Article

Lumbar spinal stenosis associated with peripheral arterial disease: a prospective multicenter observational study

Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, 1-Hikarigaoka, Fukushima, Fukushima, 960-1295, Japan.
Journal of Orthopaedic Science (Impact Factor: 1.01). 09/2012; 17(6). DOI: 10.1007/s00776-012-0311-z
Source: PubMed

ABSTRACT Background
Intermittent claudication is a common symptom of both lumbar spinal stenosis (LSS) and peripheral arterial disease (PAD) in middle-aged and elderly people. However, the prevalence and clinical characteristics of LSS with PAD (LSSPAD) have not been investigated in a multicenter study. The aim of this study was to investigate the prevalence and clinical characteristics of LSS associated with PAD.

Methods
570 patients diagnosed with LSS using a clinical diagnostic support tool and MRI at 64 facilities were enrolled. We evaluated each patient’s medical history, physical findings, ankle brachial index, Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) score, and the Short Form 36 (SF-36) score. Statistical analyses were performed to compare LSSPAD patients and LSS patients without PAD using the t test, Mann–Whitney’s U test, and multivariate recurrence analysis. p values of <0.05 were considered statistically significant.

Results
The LSSPAD group comprised 38 patients (6.7 %); 20 (3.5 %) had pre-diagnosised PAD while 18 (3.2 %) had undetected PAD. The clinical characteristics of these patients were advanced age, diabetes, and a history of ischemic heart disease and cerebrovascular disorder. 570 patients enrolled, and 448 (78.6 %) of those patients were followed up at three months after enrollment. Pain in buttocks and legs improved less in the LSSPAD group than in the LSS group (p < 0.05). Improvements in the “general health” score in SF-36 were lower in the LSSPAD group than in the LSS group (p < 0.05).

Conclusions
Advanced age, diabetes, and a history of cerebrovascular disorder and ischemic heart disease were associated with LSSPAD. Because LSSPAD patients show less improvement in QOL than patients with LSS but without PAD do, clinicians should consider the coexistence of PAD in LSS patients.

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Available from: Masahiro Kanayama, Jul 25, 2015
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    ABSTRACT: Objective Intermittent claudication (IC) is a typical symptom of peripheral arterial disease (PAD) and lumbar spinal stenosis (LSS). In order to prevent misdiagnosis of vascular disease, it is important to know the incidence of and risk factors for PAD in patients with LSS. Therefore, the aim of our study was to evaluate the incidence of and risk factors for PAD in patients with typical and severe LSS who underwent spinal surgical treatment. Methods The occurrence of PAD was examined retrospectively in 171 consecutive patients with LSS and severe IC who underwent surgical treatment at our hospital from June 2012 to June 2013. Data were collected on background characteristics (sex, age) and known risk factors for PAD, such as hypertension, diabetes mellitus, smoking, hyperlipidemia, stroke, and ischemic heart disease. Results Of the 171 patients enrolled, 7 had an abnormal ankle-brachial index (ABI). Computed tomography angiography (CTA) was performed in these patients, and a final diagnosis of PAD was established for all 7 patients. The incidence of PAD in all patients with LSS was 4.1%(7 of 171). Stroke and ischemic heart disease were significantly more common in the LSSPAD group compared with the LSS group. Multiple logistic regression analyses with a forced-entry method revealed that age and stroke (p<0.05) were independent risk factors for PAD. Conclusion To prevent misdiagnosis of fatal PAD, we recommend ABI be assessed in patients with LSS and history of stroke.
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