830 Audit of Readmissions Within 30 Days of Total Knee Replacement (TKR)

Background

Total knee replacement (TKR) is a very successful operation but like all surgery carries risks. Patients can be readmitted, but not all necessarily linked to post-operative complications. National Joint Registry for England, Wales, Northern Ireland, and the Isle of Man: 17th annual report, 2020, Prosthetic infection after total knee replacement is (TKR) of average 0.92%.

Aim

To identify causes of readmission after TKR & their frequency, within 30 days of surgery.

Method

Data spanning 2 years (Apr 2018- Apr 2020) were analysed. Patients’ details were retrieved for those with at least one readmission within 30 days of TKR and details include:

Results

Conclusion

PROMs in total knee replacement: analysis of negative outcomes

INTRODUCTION

NHS England uses the Oxford Knee Score (OKS) as part of patient-reported outcome measures (PROMs) to evaluate 'health gains' following total knee replacement. Policy makers use this to guide healthcare funding and resource allocation. Our study aims to undertake a qualitative and quantitative analysis of OKS among patients who experienced a negative outcome after a total knee replacement at our centre.

MATERIALS AND METHODS

Between April 2017-March 2018, 19 of 189 (10%) patients had a worsened OKS at our centre. We retrospectively and prospectively reviewed 14 of these patients. Structured telephone interviews with a repeat OKS were carried out in September 2019 (18-29 months post-operation).

RESULTS

Eight patients were female and the total age range was 57-95, mean average 75.6 (SD 9.9 years). Of 48 (higher scores meaning better outcomes), the average preoperative OKS was 24.2 and the average postoperative OKS at 6 months was 19.4 (decrease of 20%). The average postoperative OKS at 18-29 months was 35.6 (an increase of 83.5% from 6 months).

DISCUSSION

The OKS was developed and validated over 20 years ago in Oxford. In our study, four patients asked for clarification of questions 4, 6 and 10 owing to ambiguous language. All 14 patients who had negative OKS outcomes had positive outcomes when retested after 18 months, depicting 'health gains' not conveyed in PROMs analysis.

CONCLUSION

The OKS needs to be revalidated on current patient groups for accurate and reliable data. Further prospective studies should be undertaken on larger cohorts to understand the recovery course and whether PROMs should be carried out later.

Use of a double rhomboid transposition flap in the treatment of extensive complex pilonidal sinus disease

OBJECTIVE

Rhomboid transposition flaps are safe and successful in treating recurrent, complex pilonidal disease. There are little data on treatment of very large (> 12 cm) pilonidal sinuses. We describe a new technique using two simultaneous rhomboid flaps to achieve primary closure following extensive wide-excision.

METHOD

With antibiotic prophylaxis, the sinus is excised en-bloc as a parallelogram (two adjacent rhomboids). Two rhomboid fasciocutaneous flaps are transposed to close this defect over suction-drains. Sutures are removed after 14 days.

RESULTS

Eight patients (seven males) were treated with this technique (median age 26 years; range 22-35 years). All had very extensive and recurrent disease, having had multiple previous procedures. Median drain-duration was 2 days (range 1-5 days) and postoperative stay was 2 days (range 0-5 days). One complication arose: a wound infection with partial dehiscence which healed with conservative treatment. No recurrence or further complication arose in a 33-month follow-up (range 8-41 months).

CONCLUSION

This is the first description of the use of two simultaneous rhomboid flaps for very large recurrent pilonidal disease. It is a relatively simple and safe alternative to major plastic reconstruction which is often resorted to in such large-scale disease.