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Scaphoid bone

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https://www.readbyqxmd.com/read/29143872/concomitant-hook-of-hamate-fractures-in-patients-with-scaphoid-fracture-more-common-than-you-might-think
#1
Ramin Mandegaran, Sam Gidwani, Ali Zavareh
OBJECTIVE: The scaphoid is the most commonly fractured carpal bone. The presence of a concomitant hook of hamate fracture is of particular relevance given that it is often occult on routine wrist/scaphoid radiographs and that hook of hamate fractures are prone to symptomatic non-union, resulting in chronic ulnar wrist pain. Prompt diagnosis and immobilisation/fixation may minimise such complications. Our study is aimed at assessing the frequency of concomitant hook of hamate fractures in patients with scaphoid fractures...
November 16, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/29132789/scaphoid-fracture-fixation-in-a-nonunion-model-a-biomechanical-study-comparing-3-types-of-fixation
#2
Avanthi Mandaleson, Stephen K Tham, Craig Lewis, David C Ackland, Eugene T Ek
PURPOSE: Union of a scaphoid fracture after fixation is influenced by various factors, one of which is fracture stability. This study aims to compare the biomechanical stability of 3 different types of scaphoid fracture fixation in a scaphoid nonunion model. METHODS: Thirty cadaveric scaphoid specimens were assigned to one of 3 different fixation groups: (1) single 3.0-mm compression screw, (2) two 2.2-mm screws, and (3) scaphoid plate. A 3-mm volar wedge osteotomy was created at the scaphoid waist to simulate a nonunion model...
November 11, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29122424/scaphoid-healing-necessary-for-unrestricted-activity-a-biomechanical-cadaver-model
#3
Michael S Guss, Joshua T Mitgang, Anthony Sapienza
PURPOSE: To determine if scaphoid fractures with bridging bone of 50% of their width treated with a centrally placed screw will restore biomechanical integrity equivalent to that of the intact scaphoid. METHODS: Twenty-four fresh cadaver scaphoids were used. Six were left intact to serve as the control group. Six were osteotomized 50% of their width and made up the osteotomy without screw group. Six were included in the 50% osteotomy plus compression screw group...
November 7, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29105591/treatment-of-the-scaphoid-humpback-deformity-is-correction-of-the-dorsal-intercalated-segment-instability-deformity-critical
#4
Christophe L Mathoulin, Margareta Arianni
Treatment of scaphoid fractures has been focused mainly on achieving union, with less attention to restoring normal scaphoid shape and orientation. Malalignment of one carpal bone will disrupt the kinetics of the entire wrist. The dorsal intercalated segment instability deformity associated with scaphoid waist nonunion is a nondissociative form of carpal instability. It has to be reduced in the treatment of scaphoid waist nonunions to avoid kinetic problems that will lead to arthritic changes. Computerized tomography scanning has become indispensable to visualize the humpback deformity clearly...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29105586/radial-styloidectomy-for-scaphoid-nonunion-advanced-collapse-relevance-of-nonunion-location
#5
Emil S Vutescu, Rishabh Jethanandani, Darryl B Sneag, Scott W Wolfe, Steve K Lee
Radial styloidectomy along with scaphoid nonunion reconstructive surgery is considered an acceptable surgical treatment for stage 1 scaphoid nonunion advanced collapse. The extent of radioscaphoid joint wear that defines scaphoid nonunion advanced collapse stage 1 is unclear. An appropriate radial styloidectomy is limited to 6 mm styloid removal to prevent carpal instability. The aim of this study was to determine whether nonunion fracture location can be a guiding factor in determining whether the scaphoid bone can be retained with scaphoid nonunion reconstructive surgery and radial styloidectomy...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29098903/scaphoid-instability-caused-by-a-giant-cell-tumour-of-the-tendon-sheath-a-case-report
#6
Yanjun Wang, Xiaoxiao Zhu, Genwang Pei, Xianshang Zeng, Deng Chen, Yonggang Zuo, Weiguang Yu, Zhe Ge, Xinchao Zhang
Giant-cell tumour of the tendon sheath (GCTTS) is a soft tissue tumour that may invade bone, causing an intrinsic osseous lesion or instability on radiographs. A case with scaphoid instability caused by a histologically-confirmed neighbouring GCTTS has rarely been described in the literature. No definite and radical method is available for the treatment of GCTTS. This report describes an unusual case of a 22-year-old woman who previously experienced a GCTTS in her right elbow, which was removed 10 years earlier...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/29078719/bone-grafting-for-scaphoid-nonunions-is-free-vascularized-bone-grafting-superior-for-scaphoid-nonunion
#7
William R Aibinder, Eric R Wagner, Allen T Bishop, Alexander Y Shin
BACKGROUND: Nonvascularized bone grafting (NVBG) and vascularized bone grafts (VBGs) have been used to treat scaphoid nonunions. A comparison of a single institution' s experience using structural iliac crest bone graft (ICBG), 1,2-intercompartmental supraretinacular artery (1,2-ICSRA), and medial femoral condyle (MFC) grafts to treat scaphoid nonunions was undertaken. METHODS: Thirty-one patients underwent ICBG, 33 patients underwent 1,2-ICSRA, and 45 patients underwent MFC grafting...
October 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29078712/management-modalities-and-outcomes-following-acute-scaphoid-fractures-in-children-a-quantitative-review-and-meta-analysis
#8
Ashkaun Shaterian, Pauline Joy F Santos, Christine J Lee, Gregory R D Evans, Amber Leis
BACKGROUND: Early evaluation and appropriate management of pediatric scaphoid fractures are necessary to avoid complications. To date, current management of pediatric fractures varies among providers. The objective of this study was to compare clinical outcomes following different treatment modalities. METHODS: A PubMed literature search identified studies involving acute scaphoid fractures in children. Studies were evaluated for treatment provided and their respective effects on union rate, wrist range of motion, and wrist pain...
October 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29033290/nonvascularized-cartilage-grafts-versus-vascularized-cartilage-flaps-comparison-of-cartilage-quality-6%C3%A2-months-after-transfer-and-isolated-from-surrounding%C3%A2-bone-ingrowth
#9
James P Higgins, Farzad Borumandi, Heinz K Bürger, Mehmet Emre Benlidayı, Anna Vasilyeva, Leman Sencar, Sait Polat, Alexander J Gaggl
PURPOSE: Subchondral perfusion of osteochondral grafts has been shown to be important in preventing long-term cartilage degeneration. In carpal reconstruction, subchondral perfusion from the graft bed is limited. This study's purpose was to compare the histological characteristics of cartilage in osteochondral grafts supported by synovial imbibition alone to cartilage of vascularized osteochondral flaps that have both synovial and vascular pedicle perfusion. METHODS: Two adjacent osteochondral segments were harvested on the medial femoral trochlea in domestic 6- to 8-month-old pigs...
October 12, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28991580/scaphoid-union-the-role-of-wrist-arthroscopy
#10
REVIEW
Jeff Ecker
There are times when clinical examinations, radiographs, and computed tomography scans do not provide sufficient information to know whether a scaphoid fracture or scaphoid bone graft has united, partially united, or not united. When this problem arises, arthroscopic examination of the scaphoid fracture or scaphoid bone graft provides additional information to solve the problem and plan further management in an evidence-based manner. The indications for the use of arthroscopy and surgical technique are described...
November 2017: Hand Clinics
https://www.readbyqxmd.com/read/28988679/cumulative-incidence-of-carpal-instability-12-24-months-after-fall-onto-outstretched-hand
#11
Lisa O'Brien, Luke Robinson, Eugene Lim, Hayley O'Sullivan, Helen Kavnoudias
STUDY DESIGN: Descriptive Epidemiological Study. INTRODUCTION: Ligament tears between carpal bones are easily missed on initial presentation, but can have potentially debilitating effects on the patient if they progress to an instability. They are usually the result of a fall onto an outstretched hand with the wrist in hyperextension. Current incidence of carpal instability after these falls is unknown. PURPOSE OF THE STUDY: Using established clinical and radiological measures, we sought to establish the cumulative incidence of carpal instability in people who have fallen onto an outstretched hand in the second year after injury...
October 5, 2017: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/28945157/success-of-scaphoid-nonunion-surgery-is-independent-of-proximal-pole-vascularity
#12
Schneider K Rancy, Morgan M Swanstrom, Edward F DiCarlo, Darryl B Sneag, Steve K Lee, Scott W Wolfe
We followed 35 consecutive patients with scaphoid nonunions in a prospective longitudinal registry. All nonunions were treated with curettage, non-vascularized autogenous grafting and headless screw fixation. Preoperative magnetic resonance imaging, intraoperative bleeding points and histopathological analysis of cancellous bone in the proximal pole were recorded as measures of viability. Healing was categorized as ≥50% bony bridging on computed tomographic images in the plane of the scaphoid. Nine of 23 proximal poles demonstrated ischaemia on magnetic resonance imaging but none were interpreted as infarcted...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28942683/a-comparison-of-plate-versus-screw-fixation-for-segmental-scaphoid-fractures-a-biomechanical-study
#13
Jill A Goodwin, Paulo Castañeda, Ryan P Shelhamer, Liam C Bosch, Scott G Edwards
BACKGROUND: Volar locking plate fixation may offer several advantages over headless screw fixation for scaphoid nonunion, or segmental or comminuted fractures: (1) increased surface area for bony healing; (2) preserved vascularity; and (3) maintenance of a gap for graft insertion. The purpose of this study is to compare headless screw and locking plate fixation of segmental scaphoid fractures and to determine whether either fixation provides a greater mechanical advantage in osteoporotic versus nonosteoporotic bone...
September 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28921041/stabilization-of-scaphoid-type-b2-fractures-with-one-or-two-headless-compression-screws
#14
S Quadlbauer, T Beer, Ch Pezzei, J Jurkowitsch, A Tichy, T Hausner, M Leixnering
INTRODUCTION: Fractures of the scaphoid account for the most commonly injured carpal bone. Minimally displaced fractures of the waist will heal in 85-90% when using a below elbow cast. However, fractures with displacement have a higher risk for nonunion. Therefore, open reduction and fixation with headless compression screws (HCS) have become the preferred method of treatment. The aim of this study was to compare the radiological and clinical outcome of unstable scaphoid B2 type fractures, stabilized using one or two headless compression screws...
September 18, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28906587/vascularized-thumb-metacarpal-periosteal-pedicled-flap-for-scaphoid-nonunion-an-anatomical-study-and-pediatric-case-report
#15
Sergi Barrera-Ochoa, Gerardo Mendez-Sanchez, Alfonso Rodriguez-Baeza, Jorge Knörr, Jayme Augusto Bertelli, Francisco Soldado
PURPOSE: Through an anatomical review, the primary aim of this study was to delineate the dorsal thumb metacarpal (TM) periosteal branches of the radial artery (RA). In addition, we report here the clinical utility of a vascularized TM periosteal pedicled flap (VTMPF), supplied by the first dorsal metacarpal artery (FDMA), in a complex case of scaphoid nonunion. METHODS: Ten latex-colored upper limbs from fresh human cadavers were used. Branches of the RA were dissected under 3x loupe magnification, noting the periosteal branches arising from the FDMA...
September 14, 2017: Microsurgery
https://www.readbyqxmd.com/read/28893145/non-vascularized-iliac-bone-grafting-for-scaphoid-nonunion-with-avascular-necrosis
#16
Jihyeung Kim, Jin Woo Park, Jeehyeok Chung, Kee Jeong Bae, Hyun Sik Gong, Goo Hyun Baek
We present the surgical outcomes of non-vascularized bone grafting taken from the iliac crest in 24 patients with scaphoid nonunion and avascular necrosis. The Fisk-Fernandez technique was used in 11 patients, and cancellous bone grafting was used in 13 patients. Bony union was achieved in 22 of the 24 patients. Non-vascularized iliac bone grafting can be used for the surgical management of scaphoid nonunion with avascular necrosis. Although revascularization of the proximal fragment after surgery was not evaluated, bony union was confirmed in nearly all patients...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28888525/clinical-and-radiological-outcomes-following-radioscapholunate-fusion
#17
D Montoya-Faivre, G Pomares, V Calafat, F Dap, G Dautel
INTRODUCTION: Radioscapholunate (RSL) fusion is typically performed following wrist trauma. It addresses the pain caused by radiocarpal osteoarthritis but reduces the wrist's mobility. The objective of this study was to determine the long-term clinical and radiological outcomes of this procedure. MATERIALS AND METHODS: This was a retrospective study of all wrists operated for RSL fusion in our surgery unit over a 12-year period. The clinical analysis consisted of joint amplitudes, grip strength, pain (VAS) and functional scores (PRWE, QuickDash, Mayo Wrist Score)...
September 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28832204/wrong-bone-excision-in-hand-surgery
#18
Nicholas M Caggiano, David L Nelson, Saul J Kaplan, Kristofer S Matullo
BACKGROUND: The incidence of wrong-bone excision in hand surgery is not known. The wrist offers a unique challenge in that a single surgical incision yields access to multiple potential surgical sites, thus rendering site marking less effective. Mistaken identification of structures in the wrist is a real and potentially troublesome phenomenon. This study is designed to evaluate the occurrence of wrong-bone excision and to identify any risk factors and preventative measures that may help to prevent this complication in the future...
September 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28832203/the-fourth-extensor-compartment-artery-vascularized-bone-graft-of-the-distal-radius-for-cmc-fusion-in-the-treatment-of-carpal-boss-a-case-report
#19
Jorge G Boretto, David Fernandez-Fernandez, Gerardo Gallucci, Pablo De Carli
BACKGROUND: Carpometacarpal joints can be affected by traumatic or degenerative pathology. Although different techniques have been described to treat these conditions, most authors agree that arthrodesis is an effective treatment modality. Vascularized bone grafts of the distal radius have been used to treat carpal conditions, such as scaphoid nonunion or Kiënbock disease, and they have been shown to have several advantages over nonvascularized bone grafts. METHODS: We report a case of a carpal boss in a female patient treated with an arthrodesis of the second and third carpometacarpal joints by using the fourth extensor compartment artery vascularized bone graft...
September 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28791454/-midcarpal-partial-arthrodesis-with-locking-plate-osteosynthesis
#20
REVIEW
J-F Hernekamp, U Kneser, T Kremer, B Bickert
OBJECTIVE: Preservation of residual mobility and pain reduction in the wrist in advanced carpal collapse (scapholunate advanced collapse, SLAC or scaphoid nonunion advanced collapse, SNAC). INDICATIONS: Advanced osteoarthritis of the radiocarpal and intercarpal articulations, SLAC/SNAC stages 2-3. CONTRAINDICATIONS: Arthrotic alterations to the proximal joint surface of the lunate bone or the corresponding joint surface of the radius (lunate fossa)...
August 8, 2017: Operative Orthopädie und Traumatologie
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