers for their management are initially admitted to DGHs. The referral is usually done by mailing patient’s x-rays/scans with clinical details to the on-call registrar who gets back with a management plan. This arrangement is fraught with delays at various levels having an impact on patient care, mortality & morbidity, financial and medicolegal implications. We discuss these issues between index DGH (Poole Gen Hosp, Dorset) and its tertiary referral centers (Southampton/Reading/Bristol/Oxford/Stanmore).

Objectives: To review the existing management of spinal injury admissions at Poole DGH, analyse critical/ adverse incidents and efforts aimed at minimising them, to identify areas for improving patient care & safety and to draft a regional management protocol/care pathway for spinal admissions.

Methods: A comprehensive retrospective review of all spinal admissions/referrals made to tertiary centers over 6 months (Jan–June 05) was undertaken. 28 of the 64 admissions warranted referrals. A structured proforma was used to document the time of admission, time of formulating clinical diagnosis, time of booking scans, time of performing scans, time of referral to tertiary centre, time of response from tertiary centre and time of transfer were retrieved from case notes and reasons for delay (if any) at each level were critically analysed.

Results: 7 of the 28 referrals had either neurodeficit or spinal instability. Common reasons for delay were delay in obtaining CT/MRI scans (av 2.5 days), delay due to reporting/failing to act on scan results (av 1 day), delays due to missing/‘lost in transit’ scans (av 1.5 day), delay in obtaining opinion from tertiary centre (av 4 days) and non-availability of bed for transfer (av 5.5 days). There was 1 mortality and 5 other complications while awaiting transfer. The financial costs incurred were appx £73,000 & loss of 246 patient-days.

Discussion: Training of junior doctors at induction, implementation of spinal care pathway and diligent documentation/communication coupled with succinct referral to the tertiary centre were strictly enforced following this study. The website www.neurorefer.co.uk was set up by Wessex neurological centre, Southampton to streamline referrals, circumvent lost in transit scans and enhance efficiency which has now grown into a national secure referral portal incorporating other referral centers.