The use of nerve root blocks is common in the management of radicular pain due to lumbar disc prolapse. However, most papers reporting their use do not necessarily specify the position or level at which the needle is positioned with respect to the level of pathology. We therefore set out to investigate this. We performed a survey of medical practitioners across the UK with an interest or involvement in the management of radicular pain secondary to lumbar disc prolapse The survey depicted the clinical scenario of a patient with radicular pain from an L4/5 disc prolapse and a number of questions were asked in relation to the use of nerve root blocks. Questionnaires were sent to 319 practitioners. We received 153 responses of which, 120 (37.6%) were sufficiently complete to be analysed. Of those who responded, 83% used a combination of local anaesthetic and steroids together with or without contrast. There were variations across the respondents in terms of the level injected with 22.5% injecting at the level of the L4/5 foramen, while 45% injected at the level of the L5/1 foramen. Differences were also noted when respondents were subgrouped according to their speciality. Of those who worked in pain management, 34.1% injected at the L4/5 foramen while 31.8% injected at the L5/1 foramen. For spine surgeons the respective figures were 20.5% and 43.2% and for radiologists 9.4% and 65.6%. In the treatment of radicular leg pain, there are apparent variations in the use and positioning of root blocks for a given level of disc pathology. This suggests that caution is necessary when considering the validity of published studies on the use of root blocks relative to an individual clinician's practice.
Only 0.8% of arthroplasties registered on the National Joint Registry in 2006 are patello-femoral. The Leicester patello-femoral replacement (Corin) has been in use for over 10 years with satisfactory initial results. The indication for use is isolated patello-femoral osteoarthritis with the theoretical benefits of bone preservation, maintenance of normal knee mechanics and easy revision. The implant was only available in one size and the femoral component was uncemented. We reviewed 49 patients managed with this prosthesis with a median follow up of 10 years (range 4-16). The mean age of the patients at time of surgery was 64. 62 arthroplasties were performed.51 were in females and 11 in males giving a 5:1 ratio. Thirteen patients had bilateral procedures. Thirty-nine revisions (62.9%) were performed for progressive tibio-femoral arthritis or prosthetic failure. Mean time to revision was 5 years 3 months. The knees were revised to total knee replacements without the need for stems, wedges or constraint. The unrevised knees had a mean survivorship of 8 years 6 months with a range of 4-14 years. The mean Oxford score for these surviving implants was 22.5. Results of other implants from the literature included the Avon prosthesis with 80% satisfaction rate at 5 years and the Lubinus with 45% satisfaction rate at 7.5 years. The Leicester device showed a pattern of progressive failure with up to 40% revision at 5 years. However those with surviving implants were reasonably happy as shown by the Oxford scores. We concluded that patello-femoral replacement has a role though this is not as well defined as TKR or even UKR. We posed the question as to whether these results were due to poor patient selection or design failings of the Leicester prosthesis. This prosthesis has been successful at reducing pain and improving function and may have been more successful with more sizes of implant, better instrumentation and more rigid patient selection.
Tuberculosis is a common disorder and may be increasing in prevalence. 83 cases of spinal involvement with TB occurred and of these 40 patients had a total of 61 interventional procedures. Indications for intervention were:
Progressive neurological deterioration Failure to respond to treatment Doubt about the diagnosis Progressive deformity.
Two patients were Caucasian with no predisposing factors and delays occurred in the initial diagnosis. Diabetes was a significant associated co-morbidity particularly in Asian patients. Multiple procedures were required usually for staged stabilisation after anterior decompression. 2 patients had four procedures, 2 had three procedures and 10 had two procedures 27 had a single procedure. Nine patients that underwent anterior decompression and strut grafting for neurological deterioration went on to have a second stage extra focal fixation and became ambulant. One death occurred from mesenteric infarction at 4 months post op in this group. Significant neurological recovery occurred after surgery in the neurologically impaired patients. Two revision procedures were required in the cervical spine for inadequate primary stabilisation.
Surgery when required is often a complex decompression and staged reconstruction
Demographics: The mechanism of injury was a road traffic accident in 80% and the mean ISS was 24.1. There were 95 patients (10.9%) with a cervical spine fracture, 96 (10.8%) with a fracture in either / both thoracic and lumbar regions. Spine clearance: Mean intubation (7.1 days), time to spine clearance (mean 0.4 days). In 318 patients, clearance was performed with the patient conscious (284 prior to intubation, 34 after intubation of <
24hrs). 42 patients (4.6%) died before spine clearance. In 10 patients, the protocol was not followed. Inclusions: 434 patients underwent CT. 10 of the 95 cervical fractures were deemed stable and underwent DS (n = 349). Missed Cases: CT missed 2 cases of instability, one of these (an atlanto-occipital dislocation) was also missed by DS. Critical analysis revealed a Powers ratio calculation would have diagnosed this injury on CT. Sensitivity (CT 97.7% vs DS 98.8%), specificity (100% CT and DS). There were no complications from either procedure.