Aims

Management of intra-articular calcaneal fractures remains a debated topic in orthopaedics, with operative fixation often held in reserve due to concerns regarding perioperative morbidity and potential complications. The purpose of this study was to identify the characteristics of patients who developed surgical complications to inform the future stratification of patients best suited to operative treatment for intra-articular calcaneal fractures and those in whom surgery was highly likely to produce an equivocal functional outcome with potential post-operative complications.

A statement of the purposes of the study and background

Lower back pain (LBP) is one of the ten leading causes of disease burden globally, producing significant detrimental effects on physical and emotional wellbeing whilst having a substantial economic burden for society. There is an inverse relationship between socio-economic status and pain prevalence. The effectiveness of a locally run ‘Back to Fitness Programme’ (6-week education and exercise programme) in the most deprived local authority area in England was evaluated.

Outpatient total hip arthroplasty (THA) has remained controversial and challenging. Traditional hospital stays following total joint arthroplasty were substantial and resulted in increased rates of morbidity, significant pain, and severe restriction in mobility. Advancements in the surgical approach, anesthetic regimens, and the initiation of rapid rehabilitation protocols have had an impact on the length of recovery following elective THA. Still, very few studies have specifically outlined outpatient hip arthroplasty and, thus far, none have addressed the use of robotic-arm navigation in outpatient THA. This article describes in detail the technique used to perform outpatient THA with the use of robotic-arm assistance. We believe that outpatient THA using robotic-arm assistance in combination with tissue-preserving surgery, multi-modal pain and nausea management, early rehabilitation, and stringent patient selection yields a suitable alternative to inpatient joint replacement.

This retrospective study evaluated 69 Swanson trapezium replacements performed between 1990 and 2009 for trapeziometacarpal osteoarthritis in 58 patients. Pain and function were assessed using the Michigan Hand Questionnaire (MHQ) and the Disability of the Arm, Shoulder and Hand (DASH) questionnaire. Patients had a mean age of 62 years at the time of surgery, with a mean time of 7.7 years from time of surgery to completion of the follow-up interview. The results showed good relief of pain and function with no significant deterioration with time from surgery. There were no gender differences or differences by age. The only differences observed were that those patients following surgery on a dominant hand indicated higher activities of daily living and work related activities. The authors conclude silicone trapezium replacement remains a good option for patients with painful trapeziometacarpal osteoarthritis that has not responded to non-operative treatment.

Hypothesis

Athletes significantly alter their lumbar spinal motion when performing squat lifting at heavy weights. This altered motion effects a change in pressure in the posterior annulus of lumbar discs.

Hip fractures are a significant cause of mortality and morbidity in the elderly. Malnutrition is a major element of this but no consensus exists as to the detection or management of this condition. Reported incidence in elderly hip fracture patients varies widely between 9.0% and 88.6%.

The aim of this study was to evaluate the nutritional status of 415 patients with operatively managed hip fractures and determine the prognostic relevance of admission serum albumin and total lymphocyte count (TLC) assays. Protein-energy malnutrition (PEM) was defined as serum albumin < 3.5g/dl and a TLC < 1,500 cells/mm3. Delay to operation, duration of in-patient stay, re-admission (< 3 months) and in-patient, 3- and 12-month mortality were assessed as outcome variables.

Survival data was available for 377 patients at 12 months. Of 377 patients, 53% (n=200) had both a serum albumin and TLC levels taken at admission, while 47% (n=177) had not. The incidence of PEM was 51%. Inhospital mortality for PEM patients was 9.8%, compared with 0% for patients with normal values of both laboratory parameters. Older patients were more likely to have lower albumin (p=0.017) and TLC (p=0.023). Nursing home patients were also more likely to have lower albumin (p=0.033). Multivariate analysis revealed a significant difference in 12-month mortality, with patients who had both a low albumin and a low TLC 4.6 times (95% CI: 1.0–21.3) more likely to die within 12 months postoperatively than patients who had normal values of both laboratory parameters. This was significant after adjusting for age, gender and domicile (p=0.049).

Serum albumin and TLC in combination are accurate predictors of 12-month mortality in hip fracture patients. These results highlight the relevance of assessing the nutritional status of patients with hip fractures at the time of admission and emphasises the relationship between nutrition and outcome.

Background: Protein energy malnutrition (PEM) is an accepted predictor of poor outcome in hip fracture patients. There is no universally accepted definition of PEM. Admission screening for PEM is not routinely performed for hip fracture patients. The reported incidence in elderly hip fracture patients varies widely between 9.0% and 88.6%.

Aims: To determine the prognostic relevance of admission serum albumin and total lymphocyte count (TLC), as clinical markers of PEM and predictors of outcome for hip fracture patients.

Methods: Retrospective review of 415 patients with operatively managed hip fracture. Protein-energy malnutrition was defined as albumin < 3.5g/dl and TLC < 1,500 cells/ mm3. Delay to operation, duration of in-patient stay, readmission (< 3 months) and in-patient, 3- and 12-month mortality were assessed as outcome variables.

Results: Survival data was available for 377 patients at 12 months. Of 377 patients, 53% (n=200) had both a serum albumin and TLC levels taken at admission (study), while 47% (n=177) had not (control). Incidence of PEM was 51%. Older patients were more likely to have lower albumin (p=0.03) and TLC (p=0.012). Nursing home patients were also more likely to have lower albumin (p=0.049). In-hospital mortality for PEM patients was 9.8%, compared with 0% for patients with normal values of both laboratory parameters. Patients with PEM had a higher 12-month mortality compared to patients who had normal values of both laboratory parameters (Odds Ratio=4.52; p=0.049).

Conclusion: Serum albumin and TLC in combination are accurate predictors of 12-month mortality in hip fracture patients. These results underscore the clinical relevance of assessing the nutritional status of patients with hip fractures at the time of admission and emphasises the relationship between nutrition and outcome in these patients.

Hypothesis: Athletes significantly alter their lumbar spinal motion when performing squat lifting at heavy weights. This altered motion effects a change in pressure in the posterior annulus of lumbar discs.

Study Design:

3-D motion analysis of lumbar spinal motion in athletes, during squat weight lifting.

Methods: 48 athletes performed 6 lifts at 40% maximum, 4 lifts at 60% max and 2 lifts at 80% max. 3-D motion analysis system, measured lumbar spine motion. Exercise performed as a ‘free’ squat and repeated with a weight lifting support belt.

4 cadaveric sheep spinal motion segments mounted in purpose built jig, replicating angulation seen in the in vivo motion study. These samples were then fixed to a tension/compression loading frame, replicating the forces seen in the in vivo study. Pressure measurement was achieved using a Flexiforce single element force sensor strip, positioned at the posterior annulus.

Posterior annulus pressure was measured during axial compression and on compression with the specimen fixed at 3° of extension.

Results:

Significant decrease (p< 0.05) in flexion in all groups when lifting at 40% max was compared with lifting at 60% and 80% of max. Flexion from calibrated zero point ranged from 24.7° (40% group), to 6.8° (80% group). A progressively significant increase (p< 0.05) seen in extension in groups studied when lifting at 40% max was compared with lifting at 60% and 80% max lift. Extension from a calibrated zero point ranged from − 1.5° (40% group), to − 20.3° (80% group). No statistically significant difference found between motion seen when performing the exercise as a ‘free’ squat or when lifting using a support belt in any group studied.

Comparing axially loaded specimens with specimens loaded in extension, there was an average increase in pressure of 36.4% in the posterior annulus, when the spine was loaded in 3° of extension at a pressure equivalent to the 80% lift in the in vivo motion study, in comparison to axial loading.

Conclusions: Squat weight lifting at heavier weights, causes athletes to lift at a progressively greater degree of extension. The use of a weight lifting support belt does not significantly alter spinal motion during lifting. The increased extension at heavier weights results in a stress concentration in the posterior annulus of lumbar discs.

Introduction: The position of the L4/5 disc inter-space is commonly believed to be represented by a line drawn between the two highest points of the iliac crests. This line is used frequently as a pre-operative guide for incision placement, in patients undergoing spinal surgery.

Aim: To investigate whether a line drawn between the two highest points on the iliac crests corresponds to the L4/5 disc inter-space, in varying patient age groups.

Patients and Methods: We reviewed 450 AP and lateral lumbar spine radiographs in patients ranging in age from 20 – 90 years. Patients with an obvious deformity or previous spinal surgery were excluded from the study. In the AP films, a line was drawn between the two highest points on the iliac crests. From this line, the distance to the midpoint of the L4/5 disc was measured.

Results: In all age groups measured, the true L4/5 disc inter-space lay below the line between the iliac crests, at an average of 4.33mm below the supracristal plane. The plane intersected the spine at the L4/5 interspace in only 31.9% of cases and was found to lie at the lower half of the L4 body or above in 49.3% of cases.

Conclusions: These results show that, using a line drawn between the two highest points on the iliac crests as a guide to the position of the L4/5 disc interspace may lead to unintentionally cranial positioning of an incision or cannulation in this area. Therefore, it is advisable to perform a pre-operative AP and lateral radiograph of the lumbar spine, to enable accurate incision placement when performing spinal surgery in this area.

Introduction: The position of the L4/5 disc inter-space is commonly believed to be represented by a line drawn between the two highest points of the iliac crests. This line is used frequently as a pre-operative guide for incision placement, in patients undergoing spinal surgery.

Aim: To investigate whether a line drawn between the two highest points on the iliac crests corresponds to the L4/5 disc inter-space, in varying patient age groups.

Patients and Methods: We reviewed 450 AP and lateral lumbar spine radiographs in patients ranging in age from 20 – 90 years. Patients with an obvious deformity or previous spinal surgery were excluded from the study. In the AP films, a line was drawn between the two highest points on the iliac crests. From this line, the distance to the midpoint of the L4/5 disc was measured. This was achieved in the lateral films, by finding the midpoint between the two iliac crests and again measuring the distance from this point to the midpoint of the L4-5 disc.

Results: In all age groups measured, the true L4-5 disc inter-space lay below the line between the iliac crests. In the patient group a 20–30 yrs, the inter-iliac crest line lay on average 1.86 mm above the true l4–5 disc space. In the patients aged 30–40 yrs the line was on average 2.49 mm above the disc space. Patients aged 40–50 yrs the line was 6.05 mm above the disc space. In patients aged 50–60 yrs and 60–70 yrs, the line was 3.17 mm above the disc space. In the 70–80 yrs age group, the line was 4.5 mm above the true disc space. In the oldest group of patients studied (80–90 yrs), the line was positioned 9.06 mm above the true disc space. The results were analysed using the ANOVA system to assess their statistical significance. Comparison of the patients aged 20–30 yrs versus patients aged 80–90 yrs yielded a p value of p=0.0045. Patients aged 60–70 yrs versus patients aged 80–90 yrs, p=0.0049. Patients aged 50–60 yrs versus patients aged 80–90 yrs, p=0.0023. Patients aged 30–40 yrs versus patients aged 80–90 yrs, p=0.0004. Patients aged 70–80 yrs versus patients aged 80–90 yrs, p=0.03. Comparison of other patient groups, were of low statistical significance

Conclusions These results show that, while the L4/5 disc inter-space does broadly correspond to a line drawn between the iliac crests, there is a significant variation between different age groups and within individual age groupings. Therefore, it is advisable to perform a pre-operative AP and lateral radiograph of the lumbar spine, to enable accurate incision placement when performing spinal surgery in this area.