Ten years follow-up of health and disability in people with acute traumatic hand injury: pain and cold sensitivity are long-standing problems

Flexor Injury Rehabilitation Splint Trial (FIRST): protocol for a pragmatic randomised controlled trial comparing three splints for finger flexor tendon repairs

BACKGROUND

Without surgical repair, flexor tendon injuries do not heal and patients' ability to bend fingers and grip objects is impaired. However, flexor tendon repair surgery also requires optimal rehabilitation. There are currently three custom-made splints used in the rehabilitation of zone I/II flexor tendon repairs, each with different assumed harm/benefit profiles: the dorsal forearm and hand-based splint (long), the Manchester short splint (short), and the relative motion flexion splint (mini). There is, however, no robust evidence as to which splint, if any, is most clinical or cost effective. The Flexor Injury Rehabilitation Splint Trial (FIRST) was designed to address this evidence gap.

METHODS

FIRST is a parallel group, superiority, analyst-blind, multi-centre, individual participant-randomised controlled trial. Participants will be assigned 1:1:1 to receive either the long, short, or mini splint. We aim to recruit 429 participants undergoing rehabilitation following zone I/II flexor tendon repair surgery. Potential participants will initially be identified prior to surgery, in NHS hand clinics across the UK, and consented and randomised at their splint fitting appointment post-surgery. The primary outcome will be the mean post-randomisation score on the patient-reported wrist and hand evaluation measure (PRWHE), assessed at 6, 12, 26, and 52 weeks post randomisation. Secondary outcome measures include blinded grip strength and active range of movement (AROM) assessments, adverse events, adherence to the splinting protocol (measured via temperature sensors inserted into the splints), quality of life assessment, and further patient-reported outcomes. An economic evaluation will assess the cost-effectiveness of each splint, and a qualitative sub-study will evaluate participants' preferences for, and experiences of wearing, the splints. Furthermore, a mediation analysis will determine the relationship between patient preferences, splint adherence, and splint effectiveness.

DISCUSSION

FIRST will compare the three splints with respect to clinical efficacy, complications, quality of life and cost-effectiveness. FIRST is a pragmatic trial which will recruit from 26 NHS sites to allow findings to be generalisable to current clinical practice in the UK. It will also provide significant insights into patient experiences of splint wear and how adherence to splinting may impact outcomes.

TRIAL REGISTRATION

ISRCTN: 10236011.

Management of everyday life after a hand operation-A qualitative study of patients with a weak sense of coherence

BACKGROUND

A hand-related disorder (HRD) has a more significant impact on participation in everyday life for patients with a weak sense of coherence (SOC) compared to those with a strong SOC. Therefore, understanding how patients with a weak SOC manage the conditions of everyday life after a hand operation is of clinical interest.

PURPOSE

This study aimed to explore how patients with a weak SOC experience and manage the conditions of everyday life after an operation for an HRD.

STUDY DESIGN

A qualitative design with a hermeneutic approach.

METHODS

An in-depth interview was conducted with each of eight adults-five women and three men-with an HRD and a weak SOC (SOC-13 score <52). Participants with varying HRDs were interviewed once between six and 13 weeks after the hand operation. Data were analyzed based on a hermeneutic approach.

RESULTS

The analyses resulted in five themes: even more conditions to handle, challenges in everyday life, managing everyday life, different expectations, and the influence of information on everyday life. The lives of most participants were significantly impacted: they experienced a range of difficulties managing their activities and roles after their operation. The participants felt uncertain about managing everyday life and the future and expressed unfulfilled expectations for different reasons. All wanted individualized information about what to expect.

CONCLUSIONS

Participants had several conditions in life that challenged their everyday lives, and the HRD made their everyday lives even more challenging. The extent to which they felt affected appeared to relate to their perception of their presurgery activities. They had several strategies to manage everyday life but used these to varying extent. Their expectations about the outcome had both positive and negative effects on their ability to manage everyday life, and individually adapted information was requested about what to expect and how to cope with everyday life after the surgery.

Reliability and clinical utility of a novel telehealth-based goniometry approach to measure range of motion of the digits of the hand

BACKGROUND

Range of motion (ROM) is an outcome measure commonly used when treating acute and chronic hand injuries and conditions. Increased adoption of telehealth service provision in hand therapy practice, influenced by the advent of COVID-19, has led to the need for a valid and reliable approach to measure the range of motion of the digits of the hand when providing hand therapy services using telehealth.

PURPOSE

To determine if performing manual goniometry during a livestream teleconsultation is reliable and clinically useful to measure the range of motion of the fifth digit when providing hand therapy services using telehealth.

STUDY DESIGN

Clinical measurement, repeated-measures study.

METHODS

According to a measurement protocol, 12 independent raters (who currently provide hand therapy services) each obtained several screen-based goniometric range of motion measurements of the fifth digit at 2-time points. Raters were surveyed on the clinical utility of the telehealth-based goniometry approach. Measures of relative and absolute reliability were calculated to evaluate test-retest and inter-rater reliability. Free-text responses were analyzed using content analysis.

RESULTS

Inter-rater reliability was excellent for all flexion and extension measures (intraclass correlation coefficient [ICC] ≥ 0.89) but poor for the arc of motion (ICC ≤ 0.67). Test-retest reliability was poor (ICC ≤ 0.43). No statistically significant differences between test and retest measurements were observed (P ≥ 0.24). The overall coefficient of variation indicated good precision (14.69%). Measurement error (≤6.07º) and limits of agreement (≤6.33) had acceptable levels to support clinical use. Content analysis revealed several practical considerations.

CONCLUSIONS

This study suggests that performing manual goniometry during a livestream teleconsultation is unreliable for measuring the range of motion of the fifth digit. However, when combined with patient-reported and functional outcomes, this approach may be suitable to facilitate a range of motion assessment for certain functions of telehealth service provision in hand therapy practice.

Evidence of internal construct validity of SOC-13 total score, for use in hand therapy

PURPOSE

The objective was to examine whether the 13-item Sense of coherence scale (SOC-13) can be reported as a unidimensional interval-scale metric, when new approaches based on the Rasch model to address local item dependency are applied, and to determine whether an interval-scale scoring can be made available.

METHODS

Data were derived from two samples of patients with hand-related disorders (merged n = 915). Rasch analyses of the SOC data were conducted using item-level analysis and a testlet approach.

RESULTS

Initial item-level analysis of the SOC-13 confirmed previous findings of misfit to the Rasch model. In resolving local dependency by constructing three testlets, which corresponded to the three components of the SOC construct, fit to the Rasch model (χ2(df) = 43.11 (27), p = 0.163) and unidimensionality of the SOC-13 could be established. A transformation table was successfully created to convert the SOC-13 raw ordinal score to corresponding Rasch interval-scaled values.

CONCLUSIONS

The results of this study indicate that data obtained by the SOC-13 can be regarded as essentially unidimensional, and an interval-scale transformation table of the SOC-13 total scores was developed, for use in clinical practice and research on coping resources in patients with hand-related disorders.

Managing cold intolerance after hand injury: A systematic review

OBJECTIVES

This systematic review seeks to understand whether cold intolerance (CI) improves with time and if there is any role for management strategies such as behavioural therapy, surgery, or pharmacotherapy.

METHODS

Two independent reviewers used a predefined search strategy to query MEDLINE, PubMed, Embase, CINAHL, Cochrane Library, Web of Science and Google Scholar databases. Articles written in English, Studies of interventions (such as pharmacotherapy or behavioural therapy) for cold intolerance in adult patients with a history of hand injury along with prevalence over time were included for review.

RESULTS

Seventeen studies were included, with twelve prognostic studies of the effect of time on CI, four studies of self management/behavioural therapies, and a single study of surgical treatment of neuromas. No studies of pharmacotherapies were identified for inclusion in the hand injury literature. Most studies (76.4%) were either prevalence or prospective cohort studies; no level I or II evidence studies were included.

CONCLUSIONS

Cold intolerance does not resolve over time for the vast majority of patients. Behavioral and self-management studies have low efficacy and studies presented had a high risk of bias. There is a lack of evidence for the use of pharmacotherapy in CI and this could be considered for future studies.

Relieving Pressure on the Emergency Department with a New Treatment Pathway for Hand Trauma Patients – A Three-Year Experience with 15,539 Patients

Background: Hand injuries are a significant and rising burden on the Emergency Department (ED), often leading to protracted waiting times for patients awaiting specialist input. To combat this, a new treatment pathway for hand trauma was introduced at our institution to reduce waiting times and pressure on the ED.

Methods: The treatment pathway performance using waiting times, length of stay and cost metrics was measured prior to and following the introduction of a new treatment pathway.

Results: There were 15,539 patients reviewed in total. After the new pathway had been introduced, the number of assessments in ED significantly reduced (Year 1: 907 [19.9%] vs. Year 2: 422 [7.9%]; p < 0.001), and the proportion of patients who had an operation on the same day that they were assessed significantly increased (69 [1.5%] vs. 403 [7.5%] patients; p < 0.001). The median waiting time from assessment to operation and length of stay also significantly reduced following the introduction of the treatment pathway (Year 1: 53 hours and Year 2: 45 hours; p < 0.001).

Conclusions: Our data over 3 years shows that these changes have been maintained and, in some cases, have continued to improve since the introduction of the new treatment pathway. We advocate the use of such an approach for all hand trauma centres worldwide to replicate these improvements in patient care.

Level of Evidence: Level III

Effectiveness of 3D-printed orthoses for traumatic and chronic hand conditions: A scoping review

Background

In the field of orthotics, the use of three-dimensional (3D) technology as an alternative to the conventional production process of orthoses is growing.

Purpose

This scoping review aimed to systematically map and summarize studies assessing the effectiveness of 3D-printed orthoses for traumatic and chronic hand conditions, and to identify knowledge gaps.

Methods

The Cochrane Library, PubMed, EMBASE, CINAHL, Web of Science, IEEE, and PEDro were searched for studies of any type of 3D-printed orthoses for traumatic and chronic hand conditions. Any outcome related to the effectiveness of 3D-printed orthoses was considered. Two reviewers selected eligible studies, charted data on study characteristics by impairment type, and critically appraised the studies, except for case reports/series.

Results

Seventeen studies were included: four randomized controlled trials, four uncontrolled trials, four case series and five case reports. Only three studies had a sample size >20. Impairments described were forearm fractures (n = 5), spasticity (n = 5), muscle weakness (n = 4), joint contractures (n = 2) and pain (n = 1). Four poor to fair quality studies on forearm fractures supported the effectiveness of 3D-printed orthoses on hand function, functionality, and satisfaction. One good quality study on spasticity demonstrated the effectiveness of 3D-printed orthoses on hand function. One poor quality pain study reported limited positive effects on satisfaction. Studies on muscle weakness and joint contractures showed no benefits.

Conclusion

Current literature addressing the effectiveness of 3D-printed orthoses for traumatic and chronic hand conditions consists primarily of small and poor methodological quality studies. There is a need for well-designed controlled trials including patient-related outcomes, production time and cost analyses.

Adjustment to hand injury: Cross-sectional survey exploring adjustment in relation to illness perceptions and coping strategies

STUDY DESIGN

Cross-sectional descriptive.

INTRODUCTION

Hand injuries are highly prevalent, and the impact they have on physical, emotional, and functional adjustment is well recognized. Increasingly, adjustment to health conditions including hand injuries is being understood in terms of psychological variables.

PURPOSE OF THE STUDY

To examine the role of illness beliefs and coping strategies in adjustment to hand injury. Adjustment was considered from a complete perspective including quality of life (QOL) and functional ability as well as mood and trauma symptoms.

METHODS

Cross-sectional survey whereby consecutive patients (n = 65) attending the regional plastic surgery service with hand injuries were invited to complete a questionnaire assessing illness perceptions, coping strategies, QOL, hand functioning, depression, and trauma symptoms. Data were analyzed in SPSS (IBM Corporation, Armonk, NY) by correlation and then hierarchical regression analysis.

RESULTS

Illness perceptions and coping strategies were significantly related to the adjustment outcomes (hand functioning, QOL, depression, and trauma symptoms). Specifically, poorer adjustment was associated with more negative illness beliefs (r = 0.31-0.47), greater use of denial (r = 0.24-0.53), and avoidance-based (r = 0.41-0.64) coping strategies.

DISCUSSION

Illness beliefs and coping play an important role in adjustment after hand injury. Adjustment is multifaceted with a need to consider physical and emotional functioning. More optimistic beliefs and adaptive coping styles are associated with improved adjustment.

CONCLUSION

The role of psychological variables in optimizing adjustment is an important consideration for the design of psychological interventions, but because this study was cross sectional and cannot assume directional effects, future longitudinal studies are needed.

LEVEL OF EVIDENCE

N/A.

Cold intolerance after nerve injury

Cold intolerance after nerve injury can be severe and has been associated with high levels of pain and disability. This article provides an overview of the assessment and nonoperative management of cold-induced symptoms after peripheral nerve injury. A comprehensive evaluation should include both objective measures such as skin temperatures and subjective tools to assess the patient's perspective and impact of the symptoms. Management of the patient with cold intolerance remains challenging and should include adaptive strategies, warming interventions, and desensitization conditioning programs to minimize cold-induced pain and hyperresponses.

Patient-reported quality of life and hand disability in elderly patients after a traumatic hand injury - a retrospective study

Background

Hand injuries occur at any age and cause disability in hand and arm function as well as impaired quality of life, but no study has focused on hand disability and quality of life in the elderly after a hand injury. Globally, the population over 60 years of age is expected to double by 2050 and more hand injuries are estimated among the elderly population. Our goal is to obtain more information and a better understanding of problems elderly patients experience after a hand injury to be able in the future to optimally relocate resources in the health care sector with respect to numbers and injury pattern as well as to health status of these patients.

Methods

Patients aged more than 65 years with a traumatic hand/wrist/forearm injury treated (July 1st 2013 - June 30th 2014) at department of Hand Surgery, Malmö, Sweden were included. Health-related outcome questionnaires, i.e. QuickDASH, SF-36, Visual Analogue Scale (VAS), Cold Intolerance Severity Score (CISS), and general information were mailed to the patients (time from injury: > 1.5–2.5 years). The participants were compared in groups according to age, gender, cold intolerance, injury severity and previous occupation.

Results

One hundred and thirty-seven participants responded [response rate 55%; non-responders (n = 113); only difference between groups was that non-responders were older]. Women were older than men at the time of injury (p = 0.04) and differed regarding living conditions. The main differences in QuickDASH, all VAS questions, and the majority of SF-36 subscales (p < 0.05) were found in the participants with CISS > 50, who experienced more impairment. More serious injuries (Modified HISS) were found to have higher QuickDASH and CISS score as well as more functional impairment (p < 0.05). Few differences were found in groups divided according to age, gender (although men experiencing less functional impairment in QuickDASH), previous occupation and injured hand.

Conclusions

Patients aged more than 65 years at the time a hand injury was sustained, generally experience a high-level quality of life and limited functional problems after such an injury, but patients with CISS > 50 and with a more serious injury were more severely affected.

Cold hypersensitivity after hand injuries. A prospective 7-year follow-up

We studied changes in cold hypersensitivity from 3 to 7 years following severe hand injuries. Data was collected using postal questionnaires 7 years after injury in 71 patients who had participated in a 3-year follow-up from the time of injury. There was no change in cold sensitivity measured using the McCabe Cold Sensitivity Severity scale (CSS) from 3 to 7 years after injury. However, there was a trend toward decreased severity measured using a five-level scale of self-reported cold hypersensitivity. Compared to the 3-year follow-up, fewer respondents rated their condition as severe and two patients had recovered from their cold hypersensitivity at the 7-year follow-up. Furthermore, 21 (30%) of the respondents stated a decrease in cold hypersensitivity during the last 2 years. Limitations in cold associated activities and the importance of being less limited in leisure activities (NRS 0-10) did not change between the two follow-ups. In conclusion, the CSS-scores did not change from 3 to 7 years after injury. Several patients experienced improvements in cold hypersensitivity, but few recovered completely from the condition.

Occupational performance problems identified by 507 patients: An insight that can guide occupation-based hand therapy

Introduction

Several barriers challenge the use of occupation-based interventions in hand therapy. An outpatient clinical setting can be prepared in such a way as to address the most common occupational performance problems which might promote an occupation-based intervention. To this end, more knowledge is needed about which problems patients with hand-related disorders consider most important.

Methods

Interviews using the Canadian Occupational Performance Measure (COPM)were conducted with 507 patients. Data were entered into Microsoft Excel in the COPM categories: Self-care, productivity and leisure and analysed using descriptive statistics. Data concerning main problem areas were categorized according to the Taxonomic Code of Occupational Performance (TCOP). The analysis included the number of prioritized occupational performance problems (NPOPP) in each COPM category/subcategory; the NPOPP in each category is relative to gender and age and the most frequent problems.

Results

The total NPOPP was 2384. Problems within productivity and self-care constituted the largest proportion, respectively, 46% and 40%. Gender or age affected the NPOPP in each category to a limited extend. Problems were expressed at all levels in the TCOP, except the lowest level. The most frequently expressed problem was use of utensils when eating.

Conclusion

The problems mostly concern productivity and self-care, regardless of gender or age. Patients consider problems at the levels of occupation, activities, tasks and actions to be important and meaningful to address in their intervention. This study provides useful knowledge that can be applied when preparing a setting to address the most common problems, which could lead to the promotion of occupation-based interventions.

Evaluation of Cold Sensitivity, Pain, and Quality of Life After Upper Extremity Nerve Injury

BACKGROUND

The purpose of this study was to evaluate the relationship between reported cold sensitivity, pain, and impact on quality of life (QoL) after upper extremity nerve injury.

METHODS

This cross-sectional study included adults more than 6 months after an upper extremity nerve injury. Assessment included the Pain Evaluation Questionnaire (pain descriptors, questionnaire, pain intensity, impact on QoL), and Cold Intolerance Severity Scale (CISS). Statistical analyses evaluated the relationships between the Pain Evaluation Questionnaire, CISS, and independent variables.

RESULTS

There were 70 patients (mean age 42 ± 16 years). There were high levels of pain, cold sensitivity, and impact on QoL reported. Patients selecting the adjective "coldness" had significantly higher CISS scores (P = .005), pain intensity (P= .008), and impact on QoL (P < .006). Impact on QoL and CISS (r = .35) were moderately correlated. There were significant correlations (P < .01) between the level of cold-induced pain and CISS (r = .78), overall pain intensity (r = .58), pain descriptor score (r = .49), and impact on QoL (r = .32).

CONCLUSIONS

Cold-induced pain is associated with higher cold sensitivity scores and greater impact on QoL. Reporting a single descriptor "coldness" and ranking cold-induced symptoms were strongly associated with higher cold sensitivity scores and impact on health-related QoL. This may have important implications for quick screening to identify patients with cold sensitivity, and future studies in larger patient samples are necessary to provide additional evidence.

Self-management strategies used by patients who are hypersensitive to cold following a hand injury. A prospective study with two years follow-up

STUDY DESIGN

Prospective cohort study.

INTRODUCTION

Knowledge of the strategies used by patients with injuries of the hand to manage cold hypersensitivity should guide information given by health-care workers.

PURPOSE

To explore the use of cold-associated self-management strategies in patients with severe hand injuries.

METHODS

Seventy patients being cold hypersensitive following a hand injury, reported use of strategies to limit cold-induced symptoms in the injured hand(s) and the severity of cold-associated activity limitations one and two years after surgery.

RESULTS

The patients used several strategies, including clothing (100%), use of own body (movement/use of muscles to produce heat or massage of the fingers) (94%), and heating aids (48%), but were still limited in valued cold-associated activities two years after surgery. The number of patients staying indoors, using heating aids and hand wear indoors and during summer-time increased with severity of cold hypersensitivity. Patients both implemented and discontinued different strategies after the first year, but for most strategies, the proportions of users were quite stable.

CONCLUSION

The most common strategies used to limit cold-induced symptoms in the injured hand(s) were clothing and use of own body. Many patients also seemed to benefit from using heating aids. After one year, a number of patients still experimented in finding the best strategies and were still limited in valued cold-associated activities.

LEVEL OF EVIDENCE

2b.

Prevalence of cold sensitivity in patients with hand pathology

BACKGROUND

The purpose of this study was to evaluate the prevalence of cold sensitivity in patients with hand- and wrist-related diagnoses.

METHODS

We included English-speaking adults who were more than 1 month following hand injury or onset of symptoms. Patients were asked if exposure to cold air or water provoked cold-related symptoms and to rank symptom severity (scale 0-10). Statistical analyses evaluated the relationships between the cold sensitivity and independent variables (age, gender, history of trauma, and time from injury/symptoms).

RESULTS

There were 197 patients (mean age 49 ± 16 years): 98 trauma and 99 non-trauma cases. Cold-induced symptoms were reported by 34 %, with 10 % reporting severe symptoms. Exposure to cold air is the most common catalyst; mean severity score was 6.7 ± 2.2. Those with traumatic injuries compared to non-trauma diagnoses reported significantly more cold-induced symptoms (p = .04). Using backward linear regression, the significant predictors of cold symptom severity were trauma (p = .004) and time since onset (p = .003). Including only the trauma patients in the regression model, the significant predictor was time since injury (p = .005).

CONCLUSIONS

Cold-induced symptoms are reported by more than 30 % of hand-related diagnoses, and exposure to cold air was the most commonly reported trigger. The significant predictors of cold-induced symptoms are traumatic injuries and longer time from injury. This study provides evidence of the common problem of cold sensitivity in patients with hand pathology.

LEVEL OF EVIDENCE

Prognostic Level II.

Self-reported cold sensitivity in patients with traumatic hand injuries or hand-arm vibration syndrome - an eight year follow up

BACKGROUND

Cold sensitivity is a common complaint following hand injuries. Our aim was to investigate long-term self-reported cold sensitivity, and its predictors and the importance of sense of coherence (SOC), 8 years after a hand injury as well as in patients treated for Hand Arm Vibration Syndrome (HAVS) during the same time period.

METHODS

Responses to the Cold Intolerance Symptom Severity (CISS) questionnaire and the Sense of Coherence (SOC) questionnaire were investigated in hand injured patients (n = 64) and in patients with HAVS (n = 26). The Mann-Whitney U-Test was used to identify significant differences between subgroups. When analysing predictors for cold sensitivity severity, the Spearman rank correlation (rS coefficient) were used for quantitative predictive variables, Mann-Whitney U-Test for dichotomous variables and Kruskal-Wallis Test for multiple categorical data. The Wilcoxon's signed rank test was used to investigate longitudinal changes in outcome.

RESULTS

There was a significant change in total CISS score for patients with traumatic hand injury, indicating fewer problems with cold sensitivity over time. Symptoms, such as stiffness, weakness and skin colour change on cold exposure, caused fewer problems, but perceived pain/aching and numbness remained unchanged as well as time needed for relief of symptoms on return to a warm environment. The negative impact of cold sensitivity on daily activities and at work was reduced, but problems when engaged in hobbies or when being exposed to cold wintry weather remained unchanged. None of the investigated predictors related to the hand injury were significantly associated with a change in cold sensitivity at the 8-year follow up. In contrast, no significant change in cold sensitivity was noted in the patients with HAVS for any of the situations included in the CISS questionnaire. A lower sense of coherence score correlated significantly with worse cold sensitivity (CISS score) in both patient groups.

CONCLUSIONS

The negative impact of cold sensitivity on daily life was reduced for patients with traumatic hand injury, but did not change over time in patients with HAVS. A low SOC is associated with worse cold sensitivity in such groups of patients. Information about relieving strategies should be provided for patients with cold sensitivity.

Disability and health after replantation or revascularisation in the upper extremity in a population in southern Sweden - a retrospective long time follow up

Background

Replantation in the upper extremity is a well-established microsurgical procedure. Many have reported patients’ satisfaction and functional measurements.

The aim was to investigate the long time consequences as activity limitations in hand/arm, the general health and cold sensitivity after a replantation or revascularization in the upper extremity and to examine if sense of coherence (SOC) can be an indicator for rehabilitation focus.

Methods

Between 1994–2008, 326 patients needed replantation/revascularization in the upper extremity. 297 patients were followed up. Information was collected from the medical notes and by questionnaires [Quick-DASH (disability hand/arm), EuroQ-5D (general health), CISS (cold sensitivity) and SOC (sense of coherence)]. Severity of injury was classified with the modified Hand Injury Severity Score (MHISS).

Results

The patients [272 (84%) men and 54 (16%) women; median age 39 years (1–81 years)], where most injuries affected fingers (63%) and thumb (25%), commonly affecting the proximal phalanx (43%). The injuries were commonly related to saws (22%), machines (20%) and wood splints (20%). A direct anastomosis (30%) or vein grafts (70%) were used. The overall survival was 90%. 59% were classified as Major.

Equal parts of the injuries took part during work and leisure, DASH scores at follow up were worse (p = 0.005) in the former. Twenty percent changed work and 10% retired early. Patients with early retirement were significantly older, had a more severe injury, worse disability, quality of life and functional outcome. Median DASH score was low [11.4 (0–88.6)] and correlated with severity of injury. Abnormal cold sensitivity (CISS > 50) was seen in 51/209 (24%) and they had a worse disability, quality of life, functional outcome and lower SOC. Patients with a low SOC had on the whole a worse outcome compared to patients with a high SOC and with significant differences in age, EQ-5D, Quick-DASH and CISS.

Conclusions

A high MHISS, abnormal cold intolerance and a low SOC seems to be factors influencing the patients’ outcome and might be relevant in the rehabilitation of the patients. Also, those who had to retire early had a worse disability, quality of life and functional outcome.

Human flexor tendon tissue engineering: in vivo effects of stem cell reseeding

BACKGROUND

Tissue-engineered human flexor tendons may be an option to aid in reconstruction of complex upper extremity injuries with significant tendon loss. The authors hypothesize that human adipose-derived stem cells remain viable following reseeding on human tendon scaffolds in vivo and aid in graft integration.

METHODS

Decellularized human flexor tendons harvested from fresh-frozen cadavers and reseeded with green fluorescent protein-labeled pooled human adipose-derived stem cells were examined with bioluminescent imaging and immunohistochemistry. Reseeded repaired tendons were compared biomechanically with unseeded controls following implantation in athymic rats at 2 and 4 weeks. The ratio of collagen I to collagen III at the repair site was examined using Sirius red staining. To confirm cell migration, reseeded and unseeded tendons were placed either in contact or with a 1-mm gap for 12 days. Green fluorescent protein signal was then detected.

RESULTS

Following reseeding, viable cells were visualized at 12 days in vitro and 4 weeks in vivo. Biomechanical testing revealed no significant difference in ultimate load to failure and 2-mm gap force. Histologic evaluation showed host cell invasion and proliferation of the repair sites. No increase in collagen III was noted in reseeded constructs. Cell migration was confirmed from reseeded constructs to unseeded tendon scaffolds with tendon contact.

CONCLUSIONS

Human adipose-derived stem cells reseeded onto decellularized allograft scaffolds are viable over 4 weeks in vivo. The movement of host cells into the scaffold and movement of adipose-derived stem cells along and into the scaffold suggests biointegration of the allograft.

Factors associated with survey response in hand surgery research

BACKGROUND

A low response rate is believed to decrease the validity of survey studies. Factors associated with nonresponse to surveys are poorly characterized in orthopaedic research.

QUESTIONS/PURPOSES

This study addressed whether (1) psychologic factors; (2) demographics; (3) illness-related factors; and (4) pain are predictors of a lower likelihood of a patient returning a mailed survey.

METHODS

One hundred four adult, new or return patients completed questionnaires including the Pain Catastrophizing Scale, Patient Health Questionnaire-9 depression scale, Short Health Anxiety Index, demographics, and a pain scale (0-10) during a routine visit to a hand and upper extremity surgeon. Of these patients, 38% had undergone surgery and the remainder was seen for various other conditions. Six months after their visit, patients were mailed the DASH questionnaire and a scale to rate their satisfaction with the visit (0-10). Bivariate analysis and logistic regression were used to determine risk factors for being a nonresponder to the followup of this study. The cohort consisted of 57 women and 47 men with a mean age of 51 years with various diagnoses. Thirty-five patients (34%) returned the questionnaire. Responders were satisfied with their visit (mean satisfaction, 8.7) and had a DASH score of 9.6.

RESULTS

Compared with patients who returned the questionnaires, nonresponders had higher pain catastrophizing scores, were younger, more frequently male, and had more pain at enrollment. In logistic regression, male sex (odds ratio [OR], 2.6), pain (OR, 1.3), and younger age (OR, 1.03) were associated with not returning the questionnaire.

CONCLUSIONS

Survey studies should be interpreted in light of the fact that patients who do not return questionnaires in a hand surgery practice differ from patients who do return them. Hand surgery studies that rely on questionnaire evaluation remote from study enrollment should include tactics to improve the response of younger, male patients with more pain.

LEVEL OF EVIDENCE

Level II, prognostic study. See Guidelines for Authors for a complete description of levels of evidence.

Incidence and predisposing factors of cold intolerance after arterial repair in upper extremity injuries

OBJECTIVE

The purpose of this report was to present abnormal posttraumatic cold intolerance in patients that previously underwent repair of arterial injuries after civilian upper limb trauma in our institution.

METHODS

All patients who underwent repair of arterial lesions after upper limb trauma since 1990 were reviewed, and clinical follow-up studies were performed. Patients were asked to complete the cold intolerance symptom severity (CISS) questionnaire to evaluate presence and severity of self-reported cold sensitivity, and the disabilities of arm, shoulder, and hand (DASH) questionnaire to analyze functional disability. Abnormal cold intolerance was defined as a CISS score over 30. Further analysis included evaluation of epidemiologic, clinical, and perioperative data for factors predisposing to abnormal cold intolerance.

RESULTS

A total of 87 patients with previous repair of upper limb arterial injuries were eligible to answer the CISS and DASH questionnaires, and 56 patients (64%; 43 men; median age: 31.9 years) completed both. In our cohort, blunt trauma was the predominant cause of injury (n = 50; 89%). Accompanying lesions of nerves (n = 22; 39%) and/or orthopedic injuries (n = 36; 64%) were present in 48 patients (86%). After a median follow-up period of 5.5 years (range, 0.5-19.7), 23 patients (41% of 56) reported on abnormal cold intolerance. Patients with cold intolerance had worse functional results (as measured by the DASH questionnaire; mean ± SD, 42.7 ± 29.7 vs 11.5 ± 23.9; P < .001) when compared with patients without. Cold intolerance was more frequently seen in patients with previous nerve lesion (P = .027) and in proximal injuries (subclavian or axillary vs brachial or forearm arteries: P = .006), but was not correlated to gender, age, involvement of the dominant or nondominant arm, and the presence of ischemia, bone injury, or an isolated vascular injury.

CONCLUSIONS

Abnormal cold intolerance is frequently seen in patients with a history of arterial repair in upper limb trauma. It is associated with significant functional impairment. Concomitant nerve injury and involvement of the subclavian or axillary artery are the major predisposing factors for development of cold intolerance after upper limb trauma.