Examination of the Hand
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Intrinsic Hand Muscles of the Japanese Monkey, Macaca Fuscata
Anthropol.Sci. 102(Suppl.), 85-95,1994 Intrinsic Hand Muscles of the Japanese Monkey, Macaca fuscata TOSHIHIKO HOMMA AND TATSUO SAKAI Department of Anatomy, School of Medicine, Juntendo University, Hongo 2-1-1, Bunkyo-ku, Tokyo 113, Japan Received December 24, 1993 •ôGH•ô Abstract•ôGS•ô Anatomy of the intrinsic hand muscles in the Japanese monkeys was studied with an improved method to dissect the muscles and nerves in water after removal of the skeletal framework. The thenar eminence contained four muscles, namely m. abductor pollicis brevis, m. opponens pollicis, m, flexor pollicis brevis, and m. adductor pollicis. The hypothenar eminence contained four muscles, namely m. palmaris brevis, m. abductor digiti minimi, m. flexor digiti minimi brevis, and m. opponens digiti minimi. Majority of the thenar muscles are fused more or less with each other, so that clear separation of these muscles was difficult. The lumbrical muscles arose from the palmar parts of four main tendons of the deep flexor muscle to the second, third, fourth, and fifth digits. The mm, contrahentes arose mainly from a medial tendinous septum attached on the palmar surface to the third metacarpus, and included three muscles destined to the second, fourth and fifth digits. The interossei were found on the radial side of the second, third, fourth and fifth finger as well as on the ulnar side of the second, third and fourth finger. The intrinsic hand muscles in the Japanese monkey received innervation either from the median or the ulnar nerve. Branching pattern of these nerves to the individual muscles was fundamentally similar to those in man except for the fact that the median and the ulnar nerve in the Japanese monkey do not communi cateto make a loop in the thenar muscles. -
Pronator Syndrome: Clinical and Electrophysiological Features in Seven Cases
J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.39.5.461 on 1 May 1976. Downloaded from Journal ofNeurology, Neurosurgery, and Psychiatry, 1976, 39, 461-464 Pronator syndrome: clinical and electrophysiological features in seven cases HAROLD H. MORRIS AND BRUCE H. PETERS From the Department ofNeurology, University of Texas Medical Branch, Galveston, Texas, USA SYNOPSIS The clinical and electrophysiological picture of seven patients with the pronator syndrome is contrasted with other causes ofmedian nerve neuropathy. In general, these patients have tenderness over the pronator teres and weakness of flexor pollicis longus as well as abductor pollicis brevis. Conduction velocity of the median nerve in the proximal forearm is usually slow but the distal latency and sensory nerve action potential at the wrist are normal. Injection of corticosteroids into the pronator teres has produced relief of symptoms in a majority of patients. Protected by copyright. In the majority of isolated median nerve dys- period 101 cases of the carpal tunnel syndrome functions the carpal tunnel syndrome is appropri- and the seven cases of the pronator syndrome ately first suspected. The median nerve can also reported here were identified. Median nerve be entrapped in the forearm giving rise to a conduction velocity determinations were made on similar picture and an erroneous diagnosis. all of these patients. The purpose of this report is to draw full attention to the pronator syndrome and to the REPORT OF CASES features which allow it to be distinguished from Table 1 provides clinical details of seven cases of the median nerve entrapment at other sites. -
Wrist and Hand Examina[On
Wrist and Hand Examinaon Daniel Lueders, MD Assistant Professor Physical Medicine and Rehabilitaon Objecves • Understand the osseous, ligamentous, tendinous, and neural anatomy of the wrist and hand • Outline palpable superficial landmarks in the wrist and hand • Outline evaluaon of and differen.aon between nerves to the wrist and hand • Describe special tes.ng of wrist and hand Wrist Anatomy • Radius • Ulna • Carpal bones Wrist Anatomy • Radius • Ulna • Carpal bones Wrist Anatomy • Radius • Ulna • Carpal bones Wrist Anatomy • Radius • Ulna • Carpal bones Inspec.on • Ecchymosis • Erythema • Deformity • Laceraon Inspec.on • Common Finger Deformies • Swan Neck Deformity • Boutonniere Deformity • Hypertrophic nodules • Heberden’s, Bouchard’s Inspec.on • Swan Neck Deformity • PIP hyperextension, DIP flexion • Pathology is at PIP joint • Insufficiency of volar/palmar plate and suppor.ng structures • Distally, the FDP tendon .ghtens from PIP extension causing secondary DIP flexion • Alternavely, extensor tendon rupture produces similar deformity Inspec.on • Boutonniere Deformity • PIP flexion, DIP hyperextension • Pathology is at PIP joint • Commonly occurs from insufficiency of dorsal and lateral suppor.ng structures at PIP joint • Lateral bands migrate volar/palmar, creang increased flexion moment • Results in PIP “buTon hole” effect dorsally Inspec.on • Nodules • Osteoarthri.c • Hypertrophic changes of OA • PIP - Bouchard’s nodule • DIP - Heberden’s nodule • Rheumatoid Arthri.s • MCP joints affected most • Distal radioulnar joint can also be affected -
The Muscles That Act on the Upper Limb Fall Into Four Groups
MUSCLES OF THE APPENDICULAR SKELETON UPPER LIMB The muscles that act on the upper limb fall into four groups: those that stabilize the pectoral girdle, those that move the arm, those that move the forearm, and those that move the wrist, hand, and fingers. Muscles Stabilizing Pectoral Girdle (Marieb / Hoehn – Chapter 10; Pgs. 346 – 349; Figure 1) MUSCLE: ORIGIN: INSERTION: INNERVATION: ACTION: ANTERIOR THORAX: anterior surface coracoid process protracts & depresses Pectoralis minor* pectoral nerves of ribs 3 – 5 of scapula scapula medial border rotates scapula Serratus anterior* ribs 1 – 8 long thoracic nerve of scapula laterally inferior surface stabilizes / depresses Subclavius* rib 1 --------------- of clavicle pectoral girdle POSTERIOR THORAX: occipital bone / acromion / spine of stabilizes / elevates / accessory nerve Trapezius* spinous processes scapula; lateral third retracts / rotates (cranial nerve XI) of C7 – T12 of clavicle scapula transverse processes upper medial border elevates / adducts Levator scapulae* dorsal scapular nerve of C1 – C4 of scapula scapula Rhomboids* spinous processes medial border adducts / rotates dorsal scapular nerve (major / minor) of C7 – T5 of scapula scapula * Need to be familiar with on both ADAM and the human cadaver Figure 1: Muscles stabilizing pectoral girdle, posterior and anterior views 2 BI 334 – Advanced Human Anatomy and Physiology Western Oregon University Muscles Moving Arm (Marieb / Hoehn – Chapter 10; Pgs. 350 – 352; Figure 2) MUSCLE: ORIGIN: INSERTION: INNERVATION: ACTION: intertubercular -
Morphological Study of Palmaris Longus Muscle
International INTERNATIONAL ARCHIVES OF MEDICINE 2017 Medical Society SECTION: HUMAN ANATOMY Vol. 10 No. 215 http://imedicalsociety.org ISSN: 1755-7682 doi: 10.3823/2485 Humberto Ferreira Morphological Study of Palmaris Arquez1 Longus Muscle ORIGINAL 1 University of Cartagena. University St. Thomas. Professor Human Morphology, Medicine Program, University of Pamplona. Morphology Laboratory Abstract Coordinator, University of Pamplona. Background: The palmaris longus is one of the most variable muscle Contact information: in the human body, this variations are important not only for the ana- tomist but also radiologist, orthopaedic, plastic surgeons, clinicians, Humberto Ferreira Arquez. therapists. In view of this significance is performed this study with Address: University Campus. Kilometer the purpose to determine the morphological variations of palmaris 1. Via Bucaramanga. Norte de Santander, longus muscle. Colombia. Suramérica. Tel: 75685667-3124379606. Methods and Findings: A total of 17 cadavers with different age groups were used for this study. The upper limbs region (34 [email protected] sides) were dissected carefully and photographed in the Morphology Laboratory at the University of Pamplona. Of the 34 limbs studied, 30 showed normal morphology of the palmaris longus muscle (PL) (88.2%); PL was absent in 3 subjects (8.85% of all examined fo- rearm). Unilateral absence was found in 1 male subject (2.95% of all examined forearm); bilateral agenesis was found in 2 female subjects (5.9% of all examined forearm). Duplicated palmaris longus muscle was found in 1 male subject (2.95 % of all examined forearm). The palmaris longus muscle was innervated by branches of the median nerve. The accessory palmaris longus muscle was supplied by the deep branch of the ulnar nerve. -
Pain in the Thenar Eminence: a Rare Case of Atypical Angina
782 BRITISH MEDICAL JOURNAL VOLUME 281 20 SEPTEMBER 1980 Comment Treatment with propranolol 80 mg three times daily produced some improvement, but she continued to have spontaneous attacks of pain. Deaths from rhesus haemolytic disease of the newborn have been Verapamil 120 mg three times daily produced further improvement, but Br Med J: first published as 10.1136/bmj.281.6243.782 on 20 September 1980. Downloaded from declining for many years, but since the introduction of anti-D the fall she continued to have pain while resting so a bypass graft was considered. has been much steeper.5 The patient refused surgery, and the dose of verapamil was increased to It is not possible to draw definite conclusions from data based on 120 mg four times daily. Over the next month her symptoms resolved, only two years, but trends that would be expected if the prophylaxis with an increase in treadmill exercise time to 5-2 minutes and only one was successful (assuming treatment of rhesus haemolytic disease of episode of notable ST depression in 24 hours of continuous monitoring. the newborn remains substantially unchanged) may be assessed. Given the natural history of worsening of the disease in consecutive 2mm] babies, the reduction in deaths is more likely to be seen initially in the livebom babies. This is because mothers of stillborn babies will usually have been immunised for longer than mothers of liveborn CC5 + + babies-and many of them will still be in categories 1 and 2. On the other hand, the numbers in categories 3 and 4 should remain approximately constant since in neither group is prophylactic anti-D administered. -
Upper and Lower Extremity Nerve Conduction Studies Kelly G
2019 Upper and Lower Extremity Nerve Conduction Studies Kelly G. Gwathmey October 18, 2019 Virginia Commonwealth University 2019 Financial Disclosure I have received speaking and consulting honoraria from Alexion Pharmaceuticals. 2019 Warning Videotaping or taking pictures of the slides associated with this presentation is prohibited. The information on the slides is copyrighted and cannot be used without permission and author attribution. 2019 Outline for Today’s talk • Upper extremity nerve conduction studies o Median nerve o Ulnar nerve o Radial nerve o Median comparison studies o Medial antebrachial cutaneous nerve o Lateral antebrachial cutaneous nerve • Lower extremity nerve conduction studies o Fibular nerve o Tibial nerve o Sural nerve o Femoral nerve • Saphenous • Lateral femoral cutaneous • Phrenic nerve • Facial nerve • Anomalous Innervations 2019 Median nerve anatomy • Median nerve is formed by a combination of: o Lateral cord (C6-7) supplies the sensory fibers to the thumb, index, middle finger, proximal median forearm, and thenar eminence. o Medial cord (C8-T1) provides motor fibers to the distal forearm and hand. • The median nerve innervates the pronator teres, then gives branches to the flexor carpi radialis, flexor digitorum superficialis, and palmaris longus. • Anterior Interosseus Nerve (AIN)- innervates the flexor pollicis longus, flexor digitorum profundus (FDP) (digits 2 and 3), and pronator quadratus. Preston, David C., MD; Shapiro, Barbara E., MD, PhD. Published January 1, 2013. Pages 267-288. © 2013. 2019 Median nerve anatomy • Proximal to the wrist- the palmar cutaneous sensory branch (sensation over the thenar eminence) • Through the carpal tunnel- Motor division goes to first and second lumbricals o Recurrent thenar motor branch the thenar eminence (opponens, abductor pollicis brevis, and superficial head of flexor pollicis brevis) • Sensory branch that goes through the carpal tunnel supplies the medial thumb, index finger, middle finger and lateral half of the ring finger. -
Carpal Tunnel Syndrome • Link to This Article Online for CPD/CME Credits Scott D Middleton,1 Raymond E Anakwe2
EDUCATION CLINICAL REVIEW Carpal tunnel syndrome • Link to this article online for CPD/CME credits Scott D Middleton,1 Raymond E Anakwe2 1Department of Trauma and Orthopaedic Surgery, Royal Carpal tunnel syndrome is the most commonly diagnosed Infirmary of Edinburgh, Edinburgh, SOURCES AND SELECTION CRITERIA compression neuropathy of the upper limb. Patients may UK We searched PubMed, the Cochrane Library, and the 2Department of Trauma and present to general practitioners, physiotherapists, hand Cumulative Index to Nursing and Allied Health Literature Orthopaedic Surgery, St Mary’s therapists, or surgeons with a variety of symptoms. Sev- to identify source material for this review. We examined Hospital, Imperial College NHS eral studies have examined the epidemiology, diagno- available evidence published in the English language for Trust, London W1 2NY, UK Correspondence to: R E Anakwe sis, and treatment of carpal tunnel syndrome. We review the diagnosis and treatment of carpal tunnel syndrome. [email protected] these resources to provide an evidence based guide to The search terms used were “carpal tunnel”, “carpal Cite this as: BMJ 2014;349:g6437 the diagnosis and treatment of carpal tunnel syndrome. tunnel syndrome”, “tingling fingers”, “median nerve doi: 10.1136/bmj.g6437 compression”, and “compression neuropathy”. There were no well conducted large randomised trials. We selected and What is carpal tunnel syndrome and who gets it? examined smaller randomised trials as well as case series, Carpal tunnel syndrome encompasses a collection of cohort studies, and observational reports where these symptoms: patients often mention altered sensation or provided the only evidence. pain in the hand, wrist, or forearm. -
Compressive Mononeuropathies of the Upper Extremity in Chronic Paraplegia
ParapkgW 29 (1991) 17-24 © 1991 International Medical Society of Paraplegia Paraplegia Compressive Mononeuropathies of the Upper Extremity in Chronic Paraplegia G. Davidoff, MD, R. Werner, MD, W. Waring, MD Department of Physical Medicine and Rehabilitation, University of Michigan Medical Center, and Rehabilitation Medicine Service, Veterans Affairs Medical Center, Ann Arbor, Michigan, USA. Summary Controversy exists with regard to the actual prevalence of compressive mononeuropathies at the wrist which may occur following chronic paraplegia. Thirty one chronic paraplegics, with a mean age of 37'9 years (range 20-68 years), and mean time since injury of 9'7 years (range 1-28 years), were studied with a comprehensive neurologic and electrodiagnostic (EDX) assessment. No patient had any clinical or EDX evidence of a peripheral polyneuropathy. The diagnosis of a median mononeuropathy at the wrist was determined by the following criteria: (a) prolonged median sensory distal latency > ipsilateral ulnar sensory distal latency 2 0·5 msec; (b) a median mid-palmar sensory latency> ipsilateral ulnar mid-palmar sensory latency of 2 0'3 msec; or (c) a median motor distal latency 2 l' 7 milliseconds as compared to the ipsilateral ulnar motor distal latency. Ulnar mononeuropathy at the wrist or across the elbow was also characterised. The EDX criteria for a median mononeuropathy at the wrist was met in 55% of subjects (24% of these with bilateral presentations). The location of ulnar mononeuropathies included: two at the superficial sensory branch at the wrist, one at the deep motor branch at the wrist, and three patients with a conduction block across the elbow. -
Functional Human Anatomy Lab #7 Upper Extremity Musculature
Lab 7 FUNCTIONAL HUMAN ANATOMY LAB #7 UPPER EXTREMITY MUSCULATURE The following tips will help you in naming the muscles of the forearm and hand: The Ulna is located on the pinky side of the wrist, the Radius is located on the thumb side of the wrist. This will be maintained regardless of hand position (pronated vs. supinated). The anterior side of the forearm and the palmar side of the hand contain muscles that perform flexion and may have flexor in the name. The posterior side of the forearm and the dorsal side of the hand contain muscles that perform extension and may have extensor in the name. Most muscles in the anterior forearm originate or appear to originate from the medial epicondyle of the Humerus. Most muscles in the posterior forearm originate or appear to originate from the lateral epicondyle of the Humerus. Any muscle that attaches to the 1st digit (thumb) has Pollicus in the name Any muscle that attaches to the 2nd digit (index finger) has Indicis in the name Any muscle that attaches to the 5th digit (pinky finger) has Digiti Minimi in the name Any muscle that attaches to all of the digits (2-5) has Digitorum in the name Radialis muscles perform radial deviation Ulnaris muscles perform ulnar deviation MUSCULATURE: BACK/UPPER EXTREMITY: Latissimus Dorsi Medial attachment: may occasionally have some attachment thoracolumbar fascia (spinous processes of inferior 6 thoracic vertebre along the inferior angle of the scapula and all lumbar vertebre, iliac crest) and inferior 3 or 4 ribs Lateral attachment: floor of interturbicular (bicipital) groove Function: Adduction or extension of the Arm at the Shoulder. -
A Rare Anatomic Variation of the Superficial Palmar Branch of the Radial Artery Causing Pain
Surg Radiol Anat DOI 10.1007/s00276-017-1936-6 ANATOMIC VARIATIONS A rare anatomic variation of the superficial palmar branch of the radial artery causing pain Georg Singer1 · Robert Marterer2 · Holger Till1 · Barbara Schmidt1 Received: 31 August 2017 / Accepted: 23 October 2017 © The Author(s) 2017. This article is an open access publication Abstract Introduction Background The superficial palmar branch of the radial artery (SPBRA) normally pierces through the thenar mus- The superficial palmar branch of the radial artery (SPBRA) cles and unites with the ulnar artery to form the superficial arises from the radial artery at the level of the distal forearm. palmar arch. Rarely, a subcutaneous course of the SPBRA After passing the carpus, the vessel normally pierces through is described in which the artery lies superficial to the thenar the thenar muscles to unite with a branch of the ulnar artery muscles. to form the superficial palmar arch [6]. Nevertheless, a Case report We report about a 17-year-old female patient number of different variations in size, branching patterns with pain at the thenar eminence due to a unique course of and course of the SPBRA have been reported [4]. Rarely, the SPBRA. Duplex sonography and magnetic resonance a subcutaneous course of the SPBRA is described in which angiography revealed a subcutaneous course of the artery the artery lies superficial to the thenar muscles [4]. Usually over the thenar muscles. Arterial transposition by splitting this rare variation does not causes clinical complications, of the abductor pollicis brevis muscle was performed. At but the present case report describes a 17-year-old female 12-month follow-up, the patient is still free of symptoms. -
Tendon Transfers to Restore Opposition of the Thumb
TENDON TRANSFERS TO RESTORE OPPOS I TION OF THE THUMB Pr oef schrift ter verkrijging van de graad van doctor in de geneeskunde aan de medische faculteit te Rotterdam, op gezag van de decaan D. C. den Haan, hoogleraar in de faculteit der geneeskunde, regen de bedenkingen van de faculteit der geneeskunde te verdedigen op 8 mei 1970 te 16.00 uur door Johannes M achiel Ramselaar gcboren te Amcrsfoort in 1936 H. E. STENFERT KROESE N.Y. I LEIDEN 1970 PROMOTOR: PROF. DR. H. MULLER CO-REFERENT: DR. J. C. H. VANDERMEULEN ISBN 90.207.00 10.3 To Irma CONTENTS INTRODU C T.ION I IX I. F UNCTIONAL A N ATOMY OF THE THUMB I I Movements m the carpo-metacarpal joint I I Movements in the metacarpo-phalangeal joint I 5 Movements in the interphalangeal joint I 6 Function of the intrinsic muscles I 6 Function of the extrinsic muscle5 I 9 Nerve supply of the intrinsic muscles I 12 11. FUN C TIONAL LOSS IN PARALYSIS OF INTRINSIC THUMB M USC LES I 15 Paralysis of radial thenar muscles I 15 Paralysis of ulnar thenar muscles 1 16 Paralysis of radial and ulnar thenar muscles I 17 Prognosis of median and ulnar nerve lesions I 19 Ill. R ECONSTRU C T ION OF THE OPPOSITION I 21 Indications I 21 Prerequisites I 22 Historical background I 24 Methods I 25 muscle transfers: tendon transfers: transfer of the flexor poll icis longus tendon: transfer of the abductor pollicis longus tendon: transfer of the extensor pollicis brevis tendon: transfer of an extensor tendon of a finger: transfer of the tendon of a wrist extensor: transfer of the palmaris longus tendon: transfer of a fl exor digitorum superficialis tendon: transfer of a flexor digi torum profundus tendon.