Modified Evans technique improves plantar pressure distribution in lateral ankle instability

OBJECTIVES

Efficiency of the modified Evans technique based on clinical and radiological evaluations was determined by plantar pressure measurement.

PATIENTS AND METHODS

Eleven patients (2 females, 9 males; mean age 29 years; range 19 to 39 years) with chronic lateral ankle instability were surgically treated using the modified Evans technique. Plantar pressures of nine patients were measured pre- and post-operatively.

RESULTS

Plantar pressure below the first metatarsal head decreased in seven of the patients after surgery. Furthermore, in all of the patients, the time of initial contact decreased significantly and the pathology returned to normal limits in the postoperative period.

CONCLUSION

Modified Evans technique, despite its controversial long-term outcomes in lateral ankle instability, decreases first metatarsal head pressure and initial contact time significantly.

Myths and legends in orthopaedic practice: are we all guilty?

Over years of practice, many beliefs and practices become entrenched as tried and tested, and we subconsciously believe they are based on scientific evidence. We identified nine such beliefs by interviewing orthopaedic surgeons in which studies (or lack thereof) apparently do not support such practices. These are: changing the scalpel blade after the skin incision to limit contamination; bending the patient's knee when applying a thigh tourniquet; bed rest for treatment of deep vein thrombosis; antibiotics in irrigation solution; routine use of hip precautions; routine use of antibiotics for the duration of wound drains; routine removal of hardware in children; correlation between operative time and infection; and not changing dressings on the floor before scrubbing. A survey of 186 practicing orthopaedic surgeons in academic and community settings was performed to assess their routine practice patterns. We present the results of the survey along with an in-depth literature review of these topics. Most surgeon practices are based on a combination of knowledge gained during training, reading the literature, and personal experience. The results of this survey hopefully will raise the awareness of the selected literature for common practices.

Auditing orthopaedic audit

INTRODUCTION

Clinical audit plays an important role in the drive to improve the quality of patient care and thus forms a cornerstone of clinical governance. Assurance that the quality of patient care has improved requires completion of the audit cycle. A considerable sum of money and time has been spent establishing audit activity in the UK. Failure to close the loop undermines the effectiveness of the audit process and wastes resources.

PATIENTS AND METHODS

We analysed the effectiveness of audit in trauma and orthopaedics at a local hospital by comparing audit projects completed over a 6-year period to criteria set out in the NHS National Audit and Governance report.

RESULTS

Of the 25 audits performed since 1999, half were presented to the relevant parties and only 20% completed the audit cycle. Only two of these were audits against national standards and 28% were not based on any standards at all. Only a third of the audits led by junior doctors resulted in implementation of their action plan compared to 75% implementation for consultant-led and 67% for nurse-led audits.

CONCLUSIONS

A remarkably large proportion of audits included in this analysis failed to meet accepted criteria for effective audit. Audits completed by junior doctors were found to be the least likely to complete the cycle. This may relate to the lack of continuity in modern medical training and little incentive to complete the cycle. Supervision by permanent medical staff, principally consultants, and involvement of the audit department may play the biggest role in improving implementation of change.

The quality of reporting of orthopaedic randomized trials with use of a checklist for nonpharmacological therapies

BACKGROUND

The Consolidated Standards of Reporting Trials statement for the reporting of randomized controlled trials has been limited by its applicability to surgical trials. In response, a Checklist to Evaluate a Report of a Nonpharmacological Trial was recently developed by the Consolidated Standards of Reporting Trials group to address reporting issues in surgical trials. We aimed (1) to apply the checklist for nonpharmacological therapies to orthopaedic randomized controlled trials across multiple journals from 2004 through 2005, and (2) to survey authors when methodological safeguards itemized in the checklist were not reported to determine whether they actually had been performed. We hypothesized that lack of reporting of a methodological safeguard did not necessarily mean it had not been conducted.

METHODS

We searched for relevant orthopaedic randomized controlled trials across eight journals in the period from January 2004 through December 2005. We applied the Checklist to Evaluate a Report of a Nonpharmacological Trial to all eligible studies. We contacted authors to determine what methodological safeguards were actually used, especially when details remained unclear from the publication.

RESULTS

We included eighty-seven randomized controlled trials from eighty-five scientific reports. In assessing the randomized controlled trials with the checklist for nonpharmacological therapies, seventy-three studies (84%) had unclear reporting of treatment allocation concealment. Only seventeen studies (20%) mentioned surgeon skill or experience. The blinding of patients, ward staff, rehabilitation staff, clinical outcome assessors, and nonclinical outcome assessors was unclear in forty-eight (55%), sixty-three (72%), sixty-four (74%), forty (46%), and thirty-three studies (38%), respectively. Authors from forty-three randomized controlled trials responded to our survey. The results of the survey showed that 41% (95% confidence interval, 25% to 58%) of the trials had adequate allocation concealment when this had been unclear from the report. Although the surgical experience of the investigators was rarely reported, most authors (70%) acknowledged that they had defined "surgical expertise criteria" such as minimum case criteria, specialized training, and clinical performance. The survey also showed that 28% to 40% of the trials had blinding of relevant groups despite the fact that the reporting of such blinding had been unclear in the publications.

CONCLUSIONS

The quality of reporting in the orthopaedic literature was highly variable. Readers should not assume that bias-reducing safeguards that were not reported in a randomized controlled trial did not occur. Our study reinforces the need for the consistent use of a tool like the Checklist to Evaluate a Report of a Nonpharmacological Trial to assess the methodology of surgical trials.

The mechanical properties of the ligamentum teres: a pilot study to assess its potential for improving stability in children's hip surgery

The anatomic and histological characteristics of the ligamentum teres and its vascular contributions to the femoral head have been well described. The function of the ligamentum teres remains poorly understood. Although excision is the current standard in treating complete developmental hip dysplasia, we developed an interest in maintaining, shortening, and reattaching the ligament to assure early postoperative stability in developmental hip dysplasia. To analyze its potential for providing hip joint stability, we investigated the biomechanical properties of the ligamentum teres in an in vitro porcine model. Six immature porcine hips were dissected, with the proximal femur and acetabular anatomy kept intact, isolating the ligamentum teres. Specimens were loaded in tension using custom fixation rigs at 0.5 mm/s in line with the fibers. Data for displacement and force were collected and sampled at 10 Hz for duration of each test. The ligamentum teres failed in a stepwise fashion. The mean ultimate load to failure was 882 +/- 168 N. Mean stiffness and failure stress were calculated as 86 +/- 25 N/mm and 10 +/- 2 MPa, respectively. The biomechanical function of the ligamentum teres is not inconsequential. We found the ultimate load of the ligamentum teres in the porcine model to be similar to those reported for the human anterior cruciate ligament. The strength of the ligamentum teres may confirm its potential for providing early stability in childhood hip reconstructions. In the setting of dysplasia, the preservation and the transfer of the ligamentum teres to augment stability should be considered as an adjunct to open reduction.

[Clinical management of polytraumatized patients in the emegergency room--duty and assignment of the trauma surgeon]

After stabilization an optimal therapeutic strategy influences outcome in polytraumatized patients. A trauma team leader in early clinical course is necessary to optimize diagnostics and planning of further treatment. Special training systems like ATLS can help to standardize management of trauma patients. In most German trauma centers an orthopaedic trauma surgeon is the team leader in the emergency room during early clinical course of patients with multiple injuries. After identification of most threatening injuries he must decide next diagnostics steps and planning of further treatment within a short period of time. Especially in patients with abdominal bleeding and severe brain injury time is the most critical factor. If he is not able to treat these injuries alone, physicians from other specialties must be involved. The trauma team leader must be aware of different treatment concepts like early total care and damage control orthopaedics.

To err is human: quality and safety issues in spine care

STUDY DESIGN

A review of issues linking advocacy, patient safety, and quality.

OBJECTIVE

To heighten awareness of patient safety issues that require ongoing advocacy efforts by physicians treating spinal disorders.

SUMMARY OF BACKGROUND DATA

The 1999 Institute of Medicine report "To Err is Human. Building a Safer Health System" was a landmark publication that vaulted patient safety into the limelight of public awareness and media attention. The American Academy of Orthopedic Surgeons had addressed the wrong site surgery issue with its Sign Your Site Program even before the Institute of Medicine report. Several professional medical societies involved in spine care have made advocating for patient safety a priority.

METHODS

A summary of areas of advocacy efforts involving patient safety and quality. These include the Sign Your Site Program from the American Academy of Orthopedic Surgeons, Sign, Mark and X-ray from the North American Spine Society, Joint Commission on the Accreditation of Healthcare Organizations Universal Protocol, and technology assessment. Advocacy on the Federal, state, and local levels concerning patient safety is reviewed.

RESULTS

Awareness of patient safety issues has increased. Several patient safety protocols (Sign Your Site, Sign, Mark and X-ray, and the Universal Protocol) are in place. There is increased monitoring of medical errors on the state and local, especially hospital, levels.

CONCLUSIONS

Patient safety is an absolute provision of health care. Physicians need to set a personal example for compliance with existing patient safety systems such as the Universal Protocol and be active advocates for patient safety.

Comparison of responsiveness of the Japanese Society for Surgery of the Hand version of the carpal tunnel syndrome instrument to surgical treatment with DASH, SF-36, and physical findings

BACKGROUND

The Japanese Society for Surgery of -the Hand version of the Carpal Tunnel Syndrome Instrument (CTSI-JSSH), which consists of two parts--one for symptom severity (CTSI-SS) and the other for functional status (CTSI-FS)--is a self-administered questionnaire specifically designed for carpal tunnel syndrome. The responsiveness of the CTSI-JSSH was compared with that of the JSSH version of the Disability of Arm, Shoulder, and Hand questionnaire (DASH), the official Japanese version of the 36-Item Short Form Health Survey (SF-36, version 1.2), and physical examinations to elucidate the role of the CTSI-JSSH for evaluating patients with carpal tunnel syndrome.

METHODS

Preoperatively, a series of 60 patients with carpal tunnel syndrome completed the CTSI-JSSH, DASH, and SF-36. Results of physical examinations, including grip strength, pulp pinch, and static two-point discrimination of the thumb, index, and long fingers, were recorded. Three months after carpal tunnel release surgery the patients were asked to fill out the same questionnaires, and the physical examinations were repeated. The responsiveness of all the instruments was examined by calculating the standardized response mean (SRM) and effect size (ES). Correlation coefficients were calculated between questionnaire change scores and patient satisfaction scores as well as between the CTSI change scores and those of the DASH and SF-36.

RESULTS

The largest responsiveness was observed in the CTSI-SS (SRM/ES: -1.00/-1.08) followed by the CTSI-FS (-0.76/-0.63), and bodily pain subscale of SF-36 (SF-36-BP, 0.45/0.55), and the DASH (-0.46/-0.47). Only the change scores of the CTSI-SS had significant correlation with patient satisfaction (r = 0.34, P < 0.01). An absolute value of Spearman's correlation coefficient of >0.5 was observed between the change scores of the CTSI-SS and the DASH, the CTSI-SS and the SF-36-BP, the CTSI-FS and the DASH, and the DASH and the SF-36-BP.

CONCLUSION

The CTSI-JSSH was proven to be more sensitive to clinical changes after carpal tunnel release than the other outcome measures and should be used to evaluate patients with carpal tunnel syndrome who speak Japanese as their native language.

Learning curves in orthopaedic surgery: a case for super-specialisation?

INTRODUCTION

The objective of this study was to assess if there is a significant learning curve in the treatment of developmental dysplasia of the hip.

PATIENTS AND METHODS

We followed up cases of developmental dysplasia of the hip treated by a single surgeon over a 12-year period. There were 96 cases, 56 treated by open reduction and 40 treated by closed reduction. Assessment was made of the incidence and degree of avascular necrosis in the treated hips, as a radiological outcome measure.

RESULTS

Plotting the cumulative percentage of satisfactory outcomes demonstrated an increasingly high percentage of satisfactory results with increasing number of procedures performed, i.e. as the surgeon progressed up the 'learning curve'.

CONCLUSIONS

This study demonstrates a learning curve in the treatment of developmental dysplasia of the hip. It may be possible to draw parallels to other treatments, and also support for the growing trend to specialisation.

Experience of wrong site surgery and surgical marking practices among clinicians in the UK

BACKGROUND

Little is known about the incidence of "wrong site surgery", but the consequences of this type of medical error can be severe. Guidance from both the USA and more recently the UK has highlighted the importance of preventing error by marking patients before surgery.

OBJECTIVE

To investigate the experiences of wrong site surgery and current marking practices among clinicians in the UK before the release of a national Correct Site Surgery Alert.

METHODS

38 telephone or face-to-face interviews were conducted with consultant surgeons in ophthalmology, orthopaedics and urology in 14 National Health Service hospitals in the UK. The interviews were coded and analysed thematically using the software package QSR Nud*ist 6.

RESULTS

Most surgeons had experience of wrong site surgery, but there was no clear pattern of underlying causes. Marking practices varied considerably. Surgeons were divided on the value of marking and varied in their practices. Orthopaedic surgeons reported that they marked before surgery; however, some urologists and ophthalmologists reported that they did not. There seemed to be no formal hospital policies in place specifically relating to wrong site surgery, and there were problems associated with implementing a system of marking in some cases. The methods used to mark patients also varied. Some surgeons believed that marking was a limited method of preventing wrong site surgery and may even increase the risk of wrong site surgery.

CONCLUSION

Marking practices are variable and marking is not always used. Introducing standard guidance on marking may reduce the overall risk of wrong site surgery, especially as clinicians work at different hospital sites. However, the more specific needs of people and specialties must also be considered.

Reduced morbidity for elderly patients with a hip fracture after implementation of a perioperative evidence-based clinical pathway

BACKGROUND

Hip fractures, common in the elderly population, result in significant morbidity and mortality. A study was undertaken to determine how an evidence based clinical pathway (CP) for treatment of elderly patients with hip fracture affected morbidity, in-hospital mortality, and health service utilization.

METHODS

A pre-post study design using two population based inception cohorts of hip fracture patients aged > or =65 years was used. The control group (n = 678) was enrolled between July 1996 and September 1997 before implementation of the pathway and the CP group (n = 663) was enrolled between July 1999 and September 2000 following pathway implementation. Chart reviews were completed during study time frames to determine complications, mortality, and health service utilization.

RESULTS

Only nine patients (1%) in the CP group experienced postoperative congestive heart failure compared with 37 (5%) control patients (p<0.001). Postoperative cardiac arrythmias were significantly lower in the CP group than in the control group (8 (1%) v 36 (5%); p<0.001). Postoperative delirium occurred in 22% of the CP group and 51% of the control group (p<0.001). There was no difference in risk adjusted in-hospital mortality between the two groups. Overall length of stay (LOS) and costs were unchanged between the groups; however, hospital LOS increased while rehabilitation LOS decreased in the CP group.

CONCLUSION

Implementation of an evidence based clinical pathway reduced postoperative morbidity and did not affect in-hospital mortality or overall costs of inpatient care. The effect of changing trends in medical care cannot be ruled out, but the reduction in complications in several clinical areas lends support to the positive impact of the clinical pathway. Perioperative CP is one successful management approach for this fragile patient population as patient morbidity was reduced without negatively affecting resource utilization.

Validation of the Japanese Society for Surgery of the Hand version of the Carpal Tunnel Syndrome Instrument

BACKGROUND

The Carpal Tunnel Syndrome Instrument (CTSI) is a disease-specific, self-administered questionnaire that consists of a symptom severity scale (SS) and a functional status scale (FS). The CTSI was cross-culturally adapted and developed by the Impairment Evaluation Committee, Japanese Society for Surgery of the Hand (JSSH). The purpose of this study was to test the reliability, validity, and responsiveness of the Japanese version of the CTSI (CTSI-JSSH).

METHODS

A consecutive series of 87 patients with carpal tunnel syndrome completed the CTSI-JSSH, the JSSH version of the Disability of the Arm, Shoulder, and Hand questionnaire (DASH-JSSH), and the 36-Item Short-Form Health Survey (SF-36). Seventy-two of the patients were reassessed for test-retest reliability 1 or 2 weeks later. Reliability was investigated by the reproducibility and the internal consistency. To analyze the validity, a factor analysis (principal axis factoring) of the CTSI-JSSH and the correlation coefficients between the CTSI-JSSH and DASH-JSSH were obtained. The responsiveness was examined by calculating the standardized response mean (SRM; mean change/SD) and effect size (mean change/SD of baseline value) after carpal tunnel release in 42 patients.

RESULTS

Cronbach's alpha coefficients for the CTSI-JSSH-SS and the CTSI-JSSH-FS were 0.84 and 0.90, respectively, and the intraclass correlation coefficients were 0.82 and 0.83, respectively. The unidimensionality of the CTSI-JSSH-SS was barely confirmed; the unidimensionality of the CTSI-JSSH-FS was confirmed. The correlation coefficients between the CTSI-JSSH-FS and the CTSI-JSSH-SS or DASH-JSSH were 0.58 and 0.80, respectively. The correlation coefficient between the CTSI-JSSH-SS and DASH-JSSH was 0.54. The correlation coefficients between the subscales of SF-36 and the CTSI-JSSH-SS or the CTSI-JSSH-FS ranged from -0.23 to -0.66 and from -0.19 to -0.63, respectively. The SRMs/effect sizes of the CTSI-JSSH-SS and the CTSI-JSSH-FS were -0.85/-0.99 and -0.70/-0.61, which indicated that they were more than moderately sensitive.

CONCLUSIONS

The CTSI-JSSH has sufficient reliability, validity, and responsiveness to assess the health status in carpal tunnel syndrome.

Surface-data-based haptic rendering for simulation of surgery of closed reduction and internal fixation

This paper presents a surface-data-based haptic rendering method for simulation of surgery of closed reduction and internal fixation (CRIF). Volumetric data is often employed in the simulation of bone surgery because the volume rendering can easily handle information such as density and rigidity of each voxel. However, it is difficult to implement real-time graphics and haptic rendering because of the large computational workload. Therefore, we propose a surface-data-based haptic rendering method for real-time rendering. Mechanical properties and graphics of the inner part of the bone should be modeled in addition to the surface data to simulate drilling into the bone. An algorithm is developed to construct the surface of the drilled hole. This method allows the user of the simulation to feel the varying forces according to the drilled depth.

[The quality of diagnosis and procedure coding in Orthopaedic surgery Northern Jutland]

INTRODUCTION

When the aim is for high quality, efficiency and a balanced allocation of resources in health services, there is a constant demand for optimisation of the quality of registration regarding diagnosis, treatment and DRG-values (DRG = Diagnosis Related Groups). Since the mid-nineties the DRG-system has been used to shed light on productivity in Danish hospitals. This study investigates the quality of registrations after the introduction of an organization for registrations in the county of Northern Jutland.

MATERIAL AND METHODS

The registrations from 554 orthopaedic patients, both in-patient and day case surgery, during a two-week period, were scrutinised critically and changed as appropriate, based on a thorough examination of the medical records.

RESULTS

In 37% of the courses registrations were found insufficient or incorrect. In 27% of the cases there was a need for a change in either the diagnosis taken action on, a secondary diagnosis or the treatment registration. 10% had two or three changes. In 11% of the courses of treatment the DRG-value was changed. On average DKK 974 were added, constituing in total only 0.4% of the total DRG-value. But single variations from deductions of DKK 56,000 to an addition of DKK 39,000 were observed. The gravest mistakes are elucidated.

CONCLUSION

Locally, there is a need for continuous instruction of both doctors and secretaries regarding correct registration of diagnosis and treatment as well as an improvement of the registration facilities. On a national basis more precise recommendations are required within the medical specialist areas in order to secure an unambiguous registration.

Patient preferences regarding spine surgical decision making

STUDY DESIGN

Patient surveys to determine preferences in surgical decision making.

OBJECTIVE

To evaluate spine patient preferences regarding physician and patient roles in surgical decision making and to discuss the ethical considerations that arise.

SUMMARY OF BACKGROUND DATA

Since the 1980s, there has been a push toward increasing patient autonomy and self-determination, and away from the paternalism of the past. Commensurate with this shift, patients have been encouraged to take the primary active role in surgical decision making. To date, there is little empirical evidence regarding how deeply patients want to be involved in this decision-making process.

METHODS

A total of 200 consecutive patients seen at our academic spine center were administered 1 of 2 questionnaires (previously validated) aimed at determining patient preferences about how clinical decision making should take place.

RESULTS

Patients felt strongly that complete risk information be provided. The majority of patients felt that the physician, rather than the patient, should make the basic treatment decision, and the great majority felt that the physician should make the technical decisions regarding treatment.

CONCLUSIONS

Spine surgical patients often prefer to defer surgical decision making to their surgeons. In clinical scenarios where there is little controversy and the evidence is clear, this results in little consequence, assuming that the surgeon aims to provide evidence-based care. In scenarios with greater controversy and less clear evidence, the choice of treatment offered by the surgeon may be based on factors outside of the available science, and, accordingly, efforts should be made to educate fully the patient and to help the patient make his/her own decision based on personal values regarding outcomes.

Where does surgery for the injured hand figure in the health providers view: an international perspective

This paper looks at the provision, manpower and education globally and discusses the reasons for the lack of support for surgery, including that of the injured hand, and explores the possible areas for improvement.

Recommendations for the improvement of hand injury care across the world

This paper discusses the four aspects, which need attention if the management of hand injury is to improve globally. These areas include the provision of information, targeted education, relevant and well-supported audit and research and the improvement of infrastructure. The paper explores what needs to be done, the time frame for improvement and how this may be achieved. The strategy developed needs to remain sensitive to the local needs and capacity.

Thoracic and thoracolumbar kyphosis in adults

STUDY DESIGN

Author experience and literature review.

OBJECTIVES

To investigate the spectrum of adult kyphosis and to discuss the various surgical and nonsurgical treatment options.

SUMMARY OF BACKGROUND DATA

Kyphosis with its various etiologies and associated pathophysiologies has been discussed in the literature for many decades. The nonsurgical treatment primarily consists of symptom reduction via physical therapy and has not changed significantly for decades. The surgical treatment, however, has changed dramatically. A decade ago, most large kyphotic deformities required anterior and posterior procedures. With the advent of numerous posterior osteotomy techniques and pedicle fixation, most of these deformities are now treated via posterior methods only.

METHODS

Using literature review and the author's experience, kyphosis and its characteristics will be discussed. Important details pertinent to presurgical planning and execution of surgical will be discussed. Three cases will be presented to illustrate the surgical treatment options for three qualitatively different kyphotic deformities.

RESULTS

Flexible kyphotic deformities may respond well to aggressive facetectomies and cantilever corrections. Multisegmental osteotomies may be most appropriate for long sweeping deformities. Fixed, sharply, angulated deformities may respond best to pedicle subtraction osteotomies or vertebral column resections.

CONCLUSION

Segmental pedicle screw fixation coupled with one of four posterior osteotomy/resection techniques can be used to address most sagittal plain deformities. Careful application of these techniques is important. Smith-Petersen and Ponte osteotomies are most appropriate for long sweeping deformities with mobile anterior columns. Pedicle subtraction osteotomies and vertebral column resections are most appropriate for fixed, sharply angulated spinal deformities. The successful application of these techniques is dependent on accurate preoperative evaluation of the structural properties of the kyphosis and meticulous execution of the surgical technique.