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Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_30 | Pages 35 - 35
1 Aug 2013
Ker A Giebaly D Nunag P Press J
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Rivaroxaban has been recommended for routine use as a thromboprophylactic agent in patients undergoing lower-limb arthroplasty. Starting January 2011, our unit has converted from aspirin to Rivaroxaban use routinely following lower-limb arthroplasty for venous thromboembolism (VTE) prophylaxis. The aim of this audit was to retrospectively review its efficacy and the morbidity associated with its use.

All patients undergoing primary and revision lower-limb arthroplasty between February 2011 and July 2011 were reviewed. All patients undergoing total knee replacement surgery and total hip replacement surgery received oral rivaroxaban 10 mg daily post-operatively for 14 days and 35 days respectively. Outcome measures recorded were; investigation for DVT/PE, rate of DVT/PE, wound complications (infection, dehiscence, leaking, bleeding), blood transfusion rate and readmission rate within 6 weeks of surgery.

Of the 162 patients identified, 19 were excluded due to insufficient information or because they did not receive rivaroxaban as VTE prophylaxis. 141 patients (mean age 71.7 years) were included. 69 primary and 5 revision total knee replacements were performed. 60 primary and 7 revision total hip replacements were performed. 9 patients (6.4%) underwent Doppler USS for a painful swollen leg with 1 (0.7%) DVT diagnosed. None were investigated for a pulmonary embolus. 25 (17.7%) patients developed wound complications: 10 superficial infections requiring oral antibiotics, 2 deep infections requiring theatre washout, 1 wound dehiscence, 5 continuously leaking wounds, 5 bleeding wounds/haematomas. 26 (18.4%) patients required post-operative blood transfusion (average 2.2 units). 12 (8.5%) patients were re-admitted within 6 weeks with post-op complications (6 wound complications, 5 painful/swollen limbs, 1 large per-vaginal bleed).

In keeping with previous literature, the rate of VTE following lower-limb arthroplasty using rivaroxaban as prophylaxis is low. However, the rate of morbidity was higher when compared with the use of aspirin in our centre between April and September 2010.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_I | Pages 46 - 46
1 Jan 2011
Mukherjee P Press J Hockings M
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Background: It has been shown before that when compared with the medial para-patellar approach, the mid-vastus approach for TKR results in less post-operative pain for patients and more rapid recovery of straight leg raise. As far as we are aware the post-operative length of stay of the two groups of patients has not been compared. We postulated that the reduced pain and more rapid recovery of straight leg raise would translate into an earlier, safe, discharge home for the mid-vastus patients compared with those who underwent a traditional medial para-patellar approach.

Methods: Twenty patients operated on by each of five established knee arthroplasty surgeons were evaluated prospectively with regard to their pre and post-operative range of movement, time to achieve straight leg raise post-operatively and length of post-operative hospital stay. One of the surgeons performed the mid-vastus approach, and physiotherapists recorded the measurements.

Results: The results were analysed using a standard statistical software package, and although the mean length of stay was lower for the mid-vastus patients, the difference did not reach a level of significance (p= 0.13). The time taken to achieve straight leg raise post-operatively was significantly less in the mid-vastus group (p< 0.001).

Conclusion: Although this study confirms previous findings that the mid-vastus approach reduces the time taken for patients to achieve straight leg raise, when compared with the medial para-patellar approach, on its own it does not translate into a significantly shorter length of hospital stay.

In order to reduce the length of post-operative hospital stay with an accelerated rehabilitation program for TKR, a multi-disciplinary approach is required.