The most challenging aspect in rotational deformity correction is translating the pre-operative plan to an accurate intra-operative correction. Landmarks away from the osteotomy site are typically employed at pre-operative planning and this can render inadequate correction. Our proposed technique of pre-operative planning using CT scan and leg length radiographs can translate to accurate intra-operative correction. A circle was superimposed at osteotomy site with its centre serving as the centre of correction of rotation. Medio-lateral distance at osteotomy site measured and used as diameter of the circle. Circumference of the circle was calculated by multiplying diameter with Pi and used in the below formula to obtain accurate de-rotation distance; Derotation distance = (Circumference/360) × correction value for desired ante-version The exact site of osteotomy was measured in theatre under C-arm and exposed. Derotation distance was marked on the surface of bone as point A and point B with a flexible ruler. Osteotomy performed with saw and derotation was done till point A and point B were co-linear. Derotation distance obtained using this technique is specific for the site of chosen osteotomy and implies a specific degree of correction for every millimeter derotated. Distal femur was the chosen site of osteotomy if there was associated patellar instability and proximal femur if there was no patellar instabilityIntroduction
Materials and Methods
Circular frames in the lower limbs have been removed by Specialist nurses in our clinics for the past 20 years using Entonox. This standard of care has helped reduce the burden of health care cost by avoiding removal of frames in theatres. We have recently started using Penthrox and present our encouraging initial data suggestive of superior efficacy when compared to Entonox. We included in this study the last ten patients on whom Entonox was used during frame removal and the first ten patients on whom Penthrox was used. Visual analogue pain scale was used to quantify pain at the beginning, middle and at the end of frame removal in both groups. The data was found to be normally distributed and Unpaired T test was used to analyse it. Confidence interval of 95% and p-value 0.05 deemed significant.Introduction
Materials and Methods
The use of tourniquet in lower limb orthopaedic surgery is well established, however, it does have associated risks and complications and its use has been previously questioned. The purpose of this study was to compare postoperative pain scores, analgesic requirements and time to discharge in patients undergoing tourniquet assisted and non-tourniquet assisted routine knee arthroscopy. A total of 40 patients were randomised to tourniquet assisted and non-tourniquet assisted groups. Arthroscopy was performed using a standardised local anaesthetic infiltration in the non-tourniquet assisted group. All patients completed a postoperative pain score. Findings demonstrated that the incidence and mean scores for postoperative pain were significantly lower in the non-tourniquet group. Additionally postoperative analgesic requirements of patients in the non-tourniquet group were also found to be significantly lower and time spent in recovery and on the ward postoperatively was also lower in the non-tourniquet group compared to the tourniquet group. On the basis of the results in our study we recommend abolishing the use of tourniquet in routine knee arthroscopies in the virgin knee.
