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Assessment of hip abductor power in patients with foot drop: a simple and useful test to differentiate lumbar radiculopathy and peroneal neuropathy.
Spine (Phila Pa 1976). 2013 Feb 01; 38(3):257-63.S

Abstract

STUDY DESIGN

Prospective study on a diagnostic test.

OBJECTIVE

To determine the usefulness of hip abductor power assessment in the differential diagnosis of foot drop due to lumbar radiculopathy and peroneal neuropathy.

SUMMARY OF BACKGROUND DATA

Foot drop arises from various neuromuscular conditions. Differential diagnosis obvious in the typical case, however, is often inconclusive. There are few reports regarding the validity of hip abductor power in the differential diagnosis of foot drop.

METHODS

Sixty-one consecutive patients who presented with tibialis anterior weakness Medical Research Council grade of less than 3 were included and underwent neurological examination including the assessment of hip abductor power. Patient demographics, mechanism and pattern of foot drop, neurological findings, and the diagnoses were recorded. Final diagnoses were established on the basis of clinical information, imaging studies, and electrophysiological study in limited cases. Validity and reliability of the hip abductor power assessment in the differential diagnosis of foot drop due to lumbar radiculopathy and peroneal neuropathy were evaluated.

RESULTS

There were 44 men and 17 women, with a mean age of 46.8 years (19-77 yr). The final diagnosis was peroneal neuropathy in 28 patients, lumbosacral plexopathy in 9 patients, lumbar radiculopathy in 21 patients, and sciatic nerve disorder in 3 patients. Concomitant hip abductor weakness was found in 85.7% of lumbar radiculopathy and 3.6% of peroneal neuropathy. The sensitivity and specificity of hip abductor power in the differential diagnosis of foot drop due to the lumbar radiculopathy and peroneal neuropathy were 85.7% and 96.4%, respectively. The positive and negative predictive values were 94.7% and 90%, respectively.

CONCLUSION

Assessment of hip abductor strength is a simple and useful method in the differential diagnosis of foot drop due to lumbar radiculopathy and peroneal neuropathy.

Authors+Show Affiliations

Department of Orthopaedic Surgery, Ajou University School of Medicine, Suwon, Republic of Korea.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22805342

Citation

Jeon, Chang-Hoon, et al. "Assessment of Hip Abductor Power in Patients With Foot Drop: a Simple and Useful Test to Differentiate Lumbar Radiculopathy and Peroneal Neuropathy." Spine, vol. 38, no. 3, 2013, pp. 257-63.
Jeon CH, Chung NS, Lee YS, et al. Assessment of hip abductor power in patients with foot drop: a simple and useful test to differentiate lumbar radiculopathy and peroneal neuropathy. Spine (Phila Pa 1976). 2013;38(3):257-63.
Jeon, C. H., Chung, N. S., Lee, Y. S., Son, K. H., & Kim, J. H. (2013). Assessment of hip abductor power in patients with foot drop: a simple and useful test to differentiate lumbar radiculopathy and peroneal neuropathy. Spine, 38(3), 257-63. https://doi.org/10.1097/BRS.0b013e318268c8bc
Jeon CH, et al. Assessment of Hip Abductor Power in Patients With Foot Drop: a Simple and Useful Test to Differentiate Lumbar Radiculopathy and Peroneal Neuropathy. Spine (Phila Pa 1976). 2013 Feb 1;38(3):257-63. PubMed PMID: 22805342.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Assessment of hip abductor power in patients with foot drop: a simple and useful test to differentiate lumbar radiculopathy and peroneal neuropathy. AU - Jeon,Chang-Hoon, AU - Chung,Nam-Su, AU - Lee,Yu-Sang, AU - Son,Kwang-Hyun, AU - Kim,Jun-Ho, PY - 2012/7/19/entrez PY - 2012/7/19/pubmed PY - 2013/7/20/medline SP - 257 EP - 63 JF - Spine JO - Spine (Phila Pa 1976) VL - 38 IS - 3 N2 - STUDY DESIGN: Prospective study on a diagnostic test. OBJECTIVE: To determine the usefulness of hip abductor power assessment in the differential diagnosis of foot drop due to lumbar radiculopathy and peroneal neuropathy. SUMMARY OF BACKGROUND DATA: Foot drop arises from various neuromuscular conditions. Differential diagnosis obvious in the typical case, however, is often inconclusive. There are few reports regarding the validity of hip abductor power in the differential diagnosis of foot drop. METHODS: Sixty-one consecutive patients who presented with tibialis anterior weakness Medical Research Council grade of less than 3 were included and underwent neurological examination including the assessment of hip abductor power. Patient demographics, mechanism and pattern of foot drop, neurological findings, and the diagnoses were recorded. Final diagnoses were established on the basis of clinical information, imaging studies, and electrophysiological study in limited cases. Validity and reliability of the hip abductor power assessment in the differential diagnosis of foot drop due to lumbar radiculopathy and peroneal neuropathy were evaluated. RESULTS: There were 44 men and 17 women, with a mean age of 46.8 years (19-77 yr). The final diagnosis was peroneal neuropathy in 28 patients, lumbosacral plexopathy in 9 patients, lumbar radiculopathy in 21 patients, and sciatic nerve disorder in 3 patients. Concomitant hip abductor weakness was found in 85.7% of lumbar radiculopathy and 3.6% of peroneal neuropathy. The sensitivity and specificity of hip abductor power in the differential diagnosis of foot drop due to the lumbar radiculopathy and peroneal neuropathy were 85.7% and 96.4%, respectively. The positive and negative predictive values were 94.7% and 90%, respectively. CONCLUSION: Assessment of hip abductor strength is a simple and useful method in the differential diagnosis of foot drop due to lumbar radiculopathy and peroneal neuropathy. SN - 1528-1159 UR - https://www.unboundmedicine.com/medline/citation/22805342/Assessment_of_hip_abductor_power_in_patients_with_foot_drop:_a_simple_and_useful_test_to_differentiate_lumbar_radiculopathy_and_peroneal_neuropathy_ DB - PRIME DP - Unbound Medicine ER -