Systemic Absorption of Gentamicin Irrigation in Joint Replacement Surgery: A cause of concern

Gentamicin, whether administered either intravenously, incorporated into bone cement or for local intra-operative irrigation, is a commonly used antibiotic in orthopaedic practice. The former two have been well studied, however the literature on the therapeutic efficacy and safety of gentamicin irrigation is sparse. The objective of this study was to assess systemic absorption of gentamicin irrigation in joint replacement surgery. This was a non-randomised, prospective study. Ninety-eight patients (group A) who underwent total joint replacement and 40 patients (group B) who underwent hemi-arthroplasty were treated intraoperatively with gentamicin irrigation. Serum gentamicin levels were assayed at 4 hours and 24 hours post-surgery. Sixteen of 98 patients in group A (16%) and 12 out of 40 patients in group B (30%) were found to have serum gentamicin level above 2mcg/ml at 4 hours post-surgery. We conclude that intra-articular gentamicin irrigation is systemically absorbed at substantial levels.

Conservative Management of Calcaneal Fractures. A Retrospective Review of Treatment Outcome

Int roduction: Treatment of calcaneal fracture is still controversial and indication for surgery is not well established. We are reporting the mid term outcome of calcanel fractures treated conservatively. Material and Methods: Patients admitted with calcaneal fractures from 1st November 2002 till 31st December 2004 and were treated conservatively were included in this study. The fractures were grouped according to Essex-Lopresti classification and their outcomes were assessed with the Maryland foot score. We also looked at time to weight bearing and returning to occupational activity. Results: Forty-four patients were included for evaluation. Patients with extraarticular calcaneal fractures had significantly higher rating scores compared to those with intraarticular fractures (98.2 and 88.8 respectively, with a p value = 0.0001). Generally, both group of patients had a good clinical outcome. 18 of the 44 patients (41%) started partial weight bearing before or at 6 weeks and 31 patients (72%) were able to start full weight bearing by 12 weeks. 31 patients (72%) were back to work 12 weeks after the injury. Conclusion: Conservative management for calcaneal fractures is an acceptable mode of treatment with satisfactory functional outcome.

Unlocked Nailing vs. Interlocking Nailing for Winquist Type I and II Femoral Isthmus Fractures. Is there a Difference?

Interlocking intramedullary nailing is suitable for comminuted femoral isthmus fractures, but for noncomminuted fractures its benefit over unlocked nailing is debatable. This study was undertaken to compare outcomes of interlocking nailing versus unlocked intramedullary nailing in such fractures. Ninety-three cases of noncomminuted femoral isthmus fractures (Winquist I and II) treated with interlocking nailing and unlocked nailing from 1 June 2004 to 1 June 2005 were reviewed; radiological and clinical union rates, bony alignment, complication and knee function were investigated. There was no statistical significant difference with regard to union rate, implant failure, infection and fracture alignment in both study groups. Open fixation with unlocked femoral nailing is technically less demanding and requires less operating time; additionally, there is no exposure to radiation and cost of the implant is cheaper. We therefore conclude that unlocked nailing is still useful for the management of non-comminuted isthmus fractures of the femur.