Purpose: Whiplash injury occurs due to motor vehicle accidents has its long term consequence, nevertheless very little is written about its long-term follow up. The aim of the study is to find out the long-term follow up of Whiplash injury and the factors affecting the long-term follow up

Method: It is a retrospective study which was done in Russells Hall Hospital in the west midland in UK. 64 patients were selected in this study. Only 54 patients were replied. An inclusion criterion was Whiplash injury due to RTA in years 1995, 1996 and 1997. Initial examination was performed 5.6 +/ – 4.5 days after trauma, and follow-up examinations 3, 6, 12, and 24 months. Exclusion criteria were any cervical spine bony injury, associate head injury and poly-trauma patients. The outcome measures used for assessment are SF36, Whiplash Disability Questionnaire score WDQS, and questions to cover their present symptoms, work circumstances before and after the injury, current and previous treatment

Results: In our study we found that the time it takes for the patient’s symptoms to resolve varies, it took less than 6 weeks in 4 patients, between 6 weeks to 3 months in 10 patients, between 6 months to 1 year in 15 patients and more than one year in 3 patients. The average follow up time was 10.3 years. Our results did show these figures: 22 patients were still symptomatic 10 years after injury, 18 still complaining of pins & needles, 13 still having frontal headache and 7 having occipital headache. Headache was one of the symptoms which annoyed Whiplash injury patients. Headaches following Whiplash injuries were occipital, frontal or generalised. Headache was usually of Muscular contraction type, often associated with greater occipital neuralgia. 16 patients still had treatment in the form of pain killers or physiotherapy. The mean WDQS was less than 20 in 38 patients. The mean WDQS in patients with low back pain was 29.23 and for those without back pain were 12.53. In the smokers the mean whiplash score was 32.2. In the non-smokers the Whiplash score was 17.93. The mean WDQS in those who do not drink alcohol was 26.73 and in those who drink alcohol were 16.58.

Conclusion: Whiplash injury patients have long term residual symptoms mainly pins & needles as well as headache and dizziness. Claiming compensation is a bad prognostic factor on the long-term outcome of Whiplash injury patients. Drinking alcohol, Gender, BMI, treatment given after the initial injury and smoking have no effect on the long-term outcome of these injuries. Age & Low back pains are bad prognostic factors. Whiplash Disability Questionnaire score, SF 36 (for body pain) and time for symptoms to be relieved are sensitive outcome measures to assess those injuries.

To maximise the long-term survivorship of any hip prosthesis it is important to recreate joint centre. Normal joint centre is determined by horizontal offset and vertical height of the acetabular and femoral components. In this study joint centre and horizontal offset were analysed in 200 consecutive patients operated on from October 1998 in whom the opposite hip was normal. Joint centre was defined relative to the acetabulum and femur both pre- and post-operatively. On the acetabular side a horizontal line was drawn across the pelvis immediately below each teardrop. A vertical line was drawn at right angles through the middle of each teardrop. Acetabular offset was defined as the horizontal distance from the vertical trans teardrop line to head centre. For femoral offset a screened x-ray was taken to show maximum offset. The anatomical axis was drawn and the offset was defined as the distance from the anatomical axis to head centre.

Our results show on the acetabular side there was an overall tendency to leave the joint centre medial and so decrease acetabular offset. However, we found that 90% of our sockets were placed within 6 mm of normal joint centre. We attribute this accuracy to the principle of visualising the transverse acetabular ligament intra-operatively and using this landmark to control depth of socket insertion. Conversely, on the femoral side there was a slight tendency to increase the offset. Nevertheless, 98% of the custom stems were within 10mm of normal joint centre. When we looked at total horizontal offset i.e. the combination of femoral and acetabular offset we found that joint centre had been restored to within 10mm in 93% of cases.

This study confirms the effectiveness of the custom femoral stem and Duraloc socket in restoring joint centre.

Introduction: Since 1992 over 3000 custom-made cemented titanium femoral components have been implanted during total hip replacement in our centre.

Stems are machined using CAD-CAM. Measurements are made from screened AP and lateral x-rays of known magnification. Normal joint centre is recreated by controlling offset and vertical height of the femoral component.

Method: Joint centre and limb length were analysed radiologically in consecutive 100 patients following total hip replacement for unilateral arthritis. Joint centre was defined relative to the pelvis and femur.

The anatomical axis and offset of the femur were defined using a screened x-ray of known magnification taken to show maximum offset. Femoral centre height was defined relative to the greater trochanter.

Results: In general, acetabular joint centre was placed medial and high, tending to reduce limb length slightly. Conversely, on the femoral side the tendency was to leave the component proud, producing an increase in limb length. Most patients had limb length restored to within 6mm of normal.

This study confirms the effectiveness of the Belfast Custom Stem in restoring joint centre and limb length.