Difficult life events affect lower extremity illness

Diagnosis of Mild-to-moderate Idiopathic Median Neuropathy at the Carpal Tunnel Based on Signs and Symptoms is Discordant From Diagnosis Based on Electrodiagnostic Studies and Ultrasound

BACKGROUND

Although idiopathic median neuropathy at the carpal tunnel (IMNCT) is objective and verifiable, distinction of normal and abnormal nerves is imprecise and probabilistic. The associated symptoms and signs (carpal tunnel syndrome [CTS]) vary, particularly for nonsevere (mild and moderate) median neuropathy. Discordance between diagnosis of mild or moderate median neuropathy at the carpal tunnel using symptoms and signs and diagnosis based on objective tests is a measure of the potential for overdiagnosis and overtreatment.

QUESTION/PURPOSE

What is the difference in the estimated prevalence of mild-to-moderate IMNCT using nonsevere signs and symptoms compared with the estimated prevalence using electrodiagnostic studies (EDS) and ultrasound (US)?

METHODS

We used data from an existing cross-sectional data registry. To create this registry, between January 2014 and January 2019, we considered all new adult English-speaking people who had an EDS that included the median nerve or people with a diagnosis of CTS who did not have surgery yet. A small and unrecorded number of people declined participation. The cross-sectional area of the median nerve at the distal wrist crease using US in people who already had EDS was measured. People with a diagnosis of CTS underwent both EDS and US. The six signs and symptoms of Carpal Tunnel Syndrome 6 (CTS-6, a validated tool to estimate the probability of IMNCT using ratings of symptoms and signs of CTS) were recorded. This resulted in a registry of 185 participants; we excluded 75 people for obvious, severe IMNCT (defined as nonrecordable nerve conduction velocity, thenar atrophy, or greater than 5 mm 2-point discrimination). Three of the 110 qualifying patients had missing information on ethnicity or race, but we accounted for this in our final analysis. Without a reference standard, as is the case with IMNCT, latent class analysis (LCA) can be used to establish the probability that an individual has specific pathophysiologic findings. LCA is a statistical method that identifies sets of characteristics that tend to group together. This technique has been used, for example, in diagnosing true scaphoid fractures among suspected fractures based on a combination of demographic, injury, examination, and radiologic variables. The prevalence of mild-to-moderate IMNCT was estimated in two LCAs using four signs and symptoms characteristic of mild-to-moderate IMNCT, as well as EDS and US measures of median neuropathy.

RESULTS

The estimated prevalence of mild-to-moderate IMNCT based on signs and symptoms was 73% (95% CI 62% to 81%), while the estimated prevalence using EDS and US measurements was 51% (95% CI 37% to 65%).

CONCLUSION

The notable discordance of 22% between the estimated prevalence of mild-to-moderate IMNCT using signs and symptoms and prevalence based on EDS and US criteria, and the overlapping CIs of the probability estimations, indicate considerable uncertainty and a corresponding notable potential for underdiagnosis or overdiagnosis. When signs and symptoms suggest mild-to-moderate median neuropathy and surgery is being considered, patients and clinicians might consider additional testing, such as EDS or US, to increase the probability of actual median neuropathy that can benefit from surgery. We might benefit from a more accurate and reliable diagnostic strategy or tool for mild-to-moderate IMNCT; this might be the focus of a future study.

LEVEL OF EVIDENCE

Level III, diagnostic study.

Correspondence of the Boston Carpal Tunnel Questionnaire with severity of median neuropathy

The Boston Carpal Tunnel Questionnaire is one of the most popular patient-reported outcome measures designed specifically for people with idiopathic median neuropathy at the carpal tunnel. We used electrophysiological and ultrasound measures of median neuropathy from one hand in 185 people to create a single measure of median neuropathy severity as a continuum (through exploratory factor analysis). We assessed if our single measure of median neuropathy severity is independently associated with Boston Carpal Tunnel Questionnaire item groupings. Median neuropathy severity measured as a continuum had modest independent associations with Boston Carpal Tunnel Questionnaire magnitude of capability (adjusted R2 0.063) and paraesthesia intensity (adjusted R2 0.12) items but not with items related to pain intensity. Considering the lack of association of Boston Carpal Tunnel Questionnaire pain items with objective pathophysiology, combined with their notable association with mental health measures in previous studies, it is probably best to omit items related to pain.Level of evidence: III.

Is Pain in the Uninjured Arm Associated With Unhelpful Thoughts and Distress Regarding Symptoms During Recovery From Upper-Extremity Injury?

PURPOSE

During recovery from upper-extremity injury, patients sometimes express concerns regarding pain associated with increased use of the uninjured limb. Concerns about discomfort associated with increased use may represent a manifestation of unhelpful thoughts such as catastrophic thinking or kinesiophobia. We asked the following questions: (1) Among people recovering from an isolated unilateral upper-extremity injury, is pain intensity in the uninjured arm associated with unhelpful thoughts and feelings of distress regarding symptoms, accounting for other factors? (2) Is pain intensity in the injured extremity, magnitude of capability, or accommodation of pain associated with unhelpful thoughts and feelings of distress regarding symptoms?

METHODS

In this cross-sectional study of new or returning patients presenting to a musculoskeletal specialist for care for an upper-extremity injury, the patients completed scales that were used to measure the following: pain intensity in the uninjured arm, pain intensity in the injured arm, upper-extremity-specific magnitude of capability, symptoms of depression, symptoms of health anxiety, catastrophic thinking, and accommodation of pain. Multivariable analysis was used to evaluate factors associated with pain intensity in the uninjured arm, pain intensity in the injured arm, magnitude of capability, and pain accommodation, controlling for other demographic and injury-related factors.

RESULTS

Greater pain intensity in both uninjured and injured arms was independently associated with greater unhelpful thinking regarding symptoms. A greater magnitude of capability and pain accommodation were independently associated with less unhelpful thinking regarding symptoms.

CONCLUSIONS

Given that greater pain intensity in the uninjured upper extremity is associated with greater unhelpful thinking, clinicians can be attuned to patient concerns about contralateral pain. Clinicians can facilitate recovery from upper-extremity injury by evaluating the uninjured limb as well as identifying and ameliorating unhelpful thinking regarding symptoms.

TYPE OF STUDY/LEVEL OF EVIDENCE

Prognostic II.

The mind and the hand

Symptoms are determined in large part by mindsets. Feelings of distress and unhelpful thoughts (misinterpretations) of symptoms account for much of the variability in comfort and capability with the severity of the underlying pathophysiology making a more limited contribution. Incorporating this experimental evidence into the daily practice of hand surgery will help us find ways to develop healthy mindsets, to prioritize the alleviation of distress and the gentle redirection of unhelpful thoughts, to avoid unnecessary surgery, and to provide better psychological and social support for people recovering from injury and surgery.

Magnitude of Incapability and Pain Intensity are Associated More with Unhelpful Thoughts Than Stressful Life Events

Prior studies show that stressful life events are associated with greater magnitude of incapability and symptom intensity. We sought to understand the association of such events (i.e., both adverse childhood experiences and recent difficult life events [DLEs]) alongside feelings of worry or despair and unhelpful, on the magnitude of incapability and symptom intensity in musculoskeletal patients. One hundred and thirty-six patients presenting for musculoskeletal specialty care completed measures of incapability, pain intensity, adverse childhood experiences, DLEs in the last year, unhelpful thoughts, symptoms of anxiety and depression, and sociodemographic factors. Factors associated with the magnitude of incapability and pain intensity were sought in multivariable analysis. Accounting for potential confounders, greater incapability was associated with greater unhelpful thoughts (RC  =  -0.81; 95% CI  =  -1.2 to -0.42; P  ≤  .001), but not with stressful life events (either during childhood or more recently). Greater pain intensity was associated with greater unhelpful thoughts(RC  =  0.25; 95% CI  =  0.16 to 0.35; P  ≤  .001) and being divorced or widowed (RC  =  1.8; 96% CI  =  0.43 to 3.2; P  =  .011), but again, not with stressful life events. The strong association of unhelpful thoughts with magnitude of incapability and pain intensity can motivate musculoskeletal specialists to anticipate patients expressing negative pain thoughts and behaviors. Future studies might account for social and environmental context behind stressful life events and the influence of resiliency and pain-coping strategies on these interactions.

Level of Evidence

Level III, prognostic study.

Recovery After Musculoskeletal Injury: Mental and Social Health

Recovery from injury involves painful movement and activity, painful stretches and muscle strengthening, and adjustment to permanent impairment. Recovery is facilitated by embracing the concept that painful movement can be healthy, which is easier when one has more hope, less worry, and greater social supports and security. Evolution of one's identity to match the new physical status is a hallmark of a healthy outcome and is largely determined by mental and social health factors. When infection, loss of alignment or fixation, and nerve issues or compartment syndrome are unlikely, greater discomfort and incapability that usual for a given pathology or stage of recovery signal opportunities for improved mental and social health. Surgeons may be the clinicians most qualified to make this discernment. A surgeon who has gained a patient's trust can start to noticed despair, worry, and unhelpful thinking such as fear of painful movement. Reorienting people to greater hope and security and a healthier interpretation of the pains associated with the body's recovery can be initiated by the surgeon and facilitated by social workers, psychologist, and physical, occupational and hand therapists trained in treatments that combine mental and physical therapies.

Symptoms of depression and catastrophic thinking attenuate the relationship of pain intensity and magnitude of incapability with fracture severity

OBJECTIVE

The relative association of pain intensity and magnitude of incapability with pathophysiology, accounting for psychological factors, is incompletely understood. Using moderation analysis, we assessed the association of pain intensity and magnitude of incapability (dependent variables) with fracture severity (independent variable) and the influence of symptoms of depression and catastrophic thinking (moderators) at early and later stages of recovery.

METHODS

A cohort of 731 patients recovering from a shoulder, elbow, or wrist fracture, completed self-reported measures of pain intensity, upper extremity capability, symptoms of depression, and catastrophic thinking between 2 and 4 weeks after injury and again between 6 and 9 months after injury. Fracture severity was rated by clinicians, and we used multivariable regression analysis to examine interaction effects of fracture severity, depression, catastrophic thinking, pain intensity, and magnitude of incapability at early and later stages of recovery.

RESULTS

Symptoms of depression and catastrophic thinking attenuate the relationship between pain intensity and fracture severity at earlier and later stages of recovery. Symptoms of depression and catastrophic thinking also attenuate the relationship between the magnitude of incapability and fracture severity, but only at early stages of recovery.

CONCLUSION

The relative divergence of pain intensity and magnitude of incapability from the level of fracture severity due to the moderating effects of unhelpful thinking and distress, signals a benefit to anticipating mental health opportunities during recovery after fracture. Fracture management can incorporate measures of unhelpful thinking and symptoms of distress to better address these opportunities and ensure comprehensive optimization of recovery.

LEVEL OF EVIDENCE

Level IIc, prognostic.

Specific knowledge and resilience affect short-term outcome in patients following primary total hip arthroplasty

PURPOSE

The aim of the present study was to investigate the potential associations between specific knowledge, resilience and patient-reported outcome measures (PROMS) following primary total hip arthroplasty (THA).

METHODS

In a cross-sectional prospective study, consecutive patients following primary THA were included at a rehabilitation center. A novel knowledge score and the validated Connor Davidson Resilience Scale (CD-RISC) were utilized to assess patients' specific knowledge and resilience, respectively. Additionally, patients completed a qualitative questionnaire regarding the information they had received. The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), as well as the University of California and Los Angeles Score (UCLA) served as primary outcome measures. Stepwise multiple regression analysis was performed to identify potential predictors of outcome.

RESULTS

A total of 103 patients at a mean age of 67.5 years (SD 10.5, 38-88) were included in the analysis at a median of 55.5 days (IQR 43-81) following primary THA. The mean knowledge and resilience scores were 3.8 (SD 1.6, 0-7) and 69.5 (SD 18.5, 0-100), respectively. Forty-seven percent of patients were afraid of harming their prosthesis and these patients had up to 59% worse WOMAC scores (p < 0.001). WOMAC scores on admission to rehabilitation were predicted by resilience and knowledge scores (R2 = 0.106, p = 0.036). UCLA scores at the time of admission were predicted by knowledge scores (R2 = 0.078, p = 0.007).

CONCLUSION

The present study demonstrated that patients with a feeling of uncertainty had an inferior short-term functional outcome following primary THA. Moreover, it could be shown that higher specific knowledge and resilience are associated with a better functional outcome according to validated PROMS. While these findings need to be prospectively validated in future studies, specific patient knowledge and resilience may have a direct impact on the outcome of primary THA.