Comparison between intra-articular injections of corticosteroids, hyaluronic acid, PRP and placebo for thumb base osteoarthritis: A frequentist network meta-analysis

Background and aims

Current evidence for the use of intra-articular injections for thumb base osteoarthritis (TBOA) is equivocal. This study aims to investigate the efficacy of intra-articular corticosteroids, hyaluronic acid and platelet-rich plasma.

Methods

A Frequentist network meta-analysis was conducted comparing outcomes at short (≤3 months) and medium-term (>3-12 months) time points.

Results

Data from 7 RCTs and 1 non-RCT (446 patients) were collected, consisting of corticosteroids (n = 7), hyaluronic acid (n = 7), platelet-rich plasma (n = 2) and placebo (n = 2). At the short-term time point, no intra-articular injection demonstrated superiority over placebo at reducing pain. At the medium-term time point, superiority of platelet-rich plasma at reducing pain over placebo and corticosteroids was seen following sensitivity analysis (RCTs only) (SMD -1.48 95 % CI -2.71; -0.25). No injection proved superior at improving function at short or medium-term time points.

Conclusions

Overall, despite the promising result for platelet-rich plasma, the evidence quality was limited to two studies only justifying the need for further and larger methodologically robust trials investigating corticosteroids, hyaluronic acid and platelet-rich plasma vs each other and placebo.

Change in capitate shift after osteotomy for distal radial fracture malunion

Loss of anterior tilt after a distal radial fracture can lead to carpal malalignment, which may cause functional impairment. The aim of this study was to establish whether distal radial osteotomy for malunion, which primarily restores the dorsal tilt, will also improve carpal malalignment as measured by capitate shift. Radiographs of 67 patients who underwent osteotomy after malunion of a distal radial fracture were reviewed. Measurements of capitate shift and dorsal tilt were recorded. Linear regression modelling was used to assess the relationship between dorsal tilt and capitate shift. Change in capitate shift was strongly associated with change in dorsal tilt following osteotomy. This relationship was maintained on long-term radiographs. Capitate shift is strongly related to dorsal tilt following a distal radial fracture. Correcting the dorsal tilt during an osteotomy, therefore, will improve capitate shift and carpal malalignment. Capitate shift is unrelated to age, sex and is easy to visually assess.Level of evidence: IV.

The onset, progress and factors influencing degenerative arthritis of the wrist following scaphoid fracture non-union

BACKGROUND/AIMS

Scaphoid non-union causes osteoarthritis but factors associated are poorly understood. We investigated the rate of osteoarthritis after scaphoid fracture non-union, and if duration and fracture location influenced arthritis and its severity.

METHODS

This retrospective cross-sectional observational study of 278 consecutive cases with scaphoid fracture non-union retrieved data on demographics, non-union duration, fracture location, dorsal intercalated segment instability (DISI), severity and distribution of wrist arthritis. Patient Evaluation Measure (PEM) and Quality of Life assessed impact on patients. Regression models investigated prediction of osteoarthritis by different variables. Time-to-event analysis investigated osteoarthritis evolution. Missing (MAR) data for the PEM and QoL was imputed and analysed.

RESULTS

278 patients, 246 males, aged 27.9 years (range 11 to 78 years), with a scaphoid fracture non-union confirmed on computed tomography (CT) scans (243) and plain radiographs (35) were reviewed. The interval between injury and imaging was 3.3 years (SD 5.9 years; range 0.1-45). The fracture was proximal to the ridge in 162, distal to the ridge in 83 and in the proximal 20% in 33. DISI (RLA ≥ 10°) occurred in 93.5% (260/278). Osteoarthritis was identified in 62.2% (173/278), and we classified a SNAC pattern in 93.6% (162/173). Of these, 100 (61.7%) had SNAC 1, 22 (13.6%) SNAC 2, 17 (10.5%) SNAC 3, and 23 (14.2%) SNAC 4. The mean duration in years for SNAC 1, 2, 3 and 4 were 2.5, 6.0, 8.2, and 11.3 years respectively. In fractures proximal to the ridge, 50% had arthritis in 2.2 years. Whereas in proximal pole, and distal to the ridge, 50% developed in 3.8 and 6.6 years, respectively. The PEM score was 42.8% (SD 18.9%) in those without arthritis and 48.8% (SD 21.5%) in those with arthritis. The mean QoL was 0.838 in patients without SNAC and 0.792 with SNAC.

CONCLUSION

Scaphoid fracture non-union caused early carpal collapse, majority had osteoarthritis usually observed within a year following injury and occurred earliest in proximal waist fractures. Distribution of osteoarthritis (SNAC stage) may not always follow a distinctive pattern, as previously described.

Factors Associated with Timely Surgery for Semi-elective Distal Radius Fracture Fixation

Background  In the United Kingdom, national guidance recommends intra-articular distal radius fractures should undergo surgery within 72 hours and extra-articular fractures within 7 days. Purpose  We investigated if hospitals can provide timely surgery and meet national guidelines in patients who are sent home following distal radius fracture (DRF) to return for planned surgery. The influence of patient, hospital, and seasonal factors on wait to surgery are investigated. Patients and Methods  We reviewed Hospital Episode Statistics (HES) data between April 2009 and March 2013. Proportion of procedures being performed within 3 and 7 days was calculated. A linear regression model was created to investigate the relationship between wait for surgery and patient and hospital factors. Results  A total of 9,318 patients were sent home to return for planned acute DRF surgery during the 4-year study period. Mean time to surgery was 3.04 days (range 1-days, standard deviation [SD] 3.14). A total of 6,538 patients underwent surgery within 3 days (70.2%) and 8,747 within 7 days (93.9%). Patients listed for surgery and sent home to return waited longer if listed toward the end of the week. Less surgery was performed at weekends, and patients were less likely to be listed for semielective trauma surgery. Conclusions  Acute semielective DRF fixation is generally performed within targets for extra-articular fractures but there is scope for improvement for intra-articular fractures. Day of presentation and increasing number of comorbidities increase wait for surgery. Hospital trusts should focus on improving pathways for patients with multiple comorbidities and strategies to improve accessibility of these services at weekends.

Patient experiences of scaphoid waist fractures and their treatment

Aims

To explore individuals’ experience of a scaphoid waist fracture and its subsequent treatment.

Methods

A purposive sample was created, consisting of 49 participants in the Scaphoid Waist Internal Fixation for Fractures Trial of initial surgery compared with plaster cast treatment for fractures of the scaphoid waist. The majority of participants were male (35/49) and more younger participants (28/49 aged under 30 years) were included. Participants were interviewed six weeks or 52 weeks post-recruitment to the trial, or at both timepoints. Interviews were semistructured and analyzed inductively to generate cross-cutting themes that typify experience of the injury and views upon the treatment options.

Results

Data show that individual circumstances might exaggerate or mitigate the limitations associated with a scaphoid fracture, and that an individual’s sense of recovery is subjective and more closely aligned with perceived functional abilities than it is with bone union. Misconceptions that surgery promises a speedier and more secure form of recovery means that some individuals, whose circumstances prescribe a need for quick return to function, express a preference for this treatment modality. Clinical consultations need to negotiate the imperfect relationship between bone union, normal function, and an individual’s sense of recovery. Enhancing patients’ perceptions of regaining function, with removable splints and encouraging home exercise, will support satisfaction with care and discourage premature risk-taking.

Conclusion

Clinical decision-making in the management of scaphoid fractures should recognize that personal circumstances will influence how functional limitations are experienced. It should also recognize that function overrides a concern for bone union, and that the consequences of fractures are poorly understood. Where possible, clinicians should reinforce in individuals a sense that they are making progress in their recovery.

Cite this article: Bone Jt Open 2022;3(8):641–647.

One-year outcome of surgery compared with immobilization in a cast for adults with an undisplaced or minimally displaced scaphoid fracture : a meta-analysis of randomized controlled trials

AIMS

There has been an increasing use of early operative fixation for scaphoid fractures, despite uncertain evidence. We conducted a meta-analysis to evaluate up-to-date evidence from randomized controlled trials (RCTs), comparing the effectiveness of the operative and nonoperative treatment of undisplaced and minimally displaced (≤ 2 mm displacement) scaphoid fractures.

METHODS

A systematic review of seven databases was performed from the dates of their inception until the end of March 2021 to identify eligible RCTs. Reference lists of the included studies were screened. No language restrictions were applied. The primary outcome was the patient-reported outcome measure of wrist function at 12 months after injury. A meta-analysis was performed for function, pain, range of motion, grip strength, and union. Complications were reported narratively.

RESULTS

Seven RCTs were included. There was no significant difference in function between the groups at 12 months (Hedges' g 0.15 (95% confidence interval -0.02 to 0.32); p = 0.082). The complication rate was higher in the operative group and involved more serious complications.

CONCLUSION

We found no difference in functional outcome at 12 months for fractures of the waist of the scaphoid with ≤ 2 mm displacement treated operatively or nonoperatively. The complication rate was higher with operative treatment. Cite this article: Bone Joint J 2022;104-B(8):953-962.

Ulnar variance in distal radial fractures: assessment and interpretation

We explored patterns of shortening of the distal radius and investigated the effect of displacement on 'ulnar variance' in 250 patients with distal radial fractures. A small number of patients (5%) had a fracture that resulted in true shortening. Thirty-two per cent had fractures that appeared short, but lateral radiographs revealed that the articular surface was tilted, with either the anterior or dorsal rim of the articular surface being proximal to the distal ulna but the other rim was distal to it. We recommend initial assessment of variance on lateral radiographs. If the anterior and dorsal rims of the distal radial articular surface are proximal to the distal ulna, then true shortening is present and lengthening and stabilization, to hold the radius distracted, should be considered. If only one rim is proximal to the distal ulna, then correction of the tilt will lessen the apparent positive variance.Level of evidence: IV.

Kirschner Wire Fixation in Dorsally Displaced Distal Radius Fractures: A Biomechanical Evaluation

Background  There is currently no consensus for the optimum configuration and number of Kirschner wires (K-wires) to use for the stabilization of dorsally displaced distal radius fractures. In this biomechanical study, we compared the load to failure and stiffness of four common K-wire configurations to identify the strongest construct for use in extra-articular dorsally displaced distal radius fractures. Case Description  We created a standard distal radius fracture model in turkey tarsometatarsi which was stabilized using two or three K-wires (1.6 mm) in four different configurations. Following a power calculation, 10 fracture models of each configuration underwent testing in cantilever bending and axial compression. Literature Review  Recent randomized trials have shown no evidence that volar locking plates are superior to K-wires for the treatment of dorsally displaced distal radius fractures. This has led to an increase in the popularity of much cheaper K-wires. Several different K-wire techniques have been described but there is no strong evidence to determine which is the optimal configuration and number of wires. Clinical Relevance  The three-wire interfragmentary configuration was stiffer than the three-wire Kapandji in axial compression and cantilever bending. There was no difference in load to failure in cantilever bending or axial compression. The three-wire interfragmentary technique is the stiffest configuration of K-wires for dorsally displaced distal radius fractures. The two-wire Kapandji technique was significantly weaker than the other configurations, especially in cantilever bending. Conclusion  The authors recommend to always use three wires for percutaneous pinning and never to use two intrafocal wires alone.

Acute scaphoid fractures: making decisions for treating a troublesome bone

Seven aspects of the management of acute scaphoid fractures are open to debate: Diagnosis of true fractures among suspected fractures, assessment of fracture displacement, cast immobilization strategies, the role of surgical fixation, proximal pole fractures, assessment of union, and the underlying objective of treatment. We reviewed current evidence, and our varied interpretations of it, to highlight areas of uncertainty where more evidence might be helpful.

Origins of the threshold for surgical intervention in intra-articular distal radius fractures

AIMS

The aim of this study was to identify the origin and development of the threshold for surgical intervention, highlight the consequences of residual displacement, and justify the importance of accurate measurement.

METHODS

A systematic review of three databases was performed to establish the origin and adaptations of the threshold, with papers screened and relevant citations reviewed. This search identified papers investigating functional outcome, including presence of arthritis, following injury. Orthopaedic textbooks were reviewed to ensure no earlier mention of the threshold was present.

RESULTS

Knirk and Jupiter (1986) were the first to quantify a threshold, with all their patients developing arthritis with > 2 mm displacement. Some papers have discussed using 1 mm, although 2 mm is most widely reported. Current guidance from the British Society for Surgery of the Hand and a Delphi panel support 2 mm as an appropriate value. Although this paper is still widely cited, the authors published a re-examination of the data showing methodological flaws which is not as widely reported. They claim their conclusions are still relevant today; however, radiological arthritis does not correlate with the clinical presentation. Function following injury has been shown to be equivalent to an uninjured population, with arthritis progressing slowly or not at all. Joint space narrowing has also been shown to often be benign.

CONCLUSION

Knirk and Jupiter originated the threshold value of 2 mm. The lack of correlation between the radiological and clinical presentations warrants further modern investigation. Measurement often varies between observers, calling a threshold concept into question and showing the need for further development in this area. The principle of treatment remains restoration of normal anatomical position. Cite this article: Bone Joint J 2021;103-B(9):1457-1461.

Cost-effectiveness of surgery versus cast immobilization for adults with a bicortical fracture of the scaphoid waist : an economic evaluation of the SWIFFT trial

AIMS

The aim of the Scaphoid Waist Internal Fixation for Fractures Trial (SWIFFT) was to determine the optimal treatment for adults with a bicortical undisplaced or minimally displaced fracture of the waist of the scaphoid, comparing early surgical fixation with initial cast immobilization, with immediate fixation being offered to patients with nonunion.

METHODS

A cost-effectiveness analysis was conducted to assess the relative merits of these forms of treatment. The differences in costs to the healthcare system and quality-adjusted life years (QALYs) of the patients over the one-year follow-up of the trial in the two treatment arms were estimated using regression analysis.

RESULTS

Our base case analysis found that patients randomized to early surgical fixation had statistically significantly higher mean costs to the NHS of £1,295 more than for the cast immobilization arm (p < 0.001), primarily due to the cost of surgery. They also had a marginally better quality of life, over the period, of 0.0158 QALYs; however, this was not statistically significant (p = 0.379). The mean combined cost per additional QALY was £81,962, well above the accepted threshold for cost-effectiveness used in the UK and internationally. The probability of early surgery being cost-effective in this setting was only 5.6%.

CONCLUSION

Consistent with the clinical findings of SWIFFT, these results indicate that initial cast immobilization of minimally displaced scaphoid fractures, with immediate fixation only offered to patients with nonunion, is the optimal form of treatment, resulting in comparable outcomes with less cost to the healthcare system. Cite this article: Bone Joint J 2021;103-B(7):1277-1283.

Scaphoid alignment in dorsally displaced distal radial fracture: a radiographic study

We aimed to establish if fracture reduction will correct scapholunate angle in dorsally displaced distal radial fractures and to identify the relationship with other measures of distal radial position and carpal alignment. Radiographs of 131 patients with a distal radial fracture and of 50 patients with normal radiographs were reviewed. We measured the scapholunate, radiolunate, capitolunate and metacarporadial angles on the lateral views. Linear regression modelling showed that all parameters measured were significantly associated with scapholunate angle on the first radiograph following injury. Scapholunate angle increased following distal radial fracture. Reduction of the fracture improved scapholunate angle, and this was most strongly related to change in dorsal tilt. We conclude that scaphoid flexion is likely to compensate for the dorsal tilt of the lunate as an attempt to counter its dorsal tilt, and to stabilize the wrist to maintain hand function.Level of evidence: IV.

Venous thromboembolic events in hand surgery

The risks of venous thromboembolism (VTE) following total hip and knee arthroplasty have been widely published. Our aim was to investigate the recorded incidence of VTE events at the time of elective and trauma hand surgery. The UK National Hospital Episode Statistics (HES) data linking VTE events with hand surgery for the financial years 2010-2012 were analysed. The local VTE rates following hand surgical procedures were also analysed. Finally, a cost assessment of VTE thromboprophylaxis was performed according to the British Society for Surgery of the Hand (BSSH) guidelines. 334,211 hand surgical procedures were performed throughout England of which there were 13 DVT and 27 PE events. These events were seen in patients with pre-existing comorbidities. The annual incidence of VTE is 0.006% at most in hand surgical patients in England. The cost of implementing mechanical VTE thromboprophylaxis to all patients having hand surgery would amount to £6,336,641 over 2 years. The cost of treatment for all VTE events would amount to £20,418. VTE prophylaxis is probably not necessary in patients undergoing isolated elective or trauma hand surgical procedures.

Management of adults with primary frozen shoulder in secondary care (UK FROST): a multicentre, pragmatic, three-arm, superiority randomised clinical trial

BACKGROUND

Manipulation under anaesthesia and arthroscopic capsular release are costly and invasive treatments for frozen shoulder, but their effectiveness remains uncertain. We compared these two surgical interventions with early structured physiotherapy plus steroid injection.

METHODS

In this multicentre, pragmatic, three-arm, superiority randomised trial, patients referred to secondary care for treatment of primary frozen shoulder were recruited from 35 hospital sites in the UK. Participants were adults (≥18 years) with unilateral frozen shoulder, characterised by restriction of passive external rotation (≥50%) in the affected shoulder. Participants were randomly assigned (2:2:1) to receive manipulation under anaesthesia, arthroscopic capsular release, or early structured physiotherapy. In manipulation under anaesthesia, the surgeon manipulated the affected shoulder to stretch and tear the tight capsule while the participant was under general anaesthesia, supplemented by a steroid injection. Arthroscopic capsular release, also done under general anaesthesia, involved surgically dividing the contracted anterior capsule in the rotator interval, followed by manipulation, with optional steroid injection. Both forms of surgery were followed by postprocedural physiotherapy. Early structured physiotherapy involved mobilisation techniques and a graduated home exercise programme supplemented by a steroid injection. Both early structured physiotherapy and postprocedural physiotherapy involved 12 sessions during up to 12 weeks. The primary outcome was the Oxford Shoulder Score (OSS; 0-48) at 12 months after randomisation, analysed by initial randomisation group. We sought a target difference of 5 OSS points between physiotherapy and either form of surgery, or 4 points between manipulation and capsular release. The trial registration is ISRCTN48804508.

FINDINGS

Between April 1, 2015, and Dec 31, 2017, we screened 914 patients, of whom 503 (55%) were randomly assigned. At 12 months, OSS data were available for 189 (94%) of 201 participants assigned to manipulation (mean estimate 38·3 points, 95% CI 36·9 to 39·7), 191 (94%) of 203 participants assigned to capsular release (40·3 points, 38·9 to 41·7), and 93 (94%) of 99 participants assigned to physiotherapy (37·2 points, 35·3 to 39·2). The mean group differences were 2·01 points (0·10 to 3·91) between the capsular release and manipulation groups, 3·06 points (0·71 to 5·41) between capsular release and physiotherapy, and 1·05 points (-1·28 to 3·39) between manipulation and physiotherapy. Eight serious adverse events were reported with capsular release and two with manipulation. At a willingness-to-pay threshold of £20 000 per quality-adjusted life-year, manipulation under anaesthesia had the highest probability of being cost-effective (0·8632, compared with 0·1366 for physiotherapy and 0·0002 for capsular release).

INTERPRETATION

All mean differences on the assessment of shoulder pain and function (OSS) at the primary endpoint of 12 months were less than the target differences. Therefore, none of the three interventions were clinically superior. Arthoscopic capsular release carried higher risks, and manipulation under anaesthesia was the most cost-effective.

FUNDING

The National Institute for Health Research Health Technology Assessment programme.

Surgery versus cast immobilisation for adults with a bicortical fracture of the scaphoid waist (SWIFFT): a pragmatic, multicentre, open-label, randomised superiority trial

BACKGROUND

Scaphoid fractures account for 90% of carpal fractures and occur predominantly in young men. The use of immediate surgical fixation to manage this type of fracture has increased, despite insufficient evidence of improved outcomes over non-surgical management. The SWIFFT trial compared the clinical effectiveness of surgical fixation with cast immobilisation and early fixation of fractures that fail to unite in adults with scaphoid waist fractures displaced by 2 mm or less.

METHODS

This pragmatic, parallel-group, multicentre, open-label, two-arm, randomised superiority trial included adults (aged 16 years or older) who presented to orthopaedic departments of 31 hospitals in England and Wales with a clear bicortical fracture of the scaphoid waist on radiographs. An independent remote randomisation service used a computer-generated allocation sequence with randomly varying block sizes to randomly assign participants (1:1) to receive either early surgical fixation (surgery group) or below-elbow cast immobilisation followed by immediate fixation if non-union of the fracture was confirmed (cast immobilisation group). Randomisation was stratified by whether or not there was displacement of either a step or a gap of 1-2 mm inclusive on any radiographic view. The primary outcome was the total patient-rated wrist evaluation (PRWE) score at 52 weeks after randomisation, and it was analysed on an available case intention-to-treat basis. This trial is registered with the ISRCTN registry, ISRCTN67901257, and is no longer recruiting, but long-term follow-up is ongoing.

FINDINGS

Between July 23, 2013, and July 26, 2016, 439 (42%) of 1047 assessed patients (mean age 33 years; 363 [83%] men) were randomly assigned to the surgery group (n=219) or to the cast immobilisation group (n=220). Of these, 408 (93%) participants were included in the primary analysis (203 participants in the surgery group and 205 participants in the cast immobilisation group). 16 participants in the surgery group and 15 participants in the cast immobilisation group were excluded because of either withdrawal, no response, or no follow-up data at 6, 12, 26, or 52 weeks. There was no significant difference in mean PRWE scores at 52 weeks between the surgery group (adjusted mean 11·9 [95% CI 9·2-14·5]) and the cast immobilisation group (14·0 [11·3 to 16·6]; adjusted mean difference -2·1 [95% CI -5·8 to 1·6], p=0·27). More participants in the surgery group (31 [14%] of 219 participants) had a potentially serious complication from surgery than in the cast immobilisation group (three [1%] of 220 participants), but fewer participants in the surgery group (five [2%]) had cast-related complications than in the cast immobilisation group (40 [18%]). The number of participants who had a medical complication was similar between the two groups (four [2%] in the surgery group and five [2%] in the cast immobilisation group).

INTERPRETATION

Adult patients with scaphoid waist fractures displaced by 2 mm or less should have initial cast immobilisation, and any suspected non-unions should be confirmed and immediately fixed with surgery. This treatment strategy will help to avoid the risks of surgery and mostly limit the use of surgery to fixing fractures that fail to unite.

FUNDING

National Institute for Health Research Health Technology Assessment Programme.

The relationship between temperature and hip and wrist fracture incidence

INTRODUCTION

Predicting when fracture incidence will rise assists in healthcare planning and delivery of preventative strategies. The aim of this study was to investigate the relationship between temperature and the incidence of hip and wrist fractures.

METHODS

Data for adults presenting to our unit with a hip or wrist fracture over a seven and eight-year period respectively were analysed. Incidence rates were calculated and compared with meteorological records. A Poisson regression model was used to quantify the relationship between temperature and fracture rate.

RESULTS

During the respective study periods, 8,380 patients presented with wrist fractures and 5,279 patients were admitted with hip fractures. All women (≥50 years: p<0.001; <50 years: p<0.001) and men aged ≥50 years (p=0.046) demonstrated an increased wrist fracture rate with reduced temperature. Men aged <50 years also had an increased wrist fracture rate with increased temperature (p<0.001).The hip fracture rate was highest in women aged ≥50 years but was not associated with temperature (p=0.22). In men aged ≥50 years, there was a significant relationship between reduced temperature and increased fracture rate (p<0.001).

CONCLUSIONS

Fragility fracture of the wrist is associated with temperature. Compared with an average summer, an additional 840 procedures are performed for wrist fractures during an average winter in our trust with an additional 798 bed days taken up at a cost of £3.2 million. The winter increase seen in male hip fracture incidence requires approximately 888 surgical procedures, with 18,026 bed days, and costs £7.1 million. Hip fracture incidence in older women is not related to temperature.

Prospective investigation of the relationship between dorsal tilt, carpal malalignment, and capitate shift in distal radial fractures

Aims

Carpal malalignment after a distal radial fracture occurs due to loss of volar tilt. Several studies have shown that this has an adverse influence on function. We aimed to investigate the magnitude of dorsal tilt that leads to carpal malalignment, whether reduction of dorsal tilt will correct carpal malalignment, and which measure of carpal malalignment is the most useful.

Methods

Radiographs of patients with a distal radial fracture were prospectively collected and reviewed. Measurements of carpal malalignment were recorded on the initial radiograph, the radiograph following reduction of the fracture, and after a further interval. Linear regression modelling was used to assess the relationship between dorsal tilt and carpal malalignment. Receiver operating characteristic (ROC) analysis was used to identify which values of dorsal tilt led to carpal malalignment.

Results

A total of 250 consecutive patients with 252 distal radial fractures were identified. All measures of carpal alignment were significantly associated with dorsal tilt at each timepoint. This relationship persisted after adjustment for age, sex, and the position of the wrist. Capitate shift consistently had the strongest relationship with dorsal tilt and was the only parameter that was not influenced by age or the position of the wrist. ROC curve analysis identified that abnormal capitate shift was seen with > 9° of dorsal tilt.

Conclusion

Carpal malalignment is related to dorsal tilt following a distal radial fracture. Reducing the fracture and improving dorsal tilt will reduce carpal malalignment. Capitate shift is easy to assess visually, unrelated to age and sex, and appears to be the most useful measure of carpal malalignment. The aim during reduction of a distal radial fracture should be to realign the capitate with the axis of the radius and prevent carpal malalignment. Cite this article: Bone Joint J 2020;102-B(1):137–143

Effects of deprivation, ethnicity, gender and age on distal radius fracture incidence and surgical intervention rate

INTRODUCTION

Social deprivation has been shown to be associated with increased incidence of many types of fracture but the causes for this have not been established. The aim of this study was to establish if distal radius fracture was associated with deprivation and investigate reasons for this.

METHOD

Data was reviewed of 4463 adult patients who attended our Emergency Department over a four year period. The Index of Multiple Deprivation was used to measure deprivation for each patient. Modelling techniques were used to investigate the relationship between fracture rate and deprivation, gender, ethnicity and age.

RESULTS

Distal radius fracture rate was higher for patients in more deprived quintiles. Mean age in the most deprived two quintiles was 54.4 years compared to 60.1 years in the least deprived three quintiles. Modelling showed important differences between ethnic groups. Deprivation was an independent risk factor for distal radius fracture only in white patients. Deprived white women had a lower second metacarpal cortical index than women of other ethnicities suggesting increased bone fragility. Being male is a risk factor for fracture when deprivation, ethnicity and age are taken into account. Incidence rate ratio of the least deprived quintile compared to the most deprived was 0.33 (95% CI: 0.30-0.37) for white men and 0.47 (95% CI: 0.44-0.49) for white women.

CONCLUSION

Effective interventions exist to prevent further fragility fracture and this work allows geographical areas at risk to be identified. Presentation with a distal radius fracture provides an opportunity to implement interventions. In the current economic climate resources are scarce and must be used prudently. Resources should be targeted to those at risk patients from deprived areas and preventative strategies put in place.

Trends in paediatric distal radius fractures: an eight-year review from a large UK trauma unit

INTRODUCTION

This observational study investigated the incidence of distal radius fractures in children, to determine whether the rate is rising, the effect of seasonal variation on incidence and whether fracture type and rate of surgical intervention has changed, to help in determining costs for secondary care and to aid resource allocation.

MATERIALS AND METHODS

All paediatric patients(n = 6529) who sustained a distal radius fracture over an eight-year period (2007-2014) were identified. Poisson regression modelling was used to identify change in trends.

RESULTS

There was no change in distal radius fracture incidence, rate of surgical intervention (P = 0.36) or fracture type (P = 0.70). Overall incidence was 337 fractures per 100,000 patient/years. The highest fracture incidence was seen in older school boys (708 per 100,000 patient/years, P < 0.005). Overall fracture rate was lower in winter (P < 0.005). Incidence is highest in summer and the main variation is related to season.

DISCUSSION

These data can help to predict accurately the number of children presenting to the emergency department with wrist fractures depending on the time of year.

Comparative Biomechanical Characteristics of Modified Side-to-Side Repair and Modified Pulvertaft Weaving Repair - In vitro Study

BACKGROUND

Strong surgical repair is the mechanical basis of early mobilization and prerequisite for biological healing following tendon grafting. Side to side and pulvertaft repairs were developed to meets these demands. However, these techniques have later been modified to improve the strength of repair but their characteristics have not been compared.

METHODS

We compared biomechanical strength of the modified side-to-side (SS) repair with the modified Pulvertaft (PT) repair technique in turkey tendons keeping overlap length, anchor points, type of suture, suture throw and amount of suture similar. Two investigators performed 34 repairs during one summer month to test the tensile strength of the repair using mechanical strength testing machine. Variables measured were maximum load, load to first failure, modulus, load at break, mode of failure, site of failure, tensile strain, tensile stress. The statistical comparison was carried by Levene's test and T test for means.

RESULTS

The mean maximum load for modified SS repair was 50.3 (SD 13.7) N and modified PT repair was 46.9 (SD 16.4) N. The tensile stress at maximum load for SS and modified PT repair was 4.7 (SD 4) MPa and 4.2 (SD 3) MPa respectively. The suture cut through was the commonest mode of failure.

CONCLUSIONS

We found no statistical difference between 2 repairs in load at which they started failing (p = 0.16), and maximum load repairs could withstand (p = 0.35). Our study uniquely compares two techniques under standard conditions, and contrary to existing evidence found no difference. However, in our opinion the number of anchor points may have a greater impact than number of weaves on the strength.

The effect of mean annual temperature on the incidence of distal radial fractures

We investigated the relationship between the incidence of distal radial fractures and mean annual temperature. Data for all adult patients presenting to our unit with a distal radial fracture from 2007-2014 were analysed. Incidence rates were compared with meteorological records. A Poisson regression model was used to analyse trends. Distal radial fractures were sustained by 8831 adults. The only significant change in fracture incidence occurred in 2010, in women only. This was the coldest year in the United Kingdom for over 20 years. Analysis by age bands during 2010 showed fracture incidences were significantly higher for women aged 40-69 with a higher percentage of injuries occurring in the street. These women are likely to remain mobile during bad weather but frequently have underlying osteoporosis. Falls prevention programmes should address this group with specific strategies. Simple measures, such as walking aids, appropriate footwear and avoidance of non-essential travel in slippery conditions, may reduce risk. Level of evidence: IV.

Epidemiology of distal radius fractures in a geographically defined adult population

Distal radial fractures are the most common adult orthopaedic fracture. We sought to determine whether the incidence of this injury is changing and identify trends in its occurrence. We analysed data for all adult patients presenting to University Hospitals of Leicester with a distal radial fracture from 2007-2016. Incidence rates were calculated using United Kingdom population data. Poisson regression techniques were used to analyse weekly, seasonal and annual variation in fracture incidence. There was no significant change in average age or incidence of fracture. Increased incidence was associated with inclement weather conditions. Younger patients more commonly sustain fractures on weekends. We predict a 23% rise in the number of fractures in the United Kingdom in the next 20 years. The incidence of fracture does not appear to be changing, although the number of fractures is growing. Weekly and seasonal trends are apparent. Level of evidence: III.

Fasciectomy for Dupuytren Contracture

This article discusses limited fasciectomy for Dupuytren contracture, reviews the literature to list common complications, addresses the observations that need to be made after surgery, and systematically reviews the literature for 2 clinical questions: (1) regarding leaving wounds open and (2) the use of postoperative splintage.

Interventions to improve retention in a surgical, clinical trial: A pragmatic, stakeholder-driven approach

OBJECTIVE

To explore stakeholder perspectives upon participant retention in clinical trials, and to generate strategies to support retention in a surgical, clinical trial.

STUDY DESIGN AND SETTING

The SWIFFT trial is a multicenter study comparing treatments for the fracture of the waist of the scaphoid bone in adults. Here we report upon a multistage, iterative consultative process with SWIFFT stakeholders, these include workshops with members of the public, with nurses involved in data collection, and with consultant clinicians. Structured discussions were digitally recorded and transcribed, data were handled and analyzed following a framework approach to qualitative data analysis.

RESULTS

Removing practical barriers were identified as important factors in supporting retention. Stakeholders also identified that (i) how well a study is understood and (ii) how much it is valued are important factors in an individual's willingness to maintain their involvement. A number of strategies resulted from this consultation, these include: in-clinic data collection, co-ordinated clinical and research appointments, a SWIFFT website, and newsletter.

CONCLUSION

A participatory approach to trial retention might engage all relevant stakeholders in the delivery of a clinical trial, it might also support the generation of specific and contextually relevant solutions to the challenge of participant retention.

Effect of patient safety incident review and reflection in an extended morbidity and mortality meeting

BACKGROUND

We modified the departmental mortality and morbidity (M&M) meetings to evaluate whether patient safety incident review as a part of this meeting was associated with reduced patient safety incidents.

METHOD

A pilot programme of peer review of patient safety incidents (PSI) supported by education relevant to that event and follow-on action plan was introduced as a part of an extended morbidity and mortality meeting in a university hospital orthopaedic department. The pilot programme was conducted over six months (January 2012-June 2012). This programme involved junior and senior doctors including consultants although multidisciplinary groups were invited to attend. We investigated PSI rate/1000 hospital admissions for trauma and elective surgery, which were collected prospectively and independently between Jan 2011 to June 2013. We noted if the incident was caused by a medical or a nursing error and compared PSI rates.

RESULTS

Rates of PSI (33/1000) were 7.8 times higher in trauma cases (80.2/1000) than in elective admissions (11.2/1000). There was 18% reduction in trauma and 27% reduction in planned elective admissions. The rate increased after the pilot programme finished but there was still a 7% reduction compared to the pre-pilot period. This study found a significant reduction in the PSI rate for medical error but no change in the rate of nursing error.

CONCLUSION

This continuous reflection, education and action process, where safety events are reviewed as a part of the extended morbidity and mortality meeting, is associated with reduction of patient safety incidents. We recommend that PSI reflection should be introduced in Mortality and Morbidity meetings with mandated attendance of the entire multidisciplinary health care team.

Dynamic assessment of the wrist after total wrist arthroplasty

Our aim was to assess the outcome in patients with total wrist arthroplasty performed for end stage wrist osteoarthritis. We analysed the ranges of motion of operated and un-operated wrists using a flexible electrogoniometer during the Sollerman hand function test. We assessed grip strength with a digital dynamometer and completed patient reported outcome scores more than one year post-operatively. We reviewed 12 patients with a mean age of 64 (range 48-82) years. The flexion-extension arc was 72% and radioulnar deviation arc was 53% of the un-operated side but the total range of motion (area of circumduction) was 43% of the un-operated side and only 20% of the circumduction in age and gender-matched normal volunteers. Peak grip strength was 68% of the un-operated side. The patients reported good outcome with mean Michigan Hand Questionnaire (MHQ) scores of 56 (range 25-84) and mean Patient Evaluation Measure (PEM) scores of 39 (range 20-68). Patients completed the activities of Sollerman hand function test in twice the time (6 min) as required for a normal volunteer (2.8 min). The circumduction ellipses were narrow and central with limited radio-ulnar deviation and small mean areas of motion during activities of daily living.

Electrogoniometer measurement and directional analysis of wrist angles and movements during the Sollerman hand function test

STUDY DESIGN

Clinical measurement.

INTRODUCTION

To investigate the characteristics of wrist motion (area, axis, and location) during activities of daily living (ADL) using electrogoniometry.

METHODS

A sample of 83 normal volunteers performed the Sollerman hand function test (SHFT) with a flexible biaxial electrogoniometer applied to their wrists. This technique is accurate and reliable and has been used before for assessment of wrist circumduction in normal volunteers. A software package was used to overlay an ellipse of best fit around the 2-dimensional trace of the electrogoniometer mathematically computing the area, location, and axis angle of the ellipse.

RESULTS

Most ADL could be completed within 20% of the total area of circumduction (3686°° ± 1575°°) of a normal wrist. An oblique plane in radial extension and ulnar flexion (dart-throwing motion plane) was used for rotation (-14° ± 32°) and power grip tasks (-29° ± 25°) during ADL; however, precision tasks (4° ± 28°), like writing, were performed more often in the flexion extension plane. In the dominant hand, only 2 power tasks were located in flexion region (cutting play dough [ulnar] and pouring carton [radial]), precision tasks were located centrally, and rotation and other power tasks were located in extension region.

DISCUSSION

This study has identified that wrist motion during the ADL requires varying degrees of movement in oblique planes. Using electrogoniometry, we could visualize the area, location, and plane of motion during ADL. This could assist future researchers to compare procedures leading to loss of motion in specific quadrants of wrist motion and its impact on patient's ability in performing particular ADL. It could guide hand therapists to specifically focus on retraining the ADL that may be affected when wrist range of motion is lost after injury.

LEVEL OF EVIDENCE

Diagnostic level III.

Comparison of distal radius fracture intra-articular step reduction with volar locking plates and K wires: a retrospective review of quality and maintenance of fracture reduction

This study investigated the accuracy and maintenance of reduction of intra-articular steps achieved with closed reduction and percutaneous K wires and open reduction and a volar locking plate for the treatment of intra-articular distal radius fractures. We performed a retrospective review of 359 patients with an intra-articular fracture of their distal radius. Multivariate linear regression was undertaken to investigate the influence of multiple variables such as age, gender, initial displacement and treatment method on reduction despite differences between groups. A total of 36% of patients treated with K wires and 29% with volar locking plate had a step greater than or equal to 1 mm present on the first post-operative radiograph. A total of 23% treated with K wires and 28% with volar locking plate had a residual step of 1 mm or more on the last available radiograph. There was no difference identified between the two techniques for quality of initial reduction or persisting step on the last available radiographs. Step behaviour and further reduction of step post-operatively was similar for both treatment methods. Initial displacement and increased age influenced initial reduction. Initial fracture displacement shown radiologically was the only variable identified that influenced the persistence of a step on post-operative radiographs.

LEVEL OF EVIDENCE

IV.

Risk of hip fracture following a wrist fracture-A meta-analysis

AIMS

This purpose of this meta analysis was to investigate and quantify the relative risk of hip fracture in patients who have sustained a wrist fracture.

METHOD

Studies were identified by searching Medline, Embase, Cochrane CENTRAL database and CINAHL from their inception to August 2015. Studies reporting confirmed hip fracture following wrist fracture were included. Data extraction was carried out using a modified Cochrane data collection form by two reviewers independently. Quality assessment was carried out using a modified Coleman score and the Newcastle Ottawa scale for cohort studies. An assessment of bias was performed for each study using a modified Cochrane Risk of Bias tool. A pooled relative risk(RR) was estimated with 95% CI from the RR/HRs and CIs reported in the studies.

RESULTS

12 studies were included in the final meta-analysis (4 male, 8 female only). Relative risk of hip fracture following wrist fracture for women was 1.43 (CI 1.27 to 1.60). In men it was not significantly increased (RR 2.11, 95% CI: 0.93-4.85). Heterogeneity was low (I squared 0%) for both groups so a fixed effects model was used.

CONCLUSION

Risk of a subsequent hip fracture is increased for women who suffer a wrist fracture (RR 1.43). Resources and preventative measures should be targeted towards these high risk patients to prevent the catastrophic event of a hip fracture. This meta analysis confirms and quantifies the increased relative risk of hip fracture after wrist fracture in women.

Carpal Tunnel Decompression. Is Lengthening of the Flexor Retinaculum Better than Simple Division?

This prospective randomized double-blind control trial compared lengthening and simple division of the flexor retinaculum in carpal tunnel decompression. Twenty-six patients with bilateral carpal tunnel syndrome were randomly allocated to have the flexor retinaculum divided on one side and lengthened on the other. All 52 hands were reviewed at regular intervals up to 25 weeks. The patients, therapists and the final reviewer were unaware of treatment allocation. The Levine symptom and function scores were used to assess the severity of the carpal tunnel syndrome and showed that the two treatments were comparable for relief of carpal tunnel symptoms. The two treatments were also similar for function measured with the Jebsen–Taylor test. There is no identifiable benefit in lengthening the flexor retinaculum when decompressing the carpal tunnel. Moderate or severe pillar and scar pain is common, occurring in 13 of 52 hands after surgery, but only in four by the 12th week and two by the 25th week.

Comparison of activities of daily living after proximal row carpectomy or wrist four-corner fusion

Proximal row carpectomy and four-corner fusion are commonly used in the patients with scaphoid nonunion advanced collapse or scapholunate advanced collapse. We compared activities of daily living of the 24 patients after proximal row carpectomy with 24 patients with four-corner fusion procedures using the modified Sollerman hand function test and Michigan Hand Questionnaire. Most tasks were performed significantly quicker by the patients after proximal row carpectomy. The patients after proximal row carpectomy reported better function during activities of daily living.

LEVEL OF EVIDENCE

Level III, Therapeutic Study.

Outcome Measurement in Hand Surgery: Report of a Consensus Conference

This is a report of the second conference on Outcomes of Hand Surgery that took place at the Pulvertaft Hand Centre, Derby on the 19th-20th May 2001. The first meeting took place in 1993 and the discussions of this meeting led to the publication of a paper (Macey, 1995). The group participating in the second conference comprised surgeons, therapists, researchers, psychologists and a health economist (see Appendix I). The aim of this report is not to give a comprehensive and fully referenced overview, but to provide a summary of the key issues for consideration and to put forward some current views on the topic of outcome measurement in the field of Hand Surgery.

Carpal Tunnel Syndrome and Work

The incidence, age at presentation, disability and outcome after surgery were investigated in 327 consecutive women of working age presenting to a hand unit with carpal tunnel syndrome. Two hundred and seventeen were working, 55 of these in repetitive occupations. One hundred and ten were not in employment. All three groups had similar mean ages (around 46 years). On a population basis more women in non-repetitive occupations presented with carpal tunnel syndrome (220/100,000/year) than those in repetitive work (122/100,000/year) or those not working (129/100,000/year), and more were offered surgery (82% versus 67% for those in repetitive work and 58% for those not working). However, symptoms and disability; as assessed with the Michigan Hand Questionnaire and the SF-12, were less severe in working women. This study suggests that working in repetitive or non-repetitive occupations does not cause, aggravate or accelerate carpal tunnel syndrome. Working women may struggle to accommodate their symptoms compared to women who are not in employment causing more to seek help.

A review of Hand Surgery Provision in England

This study reviews hand surgical activity and the resources available for provision of hand surgery in England in 2001. Operation rates for three common procedures, viz. carpal tunnel release, Dupuytren’s surgery and ganglion surgery, were considered. The local population and the number of hand surgeons in each NHS Hospital Trust were compared. We identified 275 consultant surgeons with an interest in hand surgery working in the NHS in England. Approximately two-thirds were orthopaedic surgeons, almost one-third were plastic surgeons and a small number were accident and emergency surgeons. Half of all hand surgeons worked in large units, with three or more hand surgeons, but almost 20% of hand surgery was delivered in hospitals in which there was no surgeon with a declared interest in hand surgery. Surgery rates for Dupuytren’s contracture varied from 0.04 to 0.36 cases per 1,000 population per annum and for carpal tunnel syndrome varied from 0.25 to 1.31 cases per 1,000 per annum. We found a correlation between rates of surgery and the number of hand surgeons, locally. A recent audit ( Burke, Dias, Heras-Pelou, Bradley, & Wildin, 2004 . Providing care for hand disorders, a reappraisal of need. Journal of Hand Surgery, 29B: 575–579.) has suggested that one hand surgeon is required to meet the needs of a population of 125,000, with a national requirement for 393 hand surgeons. We conclude that there are insufficient hand surgeons in England and believe that the wide local variations in hand surgery rates are indicative of a significant unmet demand for hand surgery in the English population.

Providing Care for Hand Disorders a Re-Appraisal of Need

An audit of hand surgery activity in Derby during the period 1989–1990 produced manpower and resource recommendations for the speciality per 100,000 of population per year for the United Kingdom. The decade that followed the audit has seen major changes in health care provision, including reduced service activity by trainee doctors through restricted hours of work and less unsupervised surgery. A further audit of hand surgery activity was performed during 2000–2001 to assess the effects of these and other changes. This showed that there has been a 2% rise in trauma attendances, though trauma bed utilization had reduced by 12% and surgery time by 38%. Trauma out-patient visits had also reduced by 11%. Day-case trauma surgery rates were virtually unchanged at 63%. Women attend more frequently with traumatic hand injuries than they did 10 years ago and there is arising incidence of hand injuries in the home, with a falling incidence at work. Elective referrals have risen by 36% and operations by 34%. The top ten diagnoses relate to the same conditions although their rankings have changed. Elective day-case surgery rates have risen from 64% to 94% over the decade. The 34% increase in elective operations has been absorbed within a 5% reduction in elective bed use and a 23% reduction in surgery time. Elective out-patient visits have also dropped 14% overall. This audit indicates that in 2000–2001 one whole time equivalent hand surgeon can service a population of 125,000. The national requirement for a 56 million population would be 448 whole time equivalent hand surgeons.

Extrinsic versus intrinsic hand muscle dominance in finger flexion

This study aims to identify the patterns of dominance of extrinsic or intrinsic muscles in finger flexion during initiation of finger curl and mid-finger flexion. We recorded 82 hands of healthy individuals (18-74 years) while flexing their fingers and tracked the finger joint angles of the little finger using video motion tracking. A total of 57 hands (69.5%) were classified as extrinsic dominant, where the finger flexion was initiated and maintained at proximal interphalangeal and distal interphalangeal joints. A total of 25 (30.5%) were classified as intrinsic dominant, where the finger flexion was initiated and maintained at the metacarpophalangeal joint. The distribution of age, sex, dominance, handedness and body mass index was similar in the two groups. This knowledge may allow clinicians to develop more efficient rehabilitation regimes, since intrinsic dominant individuals would not initiate extrinsic muscle contraction till later in finger flexion, and might therefore be allowed limited early active motion. For extrinsic dominant individuals, by contrast, initial contraction of extrinsic muscles would place increased stress on the tendon repair site if early motion were permitted.

Timed Sollerman hand function test for analysis of hand function in normal volunteers

This study describes the development and application of the timed Sollerman hand function test in normal volunteers and the effect of age, gender, dominance and handedness on hand function. A total of 100 volunteers (50 men and 50 women) aged between 20 to 70 years were asked to complete the Sollerman hand function test. We measured the time taken to complete the 20 tasks using seven grips. Volunteers completed the tasks a mean of 20 seconds quicker with the dominant than with the nondominant hand. Individuals who are strongly right-handed showed a pronounced difference taking less time with the dominant hand. Women took less time to complete all tasks in age groups 30 to 40 years, than women in age groups 20 to 30 years and beyond 40 years using the dominant hand. Men also showed worsening performance with age. The centile curves of the total time taken to complete all 20 Sollerman tasks between the ages of 20 to 70 years will allow investigators to adjust their findings for age before attributing observed differences to disease or its treatment.

Dynamic assessment of wrist after proximal row carpectomy and 4-corner fusion

PURPOSE

To investigate the effect of 4-corner fusion (4CF) or proximal row carpectomy (PRC) on wrist motion, strength, and outcome for 2 different cohorts from 2 separate institutions performing either 4CF or PRC for stage 2/3 scaphoid nonunion advanced collapse and scapholunate advanced collapse.

METHODS

The researchers assessed 46 subjects (24 4CF and 22 PRC), mean age 54 years, with a flexible electrogoniometer to measure maximum wrist motion and circumduction and compare it with the nonsurgical wrist. We analyzed the shape, size, rate, and smoothness of the circumduction curves. We assessed the maximum grip and sustainability of grip for 60 seconds using a digital grip analyzer. Patient evaluation measure and Michigan Hand Questionnaires measured patient-reported outcomes.

RESULTS

Flexion-extension in the surgically treated wrist was 50% of the nonsurgical side after a 4CF and 65% after a PRC. The radioulnar deviation component in circumduction of the surgically treated wrist was similar but markedly decreased after either procedure. The mean area of circumduction of the surgically treated wrist was similar after a PRC and a 4CF but was 30% of the nonsurgical wrist. The center of the circumduction ellipse after a PRC was closer than after a 4CF to the opposite wrist. The orientation of the plane of circumduction was 22° to the vertical flexion-extension plane after a PRC. After a 4CF, the plane was more vertical (9°). The peak grip strength and the area under the force time curve was 80% of the nonsurgical side after a PRC and 60% after a 4CF. The Michigan Hand Questionnaire result was 90% of the score for the nonsurgical hand after a PRC and 75% of score for the nonsurgical hand after a 4CF.

CONCLUSIONS

The PRC provided improved flexion-extension with a circumduction curve concentric with the nonsurgical wrist. The 4CF limited extension and ulnar deviation more than did a PRC.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Effect of triggering and entrapment on tendon gliding properties following digital flexor tendon laceration: in vitro study on turkey tendon

The optimal management of partial flexor tendon laceration is controversial and remains a clinical challenge. Abnormal tendon gliding (triggering and entrapment) was assessed at the A2 pulley in 40 turkey tendons in three groups: intact, partially divided (palmar or lateral), and trimmed. Testing was of gliding resistance and friction coefficient at 30° and 70° of flexion, loaded with 2 and 4 N. We observed for triggering and entrapment. The changes in gliding properties were compared and analysed using Wilcoxon matched pair testing. A significant difference was found in the change in gliding properties of intact to lacerated and lacerated to trimmed tendons and between tendons that glided normally compared with those exhibiting triggering or entrapment. This suggests that palmar and lateral lacerations which, through clinical examination and visualization, are found to glide normally should be treated with early mobilization. However, partial lacerations that exhibit triggering or entrapment should be trimmed.

Complications after volar locking plate fixation of distal radius fractures

Volar locking plates are an increasingly popular treatment for distal radius fractures. We reviewed complications observed after volar locking plate fixation in a busy teaching hospital. The purpose of the study was to assess whether complication rates after volar locking plate use in general, routine trauma practice were higher than published literature from expert users. A retrospective review was carried out of patients treated with a volar locking plate between January 2009 and December 2010. The series included 206 procedures in 204 patients (77 males and 127 females) with mean age of 55 years (range 16-94). Surgery was performed by 18 different consultant surgeons and 11 registrars. A total of 22 complications were observed in 20 patients with an overall complication rate of 9.7%. Seven (3.4%) patients developed tendon problems including four (1.9%) tendon ruptures. Four (1.9%) patients required re-operation for metalwork problems; four patients developed complex regional pain syndrome (CRPS). Three fracture reduction problems were noted. A total of 16 further operations were carried out for complications. The overall complication rate was low even when surgery was done by many surgeons, suggesting that this is a safe and reproducible technique. This study provides information which can be used to counsel patients about risks, including those of tendon and metalwork problems. This allows patients to make an informed decision. Surgeons must have specific strategies to avoid these complications and remain vigilant so that these can be identified and managed early.

Patterns of recontracture after surgical correction of Dupuytren disease

PURPOSE

To study the evolution of deformity of the proximal interphalangeal joint over 5 years after good surgical correction of Dupuytren-induced contracture.

METHODS

We assessed 63 patients (72 fingers; 69 hands) with Dupuytren disease for the degree of contracture, its correction after surgery, and the range of movement at the proximal interphalangeal joints at 3 and 6 months, and 1, 3, and 5 years after fasciectomy with or without the use of a firebreak graft. We investigated associations between the recurrence of contracture and preoperative patient and surgical factors.

RESULTS

There were 4 patterns of evolution of contracture after surgical correction. A total of 31 patients (33 hands) showed good improvement that was maintained for 5 years (minimal recontracture group). Twenty patients (23 hands) showed good initial improvement, which mildly worsened (< 20°) but was then maintained over 5 years (mild early recontracture group). Four patients (5 hands) worsened in first 3 months after surgery (> 20°) but there was no further worsening (severe early recontracture group). Eight patients (8 hands) worsened progressively over 5 years (progressive recontracture group). Worsening of contracture more than 6° between 3 and 6 months after surgery predicted progressive recontracture at 5 years.

CONCLUSIONS

Recurrence of contracture (not disease recurrence) could be predicted as early as 6 months after surgery for Dupuytren disease.

Union rates after proximal scaphoid fractures; meta-analyses and review of available evidence

We carried out a comprehensive analysis of publications to investigate long term union rates of acute proximal scaphoid fractures. Of 1147 acute scaphoid fractures managed nonoperatively that were available for analysis, 67 (5.8%) were proximal. Amalgamating publications revealed that 34% of acute proximal scaphoid fractures progress to nonunion when managed nonoperatively. A meta-analysis showed that the relative risk of nonunion for these fractures is 7.5 compared with more distal fractures, also managed nonoperatively. More trials are needed to allow direct comparison of acute proximal scaphoid fractures managed operatively and nonoperatively. Power calculations indicate that 76 cases will need to be recruited for such a study. Currently, the proximal scaphoid is defined inconsistently. To avoid misclassification we suggest the region is defined as the proximal fifth of the bone, and computer tomography is used during follow-up.

Grip strength characteristics using force-time curves in rheumatoid hands

The use of force-time curves in rheumatoid hands was investigated to assess peak force, average force, total grip time, area under the curve, and variability of the plateau region of the curves to identify the impact of different rheumatoid hand deformities on grip strength. We studied 43 patients - 10 men and 33 women - with established rheumatoid arthritis affecting their hands. Mean age was 61 years and mean duration of hand involvement was 13 years. Of the 86 hands, 38 had no finger deformity, eight had metacarpophalangeal joint ulnar deviation without any additional finger deformities, 16 had swan neck deformities, and 10 had boutonnière deformities. Fourteen hands had a combination of deformities. The hands with combined deformities were the weakest, had poor grip strength (34.7 N, SE 8), and were able to sustain grip for only a short time (22 sec, SE 3). Swan neck deformity also profoundly affects the magnitude (49.8 N, SE 7) and sustainability of grip (15 sec, SE 2). Even when only one finger had a swan neck deformity the mean strength was poor at 45 N. Swan neck deformity causes greater loss of strength than boutonnière deformity (82.7 N, SE 15). The strongest rheumatoid hands were those with only ulnar deviation deformities (90.8 N, SE 14). The area under the curve best predicted disability assessed using the Patient Evaluation Measure.

Assessment of velocity, range, and smoothness of wrist circumduction using flexible electrogoniometry

PURPOSE

To quantify the range, velocity, and smoothness of wrist circumduction, to explore the oblique functional plane of wrist circumduction, and to establish the reproducibility and reliability of these measures.

METHODS

Forty healthy subjects with a mean age of 43 years and without a history of wrist pathology or pain participated in this study. We used a flexible electrogoniometer with a twin-axis sensor to measure the relative angles between the 2 end blocks while the subject performed maximum excursion of flexion-extension, radioulnar deviation, and circumduction of the wrist held in a standardized, fully pronated position. A software package was used to further analyze the characteristics of the circumduction curve or oval such as the mean area (designated as degree-degree or oo) shape, size, rate, smoothness, and orientation.

RESULTS

The mean area of circumduction (4729 [degree-degree]) and circumference (265°) of the circumduction curve indicated the total range of circumduction. The velocity of circumduction (mean 179°/s) and the time (1.6 second) taken to complete 1 cycle of circumduction were similar in both hands. The 4 quadrants for the velocity of circumduction showed that the velocity was faster in the radioulnar deviation quadrants compared with flexion and extension. Quadrant analysis showed the smoothness was greater in the radioulnar deviation quadrants than in the flexion and extension quadrants. The oblique planes of the circumduction curves of all the normal wrists lie in ulnopalmar and radiodorsal direction with a mean angle of 28° to the vertical flexion and extension plane.

CONCLUSIONS

This technique was accurate and reliable in measuring the velocity, range, and smoothness of wrist circumduction.