Correction of Dorsi-Flexed Intercalated Segment Instability after Restoration of Scaphoid Height in a Cadaver Model of Scaphoid Non-Union

1995 ◽  
Vol 20 (5) ◽  
pp. 596-602 ◽  
Author(s):  
M. YASUDA ◽  
M. KUSUNOKI ◽  
K. KAZUKI ◽  
Y. YAMANO
Keyword(s):  
Mechanical Loading ◽  
Bone Defect ◽  
Carpal Instability ◽  
Rigid Fixation ◽  
Anatomical Reduction ◽  
Non Union ◽  
Herbert Screw ◽  
Palmar Approach ◽  
Wrist Joints

Models of scaphoid non-union with static dorsi-flexed intercalated segment instability were produced in five frozen arms from cadavers or subjects following accidents by repetitive mechanical loading of the wrist joints longitudinally after a bone defect has been made at the mid-portion of the scaphoid. We designed four models of reduction: anatomical reduction; reduction with a shortened scaphoid; anatomical reduction but with the radio-lunate ligament sectioned, and a shortened scaphoid with the radio-lunate ligament sectioned. Results suggested that anatomical reduction with rigid fixation with a Herbert screw was most effective for correction of malalignment with DISI. Preservation of the radio-lunate ligament during the palmar approach to the scaphoid seemed to be important to prevent ligamentous carpal instability.

scholarly journals Application of subject-specific adaptive mechanical loading for bone healing in a mouse tail vertebral defect

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Angad Malhotra ◽  
Matthias Walle ◽  
Graeme R. Paul ◽  
Gisela A. Kuhn ◽  
Ralph Müller
Keyword(s):  
Mechanical Loading ◽  
Bone Defect ◽  
Bone Healing ◽  
Three Dimensional ◽  
Patient Specific ◽  
Dependent Manner ◽  
Micro Computed Tomography ◽  
Computed Tomography Images ◽  
Bone Defect Healing ◽  
Subject Specific

AbstractMethods to repair bone defects arising from trauma, resection, or disease, continue to be sought after. Cyclic mechanical loading is well established to influence bone (re)modelling activity, in which bone formation and resorption are correlated to micro-scale strain. Based on this, the application of mechanical stimulation across a bone defect could improve healing. However, if ignoring the mechanical integrity of defected bone, loading regimes have a high potential to either cause damage or be ineffective. This study explores real-time finite element (rtFE) methods that use three-dimensional structural analyses from micro-computed tomography images to estimate effective peak cyclic loads in a subject-specific and time-dependent manner. It demonstrates the concept in a cyclically loaded mouse caudal vertebral bone defect model. Using rtFE analysis combined with adaptive mechanical loading, mouse bone healing was significantly improved over non-loaded controls, with no incidence of vertebral fractures. Such rtFE-driven adaptive loading regimes demonstrated here could be relevant to clinical bone defect healing scenarios, where mechanical loading can become patient-specific and more efficacious. This is achieved by accounting for initial bone defect conditions and spatio-temporal healing, both being factors that are always unique to the patient.

Vascularized Second Metacarpal-Base Bone Graft in Scaphoid Non-Union by the Palmar Approach

2003 ◽  
Vol 19 (2) ◽  
pp. 099-106 ◽  
Author(s):  
Takuya Sawaizumi ◽  
Mitsuhiko Nanno ◽  
Hiromoto Ito
Keyword(s):  
Bone Graft ◽  
Non Union ◽  
Palmar Approach

Treatment of Scaphoid Non-Union by Autogenous Iliac Graft with Herbert Screw Fixation

1994 ◽  
Vol 29 (3) ◽  
pp. 896
Author(s):  
Han Yong Lee ◽  
Yong Koo Kang ◽  
In Seol Chung ◽  
Seung Key Kim ◽  
Seung Beom Kang
Keyword(s):  
Screw Fixation ◽  
Non Union ◽  
Herbert Screw

Non-Union of the Scaphoid: Russe Graft vs Herbert Screw

1988 ◽  
Vol 13 (1) ◽  
pp. 83-86
Author(s):  
C. D. WARREN-SMITH ◽  
N. J. BARTON
Keyword(s):  
Bone Graft ◽  
Success Rate ◽  
Screw Fixation ◽  
Range Of Movement ◽  
Non Union ◽  
Herbert Screw ◽  
Results Of Treatment ◽  
And Function

The results of treatment in 50 consecutive patients with established non-union of the scaphoid are presented. All patients were treated under the care of a single consultant, for the same indications. Russe bone graft is compared with wedge bone graft plus Herbert screw fixation, in terms of union and function. Overall, a higher success rate was obtained by wedge graft plus Herbert screw, and a significantly better range of movement. However, Russe bone graft appears equally satisfactory for fibrous non-union.

scholarly journals Hook Plate Technique for Bony Mallet Thumb

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Fumihiro Mukasa ◽  
Yoshimasa Tomita ◽  
Hideyuki Hirasawa ◽  
Kazuo Kaneko
Keyword(s):  
Return To Work ◽  
Open Reduction ◽  
Sport Injury ◽  
Evaluation Criteria ◽  
Hook Plate ◽  
Rigid Fixation ◽  
Anatomical Reduction ◽  
Successful Result ◽  
Plate Technique ◽  
Early Return

Bony mallet is a common sport injury, but bony mallet thumb is rarely encountered. We performed open reduction and fixation of bony mallet thumb using a hook plate procedure on a 27-year-old man under general anesthesia. The patient began working one day after surgery. Six months postoperatively, the patient had excellent dexterity according to Crawford’s evaluation criteria and no difficulties at work or playing softball. Tension band fixation, compression pins, and the extension block technique are commonly used to manage bony mallet. Despite the anatomical reduction, rigid fixation, and early resumption of motion skills offered by the hook plate technique, to our knowledge, no previous reports of its application to bony mallet thumb were found. In this case, the hook plate technique was chosen and made an early return to work possible and brought about a successful result.

Non-Union of the Scaphoid: Russe Graft vs Herbert Screw

1993 ◽  
Vol 18 (3) ◽  
pp. 408-409
Author(s):  
C. D. Warren-Smith ◽  
N. J. Barton
Keyword(s):  
Bone Graft ◽  
Success Rate ◽  
Screw Fixation ◽  
Range Of Movement ◽  
Non Union ◽  
Herbert Screw ◽  
Results Of Treatment ◽  
And Function

The results of treatment in 50 consecutive patients with established non-union of the scaphoid are presented. All patients were treated under the care of a single consultant, for the same indications. Russe bone graft is compared with wedge bone graft plus Herbert screw fixation, in terms of union and function. Overall, a higher success rate was obtained by wedge graft plus Herbert screw, and a significantly better range of movement. However, Russe bone graft appears equally satisfactory for fibrous non-union.

Scaphoid Non-Union: Factors Affecting the Functional Outcome of Open Reduction and Wedge Grafting with Herbert Screw Fixation

1993 ◽  
Vol 18 (2) ◽  
pp. 219-224 ◽  
Author(s):  
R. NAKAMURA ◽  
E. HORII ◽  
K. WATANABE ◽  
K. TSUNODA ◽  
T. MIURA
Keyword(s):  
Surgical Treatment ◽  
Functional Outcome ◽  
Open Reduction ◽  
Screw Fixation ◽  
Functional Results ◽  
Bony Union ◽  
Proximal Fragment ◽  
Factors Affecting ◽  
Non Union ◽  
Herbert Screw

50 patients with scaphoid non-union were treated by open reduction, anterior wedge bone grafting and internal fixation using the Herbert screw. Intra-operative image intensiner control enabled us to insert the screw into the scaphoid accurately. An excellent or good functional outcome was less likely when more than 5 years had elapsed since injury, the non-union was in the proximal third, when sclerosis of the proximal fragment was present, and when reduction of carpal and scaphoid deformity was unsatisfactory. These four factors are believed to be the primary determinants affecting the functional results of the surgical treatment of scaphoid non-union, even when bony union is achieved.

Sign in / Sign up

Export Citation Format

Share Document