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Flexor digitorum superficialis

Mineyuki Zukawa, Ryusuke Osada, Hiroto Makino, Tomoatsu Kimura
BACKGROUND: The purpose of this study was to investigate the clinical outcome of the wide-awake tendon reconstruction for chronic rupture of the flexor pollicis longus (FPL) tendon with evaluation of the voluntary active contraction distance (ACD) of the ruptured musculotendinous unit. METHODS: Eleven consecutive patients underwent tendon reconstruction under wide-awake surgery for chronic tendon rupture of the FPL. If the total of the passive distraction distance (PDD) and the ACD of the ruptured FPL musculotendinous unit was greater than 30 mm, tendon grafting was performed...
October 10, 2018: Plastic and Reconstructive Surgery
Danielle S Morel, Pedro J Marín, Eloá Moreira-Marconi, Carla F Dionello, Mario Bernardo-Filho
The aim of this study was to investigate the acute effects of whole-body vibration exercises (WBVE) in different positions on muscular activity of flexor digitorum superficialis (FD), wrist extensor (ED), and handgrip strength (HG) of healthy men. Fifteen participants have performed 5 test sets each one consisting of HG strength measurement and 1-minute WBVE intervention (frequency: 50 Hz, amplitude: 1.53 mm, synchronous tri-planar oscillating/vibratory platform), that could be control (no exposition to vibration), squat (30 seconds of rest and 30 seconds of WBVE in squat position), or push-up (30 seconds of rest, and 30 seconds of WBVE in push-up position)...
October 2018: Dose-response: a Publication of International Hormesis Society
Daniel R Ballesteros, Pedro L Forero, Luis E Ballesteros
BACKGROUND: The accessory head of the flexor pollicis longus (AHFPL) has an oblique trajectory from medial to lateral aspect of the forearm below the flexor digitorum superficialis muscle and then joins the flexor pollicis longus muscle. When the anterior interosseous nerve (AIN) courses underneath the muscle belly of the AHFPL an entrapment neuropathy may occur, known as anterior interosseous nerve syndrome (AINS). MATERIALS AND METHODS: This descriptive cross-sectional study evaluated 106 fresh upper extremities...
October 9, 2018: Folia Morphologica (Warsz)
Nabiollah Bakhtiari, Iman Dianat, Moein Nedaei
The effects of five different handle shapes of masons' trowels on muscle activity of the arm and forearm muscles (through electromyographic [EMG] measurements of the biceps brachii [BB], flexor digitorum superficialis [FDS], pronator teres [PT] and extensor carpi ulnaris [ECU]) were evaluated in a simulated masonry task. The results showed a significant effect of handle shape on the muscle activity of the BB, PT and ECU. The muscle activity of the extensor (ECU) and flexor (FDS) were generally larger than those of the supinator (BB) and pronator (PT)...
October 1, 2018: International Journal of Occupational Safety and Ergonomics: JOSE
Edie Benedito Caetano, Luiz Angelo Vieira, João José Sabongi Neto, Maurício Benedito Ferreira Caetano, Rodrigo Guerra Sabongi
Objective: The goal of this study was to describe anatomical variations and clinical implications of anterior interosseous nerve. In complete anterior interosseous nerve palsy, the patient is unable to flex the distal phalanx of the thumb and index finger; in incomplete anterior interosseous nerve palsy, there is less axonal damage, and either the thumb or the index finger are affected. Methods: This study was based on the dissection of 50 limbs of 25 cadavers, 22 were male and three, female...
September 2018: Revista Brasileira de Ortopedia
Ye Jiang, Li Wang, Jie Lao, Xin Zhao
Contralateral C7 (cC7) root transfer to the healthy side is the main method for the treatment of brachial plexus root injury. A relatively new modification of this method involves cC7 root transfer to the lower trunk via the prespinal route. In the current study, we examined the effectiveness of this method using electrophysiological and histological analyses. To this end, we used a rat model of total brachial plexus injury, and cC7 root transfer was performed to either the lower trunk via the prespinal route or the median nerve via a subcutaneous tunnel to repair the injury...
November 2018: Neural Regeneration Research
Nagarajan Manickaraj, Leanne M Bisset, Justin J Kavanagh
OBJECTIVES: To investigate forearm muscle activity in individuals with lateral epicondylalgia (LE) when gripping at different wrist postures, and investigate the association between muscle activity and clinical characteristics of LE. METHODS: Eleven LE and 11 healthy participants performed isometric handgrips at 15% and 30% of maximum grip force (MVC). Gripping was performed in wrist extension, wrist flexion, and wrist neutral. Surface electromyography was collected from six forearm muscles...
September 1, 2018: Journal of Musculoskeletal & Neuronal Interactions
Paul J Choi, Chidinma Nwaogbe, Joe Iwanaga, Georgi P Georgiev, Rod J Oskouian, R Shane Tubbs
Introduction A reoperation for a cubital tunnel syndrome is not uncommon. Patients often complain of sensorimotor symptoms in the ulnar nerve distribution after their primary surgery. The documented etiologies for such a phenomenon include a "new" kinking of the distal ulnar nerve and a "new" compression of the ulnar nerve by the fascial septum in between or tendinous bands over the muscles of the forearm. The deep fascial plane along which the ulnar nerve travels in the forearm has had scant attention...
June 19, 2018: Curēus
Maciej Lis, Bernard Solewski, Mateusz Koziej, Ewa Walocha, Jerzy A Walocha, Wiesława Klimek-Piotrowska
The forearm is a body region of numerous anatomical variations. Due to its favorable anatomy flexor digitorum superficialis muscle (FDS) is commonly used in tendon transfer surgeries. In this study a unique combination of abnormalities was found in a single forearm: the flexor digitorum superficialis muscle penetrated by the median nerve, one of the flexor digitorum superficialis tendons early division and absence of the palmaris longus muscle. Described variation potentially may lead to the clinical manifestation of the median nerve compression and should be also considered during FDS surgery...
2018: Folia Medica Cracoviensia
Cassandra L Lipinski, Luke Donovan, Thomas J McLoughlin, Charles W Armstrong, Grant E Norte
OBJECTIVE: The flexor carpi ulnaris (FCU) and flexor digitorum superficialis (FDS) provide dynamic stabilization to the medial elbow. It remains unclear how these muscles function during progressive throwing exercises. Our objective was to compare FCU and FDS surface electromyography (sEMG) during a throwing progression. DESIGN: Crossover. SETTING: Laboratory. PARTICIPANTS: Sixteen healthy males. MAIN OUTCOME MEASURES: Participants completed a plyometric throw (PLYO), long-toss 50% (LT50 ), long-toss 75% (LT75 ), and pitch (PITCH)...
September 2018: Physical Therapy in Sport
Sara Edsfeldt, Martin Eklund, Monica Wiig
STUDY DESIGN: Observational cohort study. INTRODUCTION: Investigating prognostic factors using population-based data may be used to improve functional outcome after flexor tendon injury and repair. PURPOSE OF THE STUDY: The aim of this study is to investigate the effect of concomitant nerve transection, combined flexor digitorum profundus (FDP) and flexor digitorum superficialis (FDS) tendon transection and the age of the patient, on digital range of motion (ROM) more than 1 year after FDP tendon transection and repair in zone I and II...
July 5, 2018: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
Edie Benedito Caetano, João José Sabongi, Luiz Angelo Vieira, Maurício Ferreira Caetano, José Eduardo DE Bona, Thais Mayor Simonatto
Objective: The arcade of the flexor digitorum superficialis muscle (FDS) is an anatomical structure which has not yet been widely studied and is a site of nerve compression. The aim of this study was to analyze the arcade of the FDS muscle and its relations with the median and anterior interosseous nerves through anatomic dissections. Method: Fifty arms from 25 adult cadavers (21 males and 4 females) were dissected; 18 were previously preserved in formalin and glycerin and 7 fresh specimens were dissected in the Laboratory of Anatomy...
January 2018: Acta Ortopedica Brasileira
Logan Bale, Natasha Brandt, Naomi Enos
Digital neural loops are present in the palms of most individuals. They can arise within the common palmar digital nerves (CPDNs) or proper palmar digital nerves (PPDNs). Typically, common palmar digital arteries (CPDAs) pass through digital neural loops, however there are reports of loops forming around the superficial palmar arch or proper palmar digital arteries (PPDAs). We describe an unusual digital neural loop that involved both a CPDN and a PPDN. To our knowledge, this is the first documented case of a digital neural loop of this type and therefore anatomists and surgeons may benefit from an awareness of its existence...
2018: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Hugo Hauraix, Benjamin Goislard de Monsabert, Alexis Herbaut, Eric Berton, Laurent Vigouroux
INTRODUCTION: Because the hand joints possess a broad range of motion, the muscle length can vary importantly which might result in significant variations of the muscle force-generating capacities. However, facing the complexity of this musculoskeletal system, no study has examined the effect of hand muscles length change on muscle force. This study aimed to characterize the force-length relationship of muscles involved in wrist and metacarpophalangeal (MCP) flexion. METHODS: Eleven participants performed two sessions: i) one for the wrist flexor muscles, and ii) one for the finger flexor muscles...
June 21, 2018: Medicine and Science in Sports and Exercise
Karthik Vishwanathan, Deepak Ganjiwale
Splinting is a great domain of occupational therapy profession. Making a splint for the patient would depend on the need or requirement of the problems and deformities. Swan neck deformity is an uncommon condition, and it can be seen in rheumatoid arthritis, cerebral palsy, and after trauma. Conservative treatment of the swan neck deformity is available by different static splints only. There are very few reports of surgical correction of swan-neck deformity in benign hypermobility syndrome. This case report describes the result of novel surgical intervention and an innovative hand splint in a 20-year-old female with a history of cardiovascular stroke with no residual neurological deficit...
January 2018: Journal of Family Medicine and Primary Care
Jung-Hoon Lee, Hyun-Su Choi
BACKGROUND: Although cross tape has recently been used by clinicians for various musculoskeletal conditions, scientific studies on the direction of cross tape application are lacking. METHODS: The present study aimed to investigate whether the direction of cross tape application affected the outcomes of the modified O-ring test and maximal pinch strength using a pinch gauge and the conformity between these 2 tests when cross tape was applied to the forearm muscles of individuals with no upper extremity pain and no restriction of joint range of motion...
June 2018: Medicine (Baltimore)
Xiaoling Chen, Ping Xie, Yuanyuan Zhang, Yuling Chen, Fangmei Yang, Litai Zhang, Xiaoli Li
Recently, functional corticomuscular coupling (FCMC) between the cortex and the contralateral muscle has been used to evaluate motor function after stroke. As we know, the motor-control system is a closed-loop system that is regulated by complex self-regulating and interactive mechanisms which operate in multiple spatial and temporal scales. Multiscale analysis can represent the inherent complexity. However, previous studies in FCMC for stroke patients mainly focused on the coupling strength in single-time scale, without considering the changes of the inherently directional and multiscale properties in sensorimotor systems...
2018: Frontiers in Neurology
Lindley B Wall, Marybeth Ezaki, Charles A Goldfarb
Camptodactyly of the lesser digits is commonly seen in patients with arthrogryposis. The flexed posture of the digit can be functionally limiting and necessitate surgical treatment to improve grasp function. In digits with normal bony anatomy, a lateral stiletto-shaped transposition flap combined with flexor digitorum superficialis tendon release, can improve finger deformity and function.
September 2018: Journal of Hand Surgery
John M Felder, Susan E Mackinnon, Megan M Patterson
BACKGROUND: Ulnar nerve transposition (UNT) surgery is performed for the treatment of cubital tunnel syndrome. Improperly performed UNT can create iatrogenic pain and neuropathy. The aim of this study is to identify anatomical structures distal to the medial epicondyle that should be recognized by all surgeons performing UNT to prevent postoperative neuropathy. METHODS: Ten cadaveric specimens were dissected with attention to the ulnar nerve. Intramuscular UNT surgery was simulated in each...
April 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
Mitsuhiro Nito, Wataru Hashizume, Manabu Jimenji, Katsuhiko Suzuki, Toshiaki Sato, Hiromi Fujii, Takuji Miyasaka, Masaomi Shindo, Akira Naito
Effects of low-threshold afferents from the flexor digitorum superficialis (FDS) to the flexor carpi radialis (FCR), flexor carpi ulnaris (FCU) and extensor carpi ulnaris (ECU) motoneurons were examined using a post-stimulus time-histogram (PSTH) and electromyogram-averaging (EMG-A) methods in seven healthy human subjects. Electrical conditioning stimulation to the median nerve branch innervating FDS with the intensity immediately below the motor threshold was delivered. In the PSTH study, the stimulation produced a trough (inhibition) in 19/44 (43%) of FCR and 17/41 (41%) of FCU motor units...
July 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
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