Secondary Logo

Journal Logo

Shoulder Symptoms and Function in Geriatric Patients

Burner, Todd MD1; Abbott, Daniel MD1; Huber, Karri DO1; Stout, Monica BS1; Fleming, Raymond PhD2; Wessel, Bambi MS1; Massey, Ellen1; Rosenthal, Ann MD1; Burns, Edith MD1

Journal of Geriatric Physical Therapy: October/December 2014 - Volume 37 - Issue 4 - p 154–158
doi: 10.1519/JPT.0b013e3182abe7d6
Research Reports
Free

Background and Purpose: Musculoskeletal problems, including shoulder pain, are common in the general population and are often cited as reasons for physician visits. Although many risk factors for shoulder pain are postulated, the effects of shoulder pain on functional level and perceived quality of life are poorly characterized in older adults. In this study, we set out to determine the prevalence and impact of shoulder symptoms and dysfunction in an older adult veteran population.

Methods: A chart review, cross-sectional survey, and examination were performed. A sample of 93 individuals, aged 60 years or older, was recruited from a primary clinic outpatient waiting room at the Clement J. Zablocki VA Medical Center in Milwaukee, Wisconsin. Patients were asked about shoulder symptoms and self-assessed health and completed the Stanford Modified Health Assessment Questionnaire. A series of 3 shoulder maneuvers was used to assess shoulder mobility and pain. The presence of diabetes and statin use was documented. A more thorough chart review was performed on individuals who reported shoulder pain and disability.

Results: Severe shoulder pain was common in the study group, reported by 31% of all participants. Functional limitation measured by the Modified Health Assessment Questionnaire and answering “yes” to greater difficulty performing daily tasks was associated with reduced internal rotation, which was present in almost 36% of all participants. Symptoms were often bilateral. No statistically significant risk factors emerged in this small sample, but suggestive trends were apparent. Interestingly, few patients reported discussing these problems with their providers, and shoulder-related problems were documented in only 10% of corresponding problem lists of symptomatic patients.

Conclusions: With an aging population, the high prevalence of shoulder pain may have considerable impact on public health. It will become increasingly important to define risk factors, delineate etiologies, and devise new management strategies for patients with symptomatic shoulder disease.

1Medical College of Wisconsin, Milwaukee.

2University of Wisconsin–Milwaukee.

Address correspondence to: Todd Burner, MD, 5000 W National Ave, Room 5110, Milwaukee, WI 53295 (todd.burner@va.gov and bambi.wessel@va.gov).

The authors thank the following for grant support: The Clinical and Translational Science Institute (CTSI) (1UL1-RR031973 (-01)) and The Clinical and Translational Science Award (CTSA) program of the National Center for Advancing Translational Sciences (8UL1TR000055). Finally, the authors thank the NIH/NIA (T35 AG029793).

The rights of all participants were protected throughout this entire study process.

The authors declare no conflict of interests.

Decision Editor: Richard W. Bohannon

Back to Top | Article Outline

INTRODUCTION

Chronic painful musculoskeletal disorders are a common problem in older adults and are related to a general decline in health and reduced quality of life. After the knee, the shoulder joint is the most commonly cited painful appendicular joint in the United States, being reported in 18.3 million individuals older than 18 years.1 The prevalence of shoulder pain in the general adult population ranges from 6.9% to 31%.2 Although the consensus in the literature is that the peak prevalence of shoulder pain occurs in people aged 45 to 64 years,2 this varies by definition and duration of pain.

While some understanding of risk factors exists for shoulder pain (obesity, diabetes, statin use, activity level),3–5 it remains unclear how demographic trends and risk factors affect the prevalence of shoulder disease in older adults. In addition, little is known about the impact of shoulder pain and impaired function on older patients' quality of life, and the frequency with which they report this symptom to their health care provider. One wonders if older patients have come to accept shoulder pain as a long-standing symptom and thus underreport this condition to their providers. Another possible explanation is that pain is more likely to resolve over time and is thus not reported secondary to resolution of symptoms. The goal of this study was to describe shoulder pain and dysfunction and explore relationships among them, in a convenience sample of individuals older than 60 years drawn from a large, Veterans Affairs (VA) outpatient primary care clinic.

Back to Top | Article Outline

METHODS

Subjects and Study Design

After approval by the local institutional review board, a cross-sectional survey, examination, and chart review of 93 individuals were performed. Clinic schedules were reviewed to solicit participation from individuals older than 60 years, and these were randomly approached in the waiting room of an outpatient primary care clinic at the Clement J. Zablocki VA Medical Center in Milwaukee, Wisconsin. After informed consent was obtained, individuals were screened for exclusion criteria, including major shoulder injuries, shoulder surgery, inflammatory arthritis, and upper extremity neuropathy or myopathy. If patients indicated that shoulder problems were a reason for the visit, they were excluded. If not excluded, individuals were asked a series of questions including whether they had had shoulder pain for more than 3 months in the last year, the location of their pain, and whether it interfered with sleep. Participants then completed the Stanford Modified Health Assessment Questionnaire (MHAQ), a global assessment of function based on reported amount of difficulty with daily activities that have been validated in aging populations.6,7 Categories include dressing and grooming, eating, and reaching, with each category scored separately. Each item was scored on a 4-point scale: 0 for no difficulty, 1 for some difficulty, 2 for much difficulty, and 3 for unable to perform. The use of a device or the need for assistance added 1 point to each category score. Higher scores on the 20-point scale indicate worse overall function. Participants rated their overall health as excellent, good, fair, or poor (self-assessed health [SAH],8 questions 7 and 8). Self-assessments of whether one's health is excellent, very good, good, fair, or poor have been valid and powerful predictors of mortality in community-dwelling adults in more than 300 studies over the past several decades.8 A primary chart review was completed on each individual to obtain background information, including demographics, medical history, and the number of prescription medications. In subjects with shoulder pain, a secondary chart review was performed, including a review of the problem list, progress notes, documented physical examination findings, referrals, and other management plans related to the shoulder complaint. A series of 3 simple physical maneuvers was used to assess shoulder mobility and pain with each movement (range of motion [ROM]). Active abduction, external rotation, and internal rotation were assessed by asking the participants to touch their hands to back of their neck, raise arms above their head and touch their upper, inner arms to their ears, and touch their thumbs to their shoulder blades. Each maneuver was assessed by observing and grading range of mobility on a 3-point scale (fully able, 3; partially able, 2; or unable, 1) and pain with movement (no pain, 1; some pain, 2; and lots of pain, 3). The right and left sides were scored separately. A sum score for all 3 maneuvers on each side and for pain on each side is also reported.

Back to Top | Article Outline

Statistical Analysis

Data analysis was performed using SPSS version 16 (SPSS Inc, Chicago, Illinois). Descriptive statistics are reported as frequencies, percentages, and mean ± SD as indicated. Chi-square comparisons were used to perform tests of significance between participants who did or did not report shoulder pain, and the Pearson correlations were used to explore relationships among specific measures. The sample size (n = 93) allowed detection of significant correlations (P < 0.05) with values ±0.28 or greater.

Back to Top | Article Outline

RESULTS

The demographics of the study population are shown in Table 1. Of the 93 participants, 90.3% were men and 9.7% women, 81.7% were white, and 18.3% African American. The mean age was 74.7 ± 10 years. In this sample, 48.4% had diabetes, and 58% were currently taking statin medications. Shoulder pain for 3 or more months in the last year was reported by 29 individuals (31%). These symptoms were often bilateral (41.4%) and interfered with sleep (48% of participants answered yes when asked whether the shoulder pain interfered with sleep). Furthermore, in those who reported chronic shoulder symptoms, 31% said that their condition affected grooming activities (measured with the MHAQ).

Table 1

Table 1

Impairments in performing physical maneuvers were common among the study participants, with 37 individuals (39.8%) having difficulty in performing 1 or more of the maneuvers. Participants were most likely to have trouble with touching their scapulae with their thumbs (internal rotation, 94.6% of those having difficulty with shoulder ROM); 19 of these individuals had trouble with the other maneuvers, and typically both the right and left sides were involved. Abnormal abduction, as evidenced by the “arm-to-ear” maneuver, was the second most affected shoulder maneuver in this study population, noted in around 18.3%.

Statistically significant correlates of impaired shoulder ROM were Health Assessment Questionnaire (HAQ) scores, pain on the side of impairment, and limited function and pain of the contralateral shoulder (Table 2). A “sum” function score of each shoulder was associated with a “sum” pain score on each side; that is, worse function/lower score of right shoulder correlated to greater pain (higher pain score) for the right shoulder (r = −0.391; P < .001), and same for the left shoulder (r = −0.423; P < .001). Overall impaired function on one side was correlated to overall poor function on the other (r = 0.849; P < .001), and pain on one side was correlated to pain on the other side (r = 0.554; P < .001). Decreased ability to perform daily activities as measured by the HAQ (higher HAQ score) was correlated to worse SAH (lower categorical score) (r = −0.410; P < .001), worse left shoulder function (r = −0.340; P = .001), more pain in both shoulders (r = 0.315; P = .002 right; r = 0.469, P < .001 left), and experience of pain for 3 or more months (r = 0.410; P < .001). In other words, those individuals with difficulty performing shoulder movements were more likely to experience pain, to have pain on both sides, and to have worse functional scores as measured by the HAQ scale. In this small sample, a statistically significant relationship was not found between reports of shoulder pain and a history of type 2 diabetes, or current use of statin medications.

Table 2

Table 2

Fewer than half of the 29 individuals (N = 14; 48%) reporting pain for 3 or more months in the last year also recalled speaking to their medical providers about their shoulder pain. When asked about possible causes of their shoulder pain, patients most commonly attributed it to “arthritis” (24%), injury (24%), or some other cause, such as “sleeping on it” or “age” (21%). The remainder was unsure as to the cause. A total of 38% reported taking medications for their condition, and 17% reported “exercise” as their treatment of choice; 28% reported taking no action for their shoulder symptoms.

Secondary chart review was performed on the 29 participants reporting shoulder pain for 3 or more months within the past year (Table 3). Only 10% (3 of the 29) had a shoulder issue noted on the problem list, and 45% (13 of the 29) had a shoulder problem documented in a progress note over the past year. In just more than half of these individuals (7 of 13), a shoulder examination was documented. Four notes described abnormal findings (decreased ROM, pain with ROM, gross weakness), and 3 “normal” shoulder examinations were noted. Imaging was obtained in 10 of the 29 participants during the previous year (Table 3). Pharmacologic treatment to address these individuals' shoulder pain was specifically recommended in 9 of 29 individuals. Treatments included nonsteroidal anti-inflammatory drugs, acetaminophen, narcotics, and topical agents among others. Specialty referrals were requested for 8 individuals, including physical therapy, occupational therapy, orthopedics, rheumatology, and physical medicine and rehabilitation.

Table 3

Table 3

Back to Top | Article Outline

DISCUSSION

We found a 31% prevalence of self-reported shoulder pain among this group of older, mostly male veteran individuals, even after excluding those with a prior history of shoulder injury or possibly confounding comorbid condition. In addition, 41% of these individuals reported bilateral shoulder pain for 3 or more months over the past year. This prevalence is at the highest end of the rates reported in younger adults.2 Participants with shoulder pain reported significantly more functional limitation. Worse SAH was significantly correlated to worse function measured with the HAQ.

Risk factors for shoulder pain and other musculoskeletal conditions have been studied by others. Bjelle3 mentions age, female gender, surrounding muscle strength, and diabetes as risk factors for shoulder problems. Hill and colleagues4 also noted female gender, age greater than 50 years, smoking history, and obesity as risk factors for shoulder pain and stiffness. Others have suggested waist circumference, waist-to-hip ratio, metabolic syndrome, diabetes, carotid intima-media thickness, as well as C-reactive protein level as factors associated with shoulder pain and rotator cuff tendinitis.5 Other studies suggest an association between diabetes and musculoskeletal disease.9 Statin use has been implicated as a possible risk factor for tendon disease, including tendon rupture and tendinitis, and shoulder stiffness.10,11 The extent of this risk and the influence of gender are not clear.12 Many of these risk factors for shoulder problems were present in a significant proportion of the study group, and we observed a high rate of shoulder pain despite the predominantly male gender of the subjects. The sample size was likely too small to detect statistically significant relationships between shoulder pain and some of these risk factors, despite the high prevalence of statin use (58%) and diabetes (50%). We are conducting a larger study to confirm these trends and corroborate the growing body of evidence supporting these putative shoulder pain risk factors.

We also observed a significant association between SAH and function measured by the HAQ and suspect that the presence of shoulder pain and dysfunction likely contributes to worse ratings of health and quality of life. In fact, the majority of the symptomatic individuals (69%) in our study group reported disruption in their activities of daily living as measured by the MHAQ. With an aging population, the overall impact of shoulder pain is likely to be considerable. Restricted ROM has been associated with the aging process13 and our results suggest that decreased internal rotation of the shoulder joint is the most common impairment, and one that we suspect negatively impacts perceived quality of life.

The chart review of the subset of patients reporting shoulder pain for 3 or more months in the past year gives an interesting glimpse into the variability of documentation and approach to management for this problem in the primary care setting. In the small proportion of patients whose pain was actually documented, treatment regimens varied widely. Only 31% had documented recommendation of pain medications, and only 28% were referred to other providers, including physical therapy. This referral rate is low considering the large amount of data suggesting physical therapy to be an important and effective treatment option.14–18 Further studies regarding management of shoulder pain are warranted and may help inform consistent treatment guidelines in this population. These studies are currently lacking. Although 34% of symptomatic patients underwent some type of imaging, including magnetic resonance imaging, it is unclear that this had any effect on management and treatment. The cost-effectiveness of imaging painful shoulders in older adults also warrants careful examination.

Taken together, these data suggest that shoulder problems in the older adult are underreported. Thus, prior studies showing the peak prevalence of shoulder problems in middle age may not be capturing the high prevalence of this condition in the geriatric population. To date, very little research addresses the prevalence and causes for underreporting shoulder pain in older adults. Prior literature suggests that many older individuals accept pain as a part of the normal aging process or are concerned that their health will be adversely affected by using pain medications.19 Other factors to consider are short appointment durations where other health issues are given higher priority, greater longevity among the older adult population while maintaining higher levels of function, and thus increasing the prevalence of shoulder pain in this demographic. Further studies are necessary to explore these hypotheses. Our results also suggest that reliance upon patient problem lists as a way to identify affected individuals greatly underestimates the prevalence of this significant health problem, and thus large studies using databases, such as the national VA database, may capture only a fraction of patients with shoulder symptoms.

This study was limited by a number of factors, first of which is its restriction to a VA population which included few women. The sample size only provided power to detect correlations between measures of r = 0.28 or greater. Because time to spend with each participant was limited, we did not assess current or past history of “repetitive use” vocational or recreational activity that might increase the risk of shoulder impairment.20 A much larger sample would be needed to determine whether activity supersedes other risk factors in the geriatric population. It was also not possible within the confines of this study to accurately describe history of statin use. Some of this difficulty is because many patients seen at the VA clinics follow with multiple “outside” or community-based providers. This might also contribute to the observed low rates of diagnostic and treatment documentation in the electronic medical record at the VA.

Back to Top | Article Outline

CONCLUSION

This study identified shoulder pain and dysfunction as a common problem within an older adult, predominantly male, veteran population, and suggests a significant disease burden with regard to functionality and quality of life. This problem appears to be frequently overlooked and therefore undertreated. Further studies regarding incidence, prevalence, risk factors, and appropriate evaluation and management of these shoulder conditions are warranted.

Back to Top | Article Outline

ACKNOWLEDGMENTS

The authors thank the veterans who participated in this study and the Clement J. Zablocki VA Medical Center for the space, resources, and overall support in completing this project. We also thank REDCap,21 which was instrumental in our data collection and management.

Back to Top | Article Outline

REFERENCES

1. The burden of musculoskeletal disease in the United States. Bone Joint Decade. 2008:4.
2. Luime J, Hendriksen I, Burdorf A, et al. Prevalence and incidence of shoulder pain in the general population: a systematic review. Scand J Rheumatol. 2004;33(2):73–81.
3. Bjelle A. Epidemiology of shoulder problems. Bailliere's Clin Rheumatol. 1989;3(3):437–451.
4. Hill CL, Gill TK, Shanahan EM, Taylor AW. Prevalence and correlates of shoulder pain and stiffness in a population-based study: the North West Adelaide Health Study. Int J Rheum Dis. 2010;13(3):215–222.
5. Rechardt M, Shiri R, Karppinen J, Jula A, Heliövaara M, Viikari-Juntura E. Lifestyle and metabolic factors in relation to shoulder pain and rotator cuff tendinitis: a population-based study. BMC Musculoskelet Disord. 2010;11:165.
6. Pincus T, Summey JA, Soraci SA Jr, Wallston KA, Hummon NP. Assessment of patient satisfaction in activities of daily living using a modified Stanford Health Assessment Questionnaire. Arthritis Rheum. 1983;26(11):1346–1353.
7. Bruce B, Fries JF. The Stanford Health Assessment Questionnaire (HAQ): a review of its history, issues, progress, and documentation. J Rheumatol. 2003;30(1):167–178.
8. Idler E, Benyamini Y. Self-rated health and mortality: a review of 27 community studies. J Health Soc Behav. 1997;38(1):21–37.
9. Mathew AJ, Nair JB, Pillai SS. Rheumatic-musculoskeletal manifestations in type 2 diabetes mellitus patients in south India. Int J Rheum Dis. 2011;14(1):55–60.
10. Marie I, Delafenetre H, Massy N, Thuillez C, Noblet C; Network of the French Pharmacovigilance Centers. Tendinous disorders attributed to statins: a study on ninety-six spontaneous reports in the period 1990-2005 and review of the literature. Arthritis Rheum. 2008;59(3):367–372.
11. Harada K, Tsuruoka S, Fujimura A. Shoulder stiffness: a common adverse effect of HMG-CoA reductase inhibiÍtors in women? Int Med. 2001;40(8):817–818.
12. Beri A, Dwamena FC, Dwamena BA. Association between statin therapy and tendon rupture: a case-control study. J Cardiovasc Pharmacol. 2009;53(5):401–404.
13. Bergstrom G, Bjelle A, Sorensen LB, Sundh V, Svanborg A. Prevalence of symptoms and signs of joint impairment at age 79. Scand J Rehabil Med. 1985;17(4):173–182.
14. Haddick E. Management of a patient with shoulder pain and disability: a manual physical therapy approach addressing impairments of the cervical spine and upper limb neural tissue. J Orthop Sports Phys Ther. 2007;37(6):342–350.
15. Wilk KE, Arrigo C. Current concepts in the rehabilitation of the athletic shoulder. J Orthop Sports Phys Ther. 1993;18(1):365–378.
16. Bullock MP, Foster NE, Wright CC. Shoulder impingement: the effect of sitting posture on shoulder pain and range of motion. Man Ther. 2005;10(1):28–37.
17. Ginn KA, Herbert RD, Khouw W, Lee R. A randomized, controlled clinical trial of a treatment for shoulder pain. Phys Ther. 1997;77(8):802–809.
18. Ginn KA, Cohen ML. Conservative treatment for shoulder pain: prognostic indicators of outcome. Arch Phys Med Rehabil. 2004;85(8):1231–1235.
19. Denny DL, Guido GW. Undertreatment of pain in older adults: an application of beneficence. Nurs Ethics. 2012;19(6):800–809.
20. van der Windt D, Thomas E, Pope DP, et al. Occupational risk factors for shoulder pain: a systematic review. Occup Environ Med. 2000;57(7):433–442.
21. Harris PA, Taylor R, Thielke R, Payne J, Gonzalez N, Conde JG. Research electronic data capture (REDCap)—a metadata-driven methodology and workflow process for providing translational research informatics support. J Biomed Inform. 2009;42(2):377–381.
Keywords:

musculoskeletal pain; shoulder pain; veterans

Copyright © 2014 the Section on Geriatrics of the American Physical Therapy Association