The nerve supply of the lumbar intervertebral disc.
Edgar M.A.
A review of the literature that explores the innervation of the lumbar intervertebral disc.It contains a clarification of the sensory pathways and explores the theory that the disc is mainly supplied by the sympathetic nervous system. The author discussed the findings of sensory nerve endings in a degenerative lumbar disc which penetrate into the nucleus pulposus, normally insensitive in a standard disc.
The author considers the growing evidence… Continue reading
Muscle contribution to elbow joint valgus stability.
Lin F, Kohli N, Perlmutter S, Lim D, Nuber GW, Makhsous M
Repetitive valgus stress of the elbow can result in excessive strain or rupture of the native medial ulnar collateral ligament (MUCL). The flexor-pronator mass (FPM) may be particularly important for elbow valgus stability in overhead-throwing athletes. The aim of this study was to identify the relative contribution of each muscle of the FPM-that is, the flexor carpi ulnaris… Continue reading
Determining the Resting Position of the Glenohumeral Joint in Subjects Who Are Healthy.
Lin HT, Hsu AT, Chang GL, Chang Chien JR, An KN, Su FC
The resting position is frequently used by clinicians in the examination and early treatment of patients with joint impairments. However, there is a lack of research on the kinematic characteristics of the resting position of the glenohumeral (GH) joint. The aim of this study was to define the resting position of the GH joint by quantifying the… Continue reading
Spinous process palpation using the scapular tip as a landmark vs a radiographic criterion standard
This study aimed at determining the standing spinal landmark that corresponds to the inferior tip of the scapula and determining the accuracy of experienced palpators in locating a spinous process (SP) 3 levels above and below a given SP. An experienced palpator located the inferior scapular tip on 34 asymptomatic subjects and then positioned a 2-mm lead marker about 5 cm lateral to
Comparing the anatomical consistency of the posterior superior iliac spine to the iliac crest as reference landmarks for the lumbopelvic spine: A retrospective radiological study.
McGaugh JM, Brismée JM, Dedrick GS, Jones EA, Sizer PS
Palpation reference line coursing between the superior-most aspect of the iliac crests has been reported to cross the L4 spinous process or L4/L5 intervertebral space in approximately 80% of the population. Comparable data have not been defined for the line coursing between the posterior superior iliac spines (PSIS). The purpose of this study was to compare the anatomical consistency of… Continue reading
Clinical Importance of the Lateral Branch of the Deep Peroneal Nerve.
Kennedy, J G; Brunner, J B; Bohne, W H; Hodgkins, C W; Baxter, D B.
Persistent recalcitrant dorsolateral foot pain after ankle sprain cannot always be explained by known anatomic nerve pathways. To determine whether an impingement of a lateral branch of the deep peroneal nerve might be responsible for atypical pain, this study conducted a cadaveric anatomic study to identify the anatomy and course of the nerve… Continue reading
A functional model to describe the action of the adductor muscles at the hip in the transverse plane
R. Dennis Leighton
The purpose of this article is to present a functional model in support of the action of external rotation. Transverse plane motion of the femur at the hip during normal gait is driven by subtalar joint motion during the loading response, terminal stance, and preswing phases. Electromyographic (EMG) studies indicate varied activity in the AB, AL, and AM during the loading response, terminal stance, and preswing phases… Continue reading
The distended facet sign: an indicator of position-dependent spinal stenosis and degenerative spondylolisthesis
Peleg Ben-Galim and Charles A. Reitman
Symptoms of spinal stenosis are position-dependent. Stand up magnetic resonance imaging (MRI) and myelography can demonstrate further dynamic components of spinal stenosis that may go unrecognized on supine MRI. The purpose of this study was to describe a radiographic finding seen on standard supine MRI that is an indicator for dynamic spinalstenosis and degenerative spondylolisthesis. Six patients with classic neurogenic claudication but equivocal supine MRIfindings… Continue reading
The Clinical significance of the palmaris longus tendon in the pathophysiology of carpal tunnel syndrome
G.R. Keese, M.D. Wongworawat and G. Frykman
Carpal tunnel syndrome is associated with increased intracarpal canal pressure. The effect of tendon loading on intracarpal canal pressures is documented in biomechanical studies. Palmaris longus loading in wrist extension induces the greatest absolute increase in intracarpal canal pressure. Despite this fact, the palmaris longus is not yet a proven independent risk… Continue reading
The anatomical site of constriction of the median nerve in patients with severe idiopathic carpal tunnel syndrome
M.M Al-Qattan
During open carpal tunnel release in patients with severe idiopathic carpal tunnel syndrome, an area of constriction in the substance of the median nerve is frequently noted. In a prospective study of 30 patients, the central point of the constricted part of the nerve was determined intraoperatively and found to be, on average, 2.5 (range 2.2–2.8) cm from the distal wrist crease. This point always corresponded to… Continue reading
Return to top of page