MyMedR

Outcome of reconstruction for duplication of the thumb in adults aged over 40

Manohar A, Beard AJ

Hand Surg, 2011;16(2):207-10.

Congenital duplication of the thumb is usually reconstructed by 18 months of age. This paper reports satisfactory outcome following reconstruction of two Wassel Type IV duplicate thumbs in adults aged over 40. Both achieved a good outcome based on Tada's criteria and a subjective Visual analogue score 8.

Matched MeSH terms: Thumb/abnormalities*; Thumb/surgery

Simultaneous dislocations of the carpometacarpal and metacarpophalangeal joints of the thumb

Ibrahim S, Noor MA

Injury, 1993 May;24(5):343-4.

PMID: 8349349

Matched MeSH terms: Thumb/injuries*; Thumb/surgery

Fulltext Aeromonas hydrophila hand infection complicating an open Rolando fracture: a case report

Sambandan S

Med J Malaysia, 1985 Mar;40(1):38-40.

PMID: 3831733

A case of Aeromonas hydrophila infection complicating an open Rolando's fracture of the hand is reported. Only two cases, both complicating open tibial fractures have been reported in the literature previously.' ,2 The organism was resistant to the usual antimicrobial (ampicillin and cloxacillin) used in the management of open fractures at University Hospital, Kuala Lumpur. The severity of the infection is largely dependent on the resistance of the host, and could vary from a locally spreading necrotizing cellulitis without systemic signs to a frank septicaemia with serious consequences. Early diagnosis with adequate debridement of the wound and appropriate antimicrobial to which the organisms are sensitive, are essential for effective control.

Matched MeSH terms: Thumb/injuries*

Fulltext Anatomical variations of thenar muscle of hand, among Cadavers In Universiti Putra Malaysia (UPM)

Che Norma Mat Taib, Jegathis Prushothuman, Muhammad Adib Farhan Abdullah, Mohamad Aris, Mohd Moklas

Malaysian Journal of Medicine and Health Sciences, 2019;15(107):86-86.

MyJurnal

Introduction: Detailed information of structural and functional anatomy of thenar muscle is very significant in order to improve diagnostic and various conditions of hand surgeries so that the function of hand movement can be re-stored and to prevent further iatrogenic injuries. Methods: In this study, fifty hands were dissected to determine the variation in each of the thenar muscle. Results: Only the abductor pollicis brevis showed significant findings. Normal formation of one belly in abductor pollicis brevis represented 72.0% (18) and 84.0% (21) for the left and right hands, respectively. Variations according to the number of belly of the abductor pollicis brevis were also observed. One of the variations is the absence of the abductor pollicis brevis, 4.0% (1) in the right hand. Two belly formations of abductor pollicis brevis were observed, 28.0% (7) and 12.0% (3) for left and right sides of hand respectively. Thus, more variations were observed to occur on the left hand (7) compared to the right hand (4). Many studies describe about the variations of each thenar muscle, but few literatures were found discussing on the association of thenar muscle variation with the sides of hand. Using the Fisher Exact Test, it showed that there was no significant associa-tion of variations in the thenar muscle in relation to the sides of hand. Conclusion: This study conclude that there is no consistency between variations of the thenar muscle in relation to the sides of hand. However, clinical awareness of these variations is important in the context of compartment syndrome, use of the aberrant structures as grafting material in reconstructive surgery and proper interpretation of imaging modalities.

Matched MeSH terms: Thumb

Fulltext A dataset of tree heights in mangrove and non-mangrove trees in Malaysia derived from multiple measurement methods

Saliu IS, Wolswijk G, Satyanarayana B, Fisol MAB, Decannière C, Lucas R, et al.

Data Brief, 2020 Dec;33:106386.

PMID: 33102654 DOI: 10.1016/j.dib.2020.106386

The dataset contains tree height data collected in 200 mangrove and non-mangrove trees sampled in various sites in Malaysia. Different height measurement methods were performed, including visual measurements (stick, thumb rule) and precision field instruments (clinometer, laser rangefinder and altimeter), which were compared against benchmark values obtained using an unmanned aerial vehicle (UAV) and a Leica distometer. The core data have been analysed and interpreted in the paper by Saliu et al. ''An accuracy analysis of mangrove tree height mensuration using forestry techniques, hypsometers and UAVs '' [1], in which the accuracy of each method for tree height measurement was discussed.

Matched MeSH terms: Thumb

Fulltext Strain-Reduced Micro-LEDs Grown Directly Using Partitioned Growth

Lu S, Zhang Y, Zhang ZH, Tsai PC, Zhang X, Tan ST, et al.

Front Chem, 2021;9:639023.

PMID: 33816438 DOI: 10.3389/fchem.2021.639023

Strain-reduced micro-LEDs in 50 μm × 50 μm, 100 μm × 100 μm, 200 μm × 200 μm, 500 μm × 500 μm, and 1,000 μm × 1,000 μm sizes were grown on a patterned c-plane sapphire substrate using partitioned growth with the metal-organic chemical-vapor deposition (MOCVD) technique. The size effect on the optical properties and the indium concentration for the quantum wells were studied experimentally. Here, we revealed that the optical properties can be improved by decreasing the chip size (from 1,000 to 100 µm), which can correspondingly reduce the in-plane compressive stress. However, when the chip size is further reduced to 50 μm × 50 μm, the benefit of strain release is overridden by additional defects induced by the higher indium incorporation in the quantum wells and the efficiency of the device decreases. The underlying mechanisms of the changing output power are uncovered based on different methods of characterization. This work shows the rules of thumb to achieve optimal power performance for strain-reduced micro-LEDs through the proposed partitioned growth process.

Matched MeSH terms: Thumb

Fulltext Thumb Schwannoma : A Frequent Misdiagnosis

Mooi SS, Ahmad TS

Malays Orthop J, 2016 Mar;10(1):53-54.

PMID: 28435548 MyJurnal DOI: 10.5704/MOJ.1603.010

A 32 year-old Malay lady presented with a swelling over the dorsal surface of her right thumb for 6 months. The swelling was non-tender, smooth surfaced, mobile and nonfluctuating with no bony involvement. The provisional diagnosis was ganglion cyst. Excisional biopsy did not show features of ganglion cyst as it appeared to be wellencapsulated, multi-lobulated and yellowish in colour. Histopathological examination showed that it was a schwannoma. Schwannomas are relatively rare benign tumours which are frequently misdiagnosed. In this case, it was misdiagnosed both as a ganglion and a lipoma.

Matched MeSH terms: Thumb

Fulltext Metacarpal Lengthening Of The Thumb Via Distraction Osteogenesis: A Case Report

Chung WH, Eo CK, Muspirah Z, Sood A

Malays Orthop J, 2015 Mar;9(1):41-43.

PMID: 28435597 MyJurnal DOI: 10.5704/MOJ.1503.009

Amputation of the thumb invariably causes marked functional impairment of the hand especially, pinch and grasp functions. In rural areas where highly skilled microvascular surgeries are not available, distraction osteogenesis provides an easy and safe alternative of thumb reconstruction. We report a case of crush injury of the right hand in a 37 year old gentleman in which the right thumb was amputated at the level of the proximal phalanx. Metacarpal lengthening of the thumb was performed by using distraction osteogenesis.

Matched MeSH terms: Thumb

Statistical shape modelling of the first carpometacarpal joint reveals high variation in morphology

Rusli WMR, Kedgley AE

Biomech Model Mechanobiol, 2020 Aug;19(4):1203-1210.

PMID: 31754950 DOI: 10.1007/s10237-019-01257-8

The first carpometacarpal (CMC) joint, located at the base of the thumb and formed by the junction between the first metacarpal and trapezium, is a common site for osteoarthritis of the hand. The shape of both the first metacarpal and trapezium contributes to the intrinsic bony stability of the joint, and variability in the morphology of both these bones can affect the joint's function. The objectives of this study were to quantify the morphological variation in the complete metacarpal and trapezium and determine any correlation between anatomical features of these two components of the first CMC joint. A multi-object statistical shape modelling pipeline, consisting of scaling, hierarchical rigid registration, non-rigid registration and projection pursuit principal component analysis, was implemented. Four anatomical measures were quantified from the shape model, namely the first metacarpal articular tilt and torsion angles and the trapezium length and width. Variations in the first metacarpal articular tilt angle (- 6.3°

Matched MeSH terms: Thumb

Fulltext Macrodactyly and poliosis in tuberous sclerosis complex

Sasongko TH, Ismail NF, Nik Mohd Ariff NA, Zabidi-Hussin ZA

Jpn J Clin Oncol, 2014 Nov;44(11):1130.

PMID: 25320338 DOI: 10.1093/jjco/hyu157

Matched MeSH terms: Thumb/pathology*; Thumb/radiography

Flexor pollicis longus rupture following acupuncture for trigger thumb: a case report

Liew SK, Teh KK

Acupunct Med, 2021 08;39(4):398-399.

PMID: 33256436 DOI: 10.1177/0964528420959085

Matched MeSH terms: Thumb/injuries; Thumb/surgery

Fulltext Non-Traumatic Snapping Tendon on the Dorsal Aspect of the Thumb: A Diagnostic Challenge

Kesu Belani L, Abdullah S, Soh EZF, Abd Jabar F, Nasseri Z

Cureus, 2021 Apr 11;13(4):e14417.

PMID: 33987066 DOI: 10.7759/cureus.14417

A snapping tendon on the dorsal aspect of the thumb is a rare condition as opposed to the common triggering on the volar aspect of the thumb. This condition is known as triggering of the extensor pollicis longus (EPL). A 21-year-old female presented with a clicking or snapping sensation that was felt on the dorsum of her thumb when it is extended. There was no history of trauma. She worked in an ice-cream parlor with repetitive scooping ice-cream motions. Her triggering immediately resolved on releasing the EPL fascia ulnar to Lister's tubercle. Upon wake-up surgery, we could immediately confirm this. We recommend dynamic ultrasound as an investigation and do not recommend MRI. The surgical method of choice is either wake-up surgery or wide-awake local anesthesia no tourniquet (WALANT) surgery.

Matched MeSH terms: Thumb

Fulltext Multiple supernumerary teeth in a child with Rubinstein-Taybi syndrome: a rare feature

Marimuthoo, Thavamalar, Sockalingam,S. Nagarajan M.P.

Archives of Orofacial Sciences, 2014;9(1):1-5.

MyJurnal

Rubinstein-Taybi syndrome is a multiple anomalies congenital disorder characterised by broad thumb and halluces, facial dysmorphism with mental and growth retardation. Oral features include small mouth, retro and micronagthic jaws, highly arched and narrow palate. Dental anomalies such as teeth with talon cusps and screwdriver shaped permanent incisors together with crowded teeth are common features in these patients. Although hyperdontia is said to be one of the features of this condition, nevertheless, presence of multiple supernumerary teeth has never been documented. This report highlighted a case of an eleven-year-old boy with Rubinstein-Taybi syndrome referred for unerupted permanent incisors who exhibited multiple supernumerary teeth radiographically.

Matched MeSH terms: Thumb

Fulltext Functional specialisation and connectivity in cerebral motor cortices : a single subject study using fMRI and statistical parametric mapping

Ahmad Nazlim Yusoff, Mohd Harith Hashim, Mohd Mahadir Ayob, Iskandar Kassim, Nur Hartini Mohd Taib, Wan Ahmad Kamil Wan Abdullah

Malaysian Journal of Medicine and Health Sciences, 2006;2(2):37-60.

MyJurnal

Objective: A baseline functional magnetic resonance imaging (fMRI) study was carried out on a healthy right-handed male subject to attain further insights into the basic neuronal control mechanisms of bimanual and unimanual movements of hand fingers, an area that is still not fully understood. Methods : The study used the basic unimanual and bimanual movements of the left- and right-hand fingers to stimulate neuronal activity in the cerebral cortices. The subject was instructed to sequentially press his fingers either unimanually (UNI) or bimanually (BIM), against the thumb in a consistent alternative manner during the functional scans. The data were analysed using the MATLAB and SPM2 software packages. Results : Brain activations obtained via the F-test indicate a larger activation area as compared to that obtained from the T-test. The results showed that, the activated brain regions due to the self-paced finger movements are the precentral and postcentral gyrii covering the primary motor, premotor and somatosensory primer areas. The activestate signal intensity was found to be significantly (p < 0.05) higher than that of the resting-state. For UNI, brain activation showed contra-laterality with a larger activation area and a higher signal intensity at the point of maximum intensity for the left-hand finger
movement (UNIleft) compared to the right-hand finger movement (UNIright). Small ipsilateral activations were observed during UNIright and UNIleft. For BIM, the activation was observed in both hemispheres with the right hemisphere showing a higher signal intensity and coverage. The results support the fact that for a right-handed person performing either UNI or BIM type of movement, the activated motor area on the right hemisphere of the brain (movement of the left hand fingers) experience a higher intensity and larger coverage of hemodynamic response compared to the left hemisphere of the brain (movement of the right hand fingers). Analyses performed on the activated regions of interest (ROI) by
comparing the unimanual and bimanual types of activations revealed that during BIM, there are voxels in the left hemisphere controlling the movement of the left hand fingers (BIMleft) and voxels in the right hemisphere controlling the movement of the right hand fingers (BIMright). The interactions observed in this study resemble the existence of interhemispheric connection between both hemispheres during BIM. Conclusion : Although this is a single subject study, the hemodynamic response and the neuronal control mechanism in the cerebral cortices based on the BOLD mechanism can be studied and evaluated using fMRI and SPM.

Matched MeSH terms: Thumb

Fulltext Resection of thumb metacarpal ewing sarcoma and primary reconstruction with non-vascularized osteoarticular metatarsal autograft

Ariff, M.S., Faisham, W.I., Krishnan, J., Zulmi, W.

International Medical Journal Malaysia, 2015;14(1):103-107.

MyJurnal

Ewing sarcoma is a primary bone malignancy that rarely occurs in the hand. Resection and reconstruction will usually result in reduced or loss of thumb function. We describe a case of successful transplantation of non- vascularized osteoarticular second metatarsal autograft following wide resection of Ewing sarcoma of first metacarpal in an 11-year-old girl. The capsule of the graft’s metatarso-phalangeal joint was repaired to achieve mobility of the joint. This enabled preservation of thumb function by a relatively simple surgical technique. Detailed surgical procedures and excellence function after 2 years following surgery are described.

Matched MeSH terms: Thumb

Fulltext Injury to ulnar collateral ligament of thumb

Madan SS, Pai DR, Kaur A, Dixit R

Orthop Surg, 2014 Feb;6(1):1-7.

PMID: 24590986 DOI: 10.1111/os.12084

Injury of the ulnar collateral ligament (UCL) of thumb can be incapacitating if untreated or not treated properly. This injury is notorious for frequently being missed by inexperienced health care personnel in emergency departments. It has frequently been described in skiers, but also occurs in other sports such as rugby, soccer, handball, basketball, volleyball and even after a handshake. The UCL of the thumb acts as a primary restraint to valgus stress and is injured if hyperabduction and hyperextension forces are applied to the first metacarpophalangeal joint. The diagnosis is best established clinically, though MRI is the imaging modality of choice. Many treatment options exist, surgical treatment being offered depending on various factors, including timing of presentation (acute or chronic), grade (severity of injury), displacement (Stener lesion), location of tear (mid-substance or peripheral), associated or concomitant surrounding tissue injury (bone, volar plate, etc.), and patient-related factors (occupational demands, etc.). This review aims to identify the optimal diagnostic techniques and management options for UCL injury available thus far.

Matched MeSH terms: Thumb/injuries*

Partial anterior interosseous nerve palsy: isolated neuropraxia of the branch to flexor pollicis longus

Haflah NH, Rashid AH, Sapuan J

Hand Surg, 2010;15(3):221-3.

PMID: 21089198

Anterior interosseous nerve palsy is rare. Isolated neuropraxia of its branch to the flexor pollicis longus is even rarer. We present a case of a 24-year-old man who presented with weakness of his left thumb flexion after sustaining closed fracture of the proximal third of his left radius. On exploration, the anterior interosseous nerve and its branches was found to be intact as was the flexor pollicis longus. Electrophysiological studies demonstrated acute left anterior interosseous nerve neuropathy. Electromyography showed discrete motor unit at the flexor pollicis longus. Two months later the patient had full recovery of the flexor pollicis longus. We would like to highlight this rare occurrence and present a detailed history of this case to increase awareness amongst clinicians regarding this condition.

Matched MeSH terms: Thumb/innervation*

Rare anatomical variant: arterial circle in palm and at the base of the thumb

Vollala VR, Nagabhooshana S, Bhat SM, Rodrigues V, Rao M, Pamidi N, et al.

Rom J Morphol Embryol, 2008;49(4):585-7.

PMID: 19050813

In this article, we describe anomalous formation, distribution of superficial palmar arch and an arterial circle at the base of the thumb found during routine dissection classes in the right hand of a 45-year-old male cadaver. These variations are unique and provide significant information to surgeons dissecting the hand region.

Matched MeSH terms: Thumb/blood supply*

Bilateral Motor Cortex Control for Left Thumb Movement: An Incidental Finding Through Functional MRI (fMRI)

Rashid A, Suppiah S, Hoo FK, Masiran R

BMJ Case Rep, 2018 Jan 04;2018.

PMID: 29301796 DOI: 10.1136/bcr-2017-221129

We report a case of a healthy, right-hand dominant young male who was a volunteer for a pilot run of a functional MRI (fMRI) study. The fMRI was performed with a 3.0 Tesla MRI scanner using a finger tapping task-based activity. The subjects were instructed to perform flexion of the right thumb and left thumb consecutively (activation task) and neuronal activation in bilateral primary motor cortex (PMC) were observed during each task. One particular subject demonstrated bilateral PMC activation during the left-thumb movement task, instead of the expected activation of the contralateral PMC alone.

Matched MeSH terms: Thumb/physiology*

Aesthetic refinements in second toe-to-thumb transfer surgery

Zhao J, Tien HY, Abdullah S, Zhang Z

Plast Reconstr Surg, 2010 Dec;126(6):2052-2059.

PMID: 21124145 DOI: 10.1097/PRS.0b013e3181f44994

BACKGROUND: Second toe-to-thumb transfer is a good alternative to using the great toe for reconstruction of the thumb. It achieves excellent function and reduces morbidity to the donor foot. However, cosmesis is often poor. The second toe has three unattractive features, a narrow "neck," a bulbous tip, and a short nail.

METHODS: The authors describe a modified second toe transfer that addresses cosmesis in six patients. These include (1) harvesting a flap from the adjacent side of the great toe and insetting it into the volar aspect of the second toe to give more bulk, (2) making skin excisions on each side of the tip to reduce the bulbous appearance, and (3) excising the eponychium to produce apparent lengthening of the nail.

RESULTS: The mean follow-up period was 18 months (range, 6 to 36 months). The procedure resulted in good function and improved cosmesis in all six cases. Part of the great toe flap was lost in one case. The mean two-point discrimination in the transferred toes was 10.1 mm, with protective sensation present in the flaps. The range of motion of the transferred toe was 14 to 38 degrees at the metatarsophalangeal joint, 16 to 55 degrees at the proximal interphalangeal joints, and 20 to 36 degrees in the distal interphalangeal joints. All patients except one were happy with the appearance of the transferred toe.

CONCLUSION: This novel approach will allow patients to take advantage of the lower morbidity to the donor site afforded by second toe-to-thumb transfer and provide the patients with a more aesthetic appearance of the new thumb.

Matched MeSH terms: Thumb/injuries*; Thumb/innervation

Displaying publications 1 - 20 of 31 in total