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Finger flexor tendon

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https://www.readbyqxmd.com/read/29137727/the-quantitative-evaluation-of-the-relationship-between-the-forces-applied-to-the-palm-and-carpal-tunnel-pressure
#1
Kazutoshi Kubo, Yu-Shiuan Cheng, Boran Zhou, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy occurring in upper limbs. The etiology, however, has not been fully understood yet. Median nerve could be compressed by either increase of carpal tunnel pressure (CTP) or direct impingement when it is forced toward to carpal ligament especially in wrist flexion leading to CTS development. Thus, the increase of carpal tunnel pressure is considered an important role in CTS development. It has been identified that forces applied to the palm would affect the CTP...
November 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29132787/distal-biceps-brachii-tendon-transfer-for-re-establishing-extrinsic-finger-function-feasibility-study-in-cadavers
#2
Matthew D Welsch, Alexander D Mih, Brock D Reiter, Gregory A Merrell
PURPOSE: To determine the anatomic feasibility of transferring the biceps brachii tendon into either the extensor digitorum communis (EDC) or flexor digitorum profundus (FDP), determine the excursion imparted to EDC and FDP tendons after transfer, and compare the work capacity of the cadaver biceps to previously published data on the biceps as well as the recipient muscles by calculating the physiologic cross-sectional area (PCSA). METHODS: Four fresh-frozen cadaver shoulder-elbow-wrist specimens were used to measure tendon excursion that can be obtained with transfer of the distal biceps tendon into either the EDC or FDP...
November 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29125382/intra-sheath-versus-extra-sheath-ultrasound-guided-corticosteroid-injection-for-trigger-finger-a-triple-blinded-randomized-clinical-trial
#3
Mohsen Mardani-Kivi, Mahmoud Karimi-Mobarakeh, Ali Babaei Jandaghi, Sohrab Keyhani, Khashayar Saheb-Ekhtiari, Keyvan Hashemi-Motlagh
OBJECTIVE: The aim of this study is to compare clinical results of ultrasound-guided corticosteroid injection, intra-sheath versus extra-sheath of the finger flexor tendon. METHODS: A total of 166 patients with trigger finger were evaluated in a triple blind randomized clinical trial study. All the patients were injected with 1ml of 40mg/ml methyl prednisolone acetate, under the guidance of ultrasound. Half the patients were injected extra sheath, while the other half were injected intra sheath at the level of first annular pulley...
November 10, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29117832/prevalence-of-absence-of-palmaris-longus-and-its-association-with-gender-hand-dominance-and-absence-of-fds-tendon-to-little-finger-among-malay-population
#4
Mei Wen Yong, Nabihah Yusof, Lekhraj Rampal, Manohar Arumugam
BACKGROUND: Palmaris Longus is being widely used in reconstructive, plastic and cosmetic surgeries due to its long tendon. It is the most readily available source for tendon grafting. The objective of this study was to determine the prevalence of absence of Palmaris Longus and its association with gender, hand dominance and absence of FDS (flexor digitorum superficialis) tendon to little finger among Malay population. METHODS: An analytical cross sectional study design was used and a self-administered proforma was distributed for data collection...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29117820/carpal-tunnel-syndrome-and-trigger-wrist-caused-by-localized-amyloidosis-a-case-report
#5
Takuma Wakasugi, Ritsuro Shirasaka, Toshiyuki Kawauchi, Koji Fujita, Atsushi Okawa
We report a case of carpal tunnel syndrome and trigger wrist caused by localized amyloidosis. A 37-year-old man, who worked as a manufacturer, presented with a 5-month history of tingling sensation in the three radial fingers of the left hand and a painful click at the volar aspect of the wrist during digital motion. We divided the transverse carpal ligament and detected diffuse tenosynovitis that was especially severe around the flexor digitorum profundus tendons. Histological findings led to a diagnosis of amyloidosis...
December 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/29110050/frequency-of-inflammatory-like-mr-imaging-findings-in-asymptomatic-fingers-of-healthy-volunteers
#6
Christoph A Agten, Andrea B Rosskopf, Maciej Jonczy, Florian Brunner, Christian W A Pfirrmann, Florian M Buck
OBJECTIVE: To describe the frequency of inflammatory-like findings on MR imaging in asymptomatic volunteers and compare them with patients with known rheumatoid arthritis and psoriatic arthritis. MATERIALS AND METHODS: MR images of fingers in 42 asymptomatic volunteers and 33 patients with rheumatoid/psoriatic arthritis were analyzed. The Outcome Measures in Rheumatology Clinical Trials (OMERACT) Rheumatoid/Psoriatic Arthritis MRI Scoring System (RAMRIS/PsAMRIS) and tenosynovitis scoring system were used to assess: bone marrow edema (BME), erosions, tendon sheath fluid/tenosynovitis, joint effusion, and soft-tissue edema...
November 6, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29105590/swan-neck-deformity-due-to-chronic-radial-collateral-ligament-injury-of-the-little-finger-proximal-interphalangeal-joint
#7
Yoshitaka Hamada, Hiroaki Takai, Ryousuke Satoh, Naohito Hibino, Yukiko Ueda, Yoshitaka Minamikawa
We present seven cases of a relatively rare swan neck deformity resulting from chronic radial collateral ligament (RCL) injury of the proximal interphalangeal (PIP) joint in the little finger. All patients were middle-aged women (mean 51 years old, range 42-55), and the duration between the initial injury and surgery was 20 years (range 5-40). The chief complaint was painful snapping of the PIP joint. All patients had hyperextension and ulnar deviation of the PIP joint with mobile swan neck deformities that had not improved with conservative treatment...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29065767/results-of-heterodigital-flexor-digitorum-profundus-hemi-tendon-transfer-for-23-flexor-tendon-injuries-in-zones-1-or-2
#8
Aude Bommier, Duncan McGuire, Patrick Boyer, Asan Rafee, Sami Razali, Christophe Oberlin
We report outcomes of reconstruction of zone 1 or 2 flexor tendon injuries using a heterodigital hemi-tendon transfer of the flexor digitorum profundus in 23 fingers of 23 patients. At mean follow-up of 57 months, the mean total active motion of the three finger joints including the metacarpophalangeal joint was 128 degrees preoperatively and 229 degrees at final follow up. According to Strickland criteria, the function was excellent for 14 fingers, good for seven fingers and poor for two fingers. The subgroup analysis showed that the results were better in cases of primary surgery, children, and for the index and little fingers...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29059706/pacinian-corpuscles-in-the-human-fetal-finger-and-thumb-a-study-using-3d-reconstruction-and-immunohistochemistry
#9
Ji Hyun Kim, Channy Park, Xiaopeng Yang, Gen Murakami, Hiroshi Abe, Shunichi Shibata
The detailed distribution of Pacinian corpuscles was evaluated by viewing the transverse sections of all fingers and thumbs, including the interdigital areas, from eight hands of five fetuses of gestational age 28-33 weeks (crown-rump length 230-290 mm). Among the 40 fingers and thumbs, serial sections were prepared for 3D reconstructions of nerve elements in the distal and middle phalangeal segments of three fifth fingers; in these three fingers, the distal segment contained 45-75 Pacinian corpuscles. These Pacinian corpuscles were 0...
October 23, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29045229/case-247-jersey-finger-of-the-fifth-finger
#10
Viviane Marie Créteur, Pierre François Durieux, Nicolas Cuylits
History A 34-year-old man without underlying medical conditions came to the emergency department for evaluation of persistent pain over the volar portion of his right fifth finger after a fall during a football match 3 days before. At physical examination, the injured finger was swollen and purple. Passive and active flexion of the proximal and distal interphalangeal joints were compromised, without interphalangeal instability. Radiography was performed in the emergency department, and the patient was released with a diagnosis of a fifth digit sprain...
November 2017: Radiology
https://www.readbyqxmd.com/read/29042331/the-first-experience-of-triple-nerve-transfer-in-proximal-radial-nerve-palsy
#11
Mohammadreza Emamhadi, Sasan Andalib
BACKGROUND: Injury to distal of posterior cord of brachial plexus leads to palsy of the radial and axillary nerves. The symptoms are usually motor deficits of the deltoid muscle, triceps brachii muscle, and the extensor muscles of the wrist, thumb and fingers. Tendon transfers, nerve grafts, and nerve transfers are options of surgical treatment of proximal radial nerve palsy to restore some motor functions. Tendon transfer is painful, requires a long immobilization, and decreases donor muscle strength; nevertheless, nerve transfer produces promising outcome...
October 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29020826/redefining-zone-ii-anatomy-of-the-flexor-digitorum-superficialis-insertion
#12
Luke T Nicholson, Jeffrey R Hill, Braden McKnight, Nathanael Heckmann, Milan Stevanovic, Alidad Ghiassi
BACKGROUND: Flexor zone II is defined as the region spanning the proximal aspect of the A1 pulley to the insertion of the flexor digitorum superficialis (FDS) tendon. Descriptions of the FDS insertion are inconsistent in the literature, but zones of injury are frequently determined with reference to superficial landmarks. The purpose of this study was to describe the footprint of the FDS insertion and define its relationship to the proximal interphalangeal (PIP) skin crease. METHODS: The FDS insertion on the index, middle, ring, and small fingers was dissected in 6 matched pairs of fresh-frozen cadaveric hands...
October 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28994884/trauma-of-the-hand-from-circular-saw-table-a-series-of-a-130-cases
#13
Yafa Hadj Hassine, Mohamed Hmid, Walid Baya
INTRODUCTION: Trauma of the hand from a circular saw table is a common occurrence in developing countries it tends to occur in young hand working people and it causes a serious lesions. METHODS: It was a retrospective series about a 130 cases of hand trauma from circular saw table. Epidemiological features, treatment, and permanent disabilities left by hand trauma from circular saw table were studied to identify ways to prevent such an accident. RESULTS: The average age was 31...
December 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/28993165/motor-sparing-continuous-median-nerve-block-for-hand-surgery-a%C3%A2-pediatric-case
#14
Takeshi Murouchi
Here is described a successful perioperative pain control with continuous median nerve block after flexor tendon repair surgery on 2nd finger of a child. A 9-year-old patient was admitted for reconstruction surgery. The combination of median nerve block and lateral/medial antecubital cutaneous nerve blocks were performed before the surgery to cover all the surgical incision including the 2nd finger, palm, the graft site proximal to the wrist, and Kleinert traction at the nail bed. At the end of the surgery, the infusion catheter was inserted at the distal one-third to spare the muscle strength of flexor digitorum muscles...
September 22, 2017: Asian J Anesthesiol
https://www.readbyqxmd.com/read/28985979/feasibility-of-a-new-pulley-repair-a%C3%A2-cadaver-study
#15
Isabelle Schöffl, Julia Meisel, Christoph Lutter, Volker Schöffl
PURPOSE: In this study, the feasibility of a new pulley reconstruction in which the tendon graft is pulled through a tunnel in the proximal phalanx, was evaluated using a cadaver model, with particular attention paid to the weakening of the bone structure by the drill hole. METHODS: Nine fingers from 6 cadaver hands with intact pulley systems were compared with 9 fingers from 6 cadaver hands with missing A2 to A4 pulleys but that included a repair using the new surgical technique...
October 4, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28975818/relative-motion-flexion-splinting-for-flexor-tendon-lacerations-proof-of-concept
#16
Bryan Chung, David T W Chiu, Vishal Thanik
BACKGROUND: The principle of relative motion has allowed patients to regain a higher degree of hand function, while protecting extensor tendon repairs. The purpose of this study was to determine whether the principle of relative motion could be a viable method to protect a flexor tendon repair. METHODS: Four fresh-frozen cadaver arms were each mounted on a testing apparatus (wrist in 30° of extension, metacarpophalangeal [MCP] joints blocked to 70°-80°). A minimum of 11 N was used to cyclically load the flexor digitorum profundus and extensor digitorum communis tendons to maximum allowable flexion and extension for 25 cycles...
October 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28972426/an-investigation-of-a-novel-tendon-transfer-surgery-for-high-median-ulnar-nerve-palsy-in-a-chicken-model
#17
Geoffrey R Browning, Anthony H Le, Jennifer J Warnock, Ravi Balasubramanian
PURPOSE: The state-of-the-art tendon transfer surgery for high median-ulnar nerve palsy involves directly suturing four finger flexor tendons to one wrist extensor muscle. This couples finger flexion limiting the patient's ability to grasp objects. Therefore, we propose a new approach to attach a novel passive implant to the extensor digitorum longus tendon in order to create a differential mechanism in situ. The implant is expected to enable the fingers to adapt to an object's shape during grasping...
October 3, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28971327/importance-of-consistent-datasets-in-musculoskeletal-modelling-a-study-of-the-hand-and-wrist
#18
Benjamin Goislard De Monsabert, Dafydd Edwards, Darshan Shah, Angela Kedgley
Hand musculoskeletal models provide a valuable insight into the loads withstood by the upper limb; however, their development remains challenging because there are few datasets describing both the musculoskeletal geometry and muscle morphology from the elbow to the finger tips. Clinical imaging, optical motion capture and microscopy were used to create a dataset from a single specimen. Subsequently, a musculoskeletal model of the wrist was developed based on these data to estimate muscle tensions and to demonstrate the potential of the provided parameters...
October 2, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28960382/ultrasonographic-evaluation-of-zone-ii-partial-flexor-tendon-lacerations-of-the-fingers-a-cadaveric-study
#19
Nikolas H Kazmers, Joshua A Gordon, Kristen L Buterbaugh, David J Bozentka, David R Steinberg, Viviane Khoury
OBJECTIVES: Accurate assessment of zone II partial flexor tendon lacerations in the finger is clinically important. Surgical repair is recommended for lacerations of greater than 50% to 60%. Our goal was to evaluate ultrasonographic test characteristics and accuracy in identifying partial flexor tendon lacerations in a cadaveric model. METHODS: From fresh-frozen above-elbow human cadaveric specimens, 32 flexor digitorum profundus tendons were randomly selected to remain intact or receive low- or high-grade lacerations involving 10% to 40% and 60% to 90% of the radioulnar width within Verdan Zone II, respectively...
September 29, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28920544/identification-of-the-location-of-the-a1-pulley-combining-palpation-technique-with-palm-landmarks-and-percutaneous-release-of-a1-pulley-with-a-19-gauge-needle-a-cadaveric-study
#20
Aleksandr Grinčuk, Karolis Baužys, Narūnas Porvaneckas, Valentinas Uvarovas, Gediminas Rauba, Sigitas Ryliškis
The aims of this study were to identify the location of the A1 pulley combining palpation technique with superficial palm landmarks and to determine the efficacy and safety of A1 pulley percutaneous release with a 19-gauge needle. Fourteen fresh frozen cadaveric specimens were used: 56 fingers and 14 thumbs. The location of the A1 pulley was based on anatomical landmarks and was identified in all digits. Complete release of the A1 pulley occurred in 60 of the 70 digits (85.7%). The length of the A1 pulley in thumbs was 5...
September 2017: Journal of Orthopaedic Surgery
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