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Journal of Orthopaedic Surgery (Hong... 2022In medial open-wedge high tibial osteotomy (HTO) hinge axis and osteotomy plane influence the resulting anatomy, but accurate angular quantifications using...
In medial open-wedge high tibial osteotomy (HTO) hinge axis and osteotomy plane influence the resulting anatomy, but accurate angular quantifications using 3D-planning-simulations are lacking. The objectives of this study were developing a standardized and validated 3D-planning method of an HTO and to perform several simulated realignments to explain unintended anatomy changes. The cutting direction of the main osteotomy was defined parallel to the medial tibial slope and the hinge axis 1.5 cm distal to the lateral plateau. For interobserver testing, this 3D planning was performed on 13 digital models of human tibiae by two observers. In addition, four different hinge axis positions and five differently inclined osteotomy planes each were simulated. The osteotomy direction ranged from medial 0°-30° anteromedial, while the tilt of the osteotomy plane compared to the tibial plateau was -10° to +10°. All anatomic angular changes were calculated using 3D analysis. Multiple HTO plannings by two medical investigators using standardized procedures showed only minimal differences. In the 3D-simulation, each 10° rotation of the hinge axis resulted in a 1.7° significant increase in slope. Tilting the osteotomy plane by 10° resulted in significant torsional changes of 2°, in addition to minor but significant changes in the medial proximal tibial angle (MPTA). Standardized 3D-planning of the HTO can be performed with high reliability using two-observer planning. 3D-simulations suggest that control of the osteotomy plane is highly relevant to avoid unintended changes in the resulting anatomy, but this can be a helpful tool to modify specific angles in different pathologies in the HTO.
Topics: Humans; Knee Joint; Osteoarthritis, Knee; Osteotomy; Prostheses and Implants; Reproducibility of Results; Rotation; Tibia
PubMed: 35694778
DOI: 10.1177/10225536221101699 -
Journal of Orthopaedics and... Nov 2023The development of the Bernese periacetabular osteotomy (PAO) is based on a structured approach starting with an analysis of the preexisting procedures to improve the... (Review)
Review
The development of the Bernese periacetabular osteotomy (PAO) is based on a structured approach starting with an analysis of the preexisting procedures to improve the coverage of the femoral head and was followed by a list of additional goals and improvements. Cadaveric dissections with a detailed description of the vascular supply of acetabulum and periacetabular bone set the stage for an intrapelvic approach, which offered the largest acetabular correction possible combined with safe intracapsular access. The final composition of osteotomies required the development of several instruments and cutting devices before the feasibility could be tested on a series of cadaveric hips.While the sequence of the osteotomies remained largely unchanged over time (except for the pubic and ischial osteotomies), several propositions for an easier/less invasive approach have been discussed; some made it into standard practice. Efforts were undertaken to optimize the learning curve and minimize failures using video-clips, hands-on courses, fellowships, publications, and ongoing mentoring programs. In retrospect, with almost 40 years of experience, such efforts have promoted a worldwide adoption of the Bernese periacetabular osteotomy.
Topics: Humans; Acetabulum; Hip Joint; Hip Dislocation, Congenital; Osteotomy; Cadaver; Retrospective Studies; Treatment Outcome
PubMed: 37917385
DOI: 10.1186/s10195-023-00734-2 -
International Orthopaedics Jun 2024Spinal osteotomies are often essential in the treatment of congenital scoliosis. Risk factors for bleeding in these patients needing extracavitatory approaches,...
PURPOSE
Spinal osteotomies are often essential in the treatment of congenital scoliosis. Risk factors for bleeding in these patients needing extracavitatory approaches, especially hidden blood loss, are sparsely investigated. We aimed to investigate the bleeding characteristics and hidden blood loss in paediatric patients undergoing spinal osteotomies for congenital scoliosis.
METHODS
A retrospective analysis identified all patients with congenital scoliosis were retrospectively identified from the prospectively collected spine register from 2010 to 2022. Operative technique, perioperative laboratory results and imaging studies were extracted. The primary outcome was total blood loss including intraoperative, drain output and hidden blood loss.
RESULTS
Fifty-seven children (32 boys) with a mean age of 8.3 years underwent spinal osteotomy for congenital scoliosis. Posterolateral hemivertebrectomy was sufficient in 34 (59%) patients, while vertebral column resection (VCR) was required in 23 patients. Total bleeding averaged 792 (523) ml accounting for 42% of the estimated blood volume. Hidden blood loss accounted for 40% of total bleeding and 21% of estimated blood volume with a mean of 317 (256) ml. VCR was associated with greater intraoperative and total bleeding than hemivertebrectomies (p = 0.001 and 0.007, respectively). After adjusting for patient weight and fusion levels, hidden blood loss was larger in hemivertebrectomies (4.18 vs. 1.77 ml/kg/fused level, p = 0.049). In multivariable analysis, intraoperative blood loss was inversely correlated with preoperative erythrocyte levels. Younger age was associated with significantly greater drain, hidden and total blood loss.
CONCLUSION
Hidden blood loss constitutes a significant portion (40%) of total bleeding in congenital scoliosis surgery. Younger age is a risk factor for bleeding and the hidden blood loss should be taken into consideration in their perioperative management.
Topics: Humans; Scoliosis; Male; Female; Child; Blood Loss, Surgical; Osteotomy; Retrospective Studies; Child, Preschool; Risk Factors; Adolescent; Spine; Spinal Fusion
PubMed: 38228759
DOI: 10.1007/s00264-024-06090-y -
Joint Diseases and Related Surgery May 2023In this review, we discuss the efficacy and safety of biodegradable magnesium screws compared to titanium screws in the treatment of hallux valgus (HV) in patients... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVES
In this review, we discuss the efficacy and safety of biodegradable magnesium screws compared to titanium screws in the treatment of hallux valgus (HV) in patients undergoing distal metatarsal osteotomy (DMO).
MATERIALS AND METHODS
Eligible scientific articles published prior to October 2022 were retrieved from the PubMed, Springer, ScienceDirect, and Cochrane Library databases. The terms used for searching included "hallux valgus", "distal metatarsal osteotomies", and "bioabsorbable magnesium screw" which were limited in the title or abstract through the text. The title and abstract were checked one by one to exclude the non-related studies. For primary identified studies and relevant systematic reviews, the full texts were accessed and browsed to finally include the eligible studies. No restriction was set on publication language and publication status.
RESULTS
Two randomized-controlled trials (RCTs) and three non-RCTs that met the inclusion criteria were included. There was no significant difference in the American Orthopaedic Foot and Ankle Society (AOFAS) score, postoperative HV angle (HVA), intermetatarsal angle (IMA), Visual Analog Scale (VAS) score, soft tissue irritation, implant fracture, reoperation, and infection rates between two groups.
CONCLUSION
Bioabsorbable magnesium compression screws show comparable clinical or radiological results to titanium compression screws in the treatment of HV in patients undergoing DMO.
Topics: Humans; Titanium; Magnesium; Treatment Outcome; Metatarsal Bones; Absorbable Implants; Hallux; Hallux Valgus; Osteotomy; Bone Screws
PubMed: 37462631
DOI: 10.52312/jdrs.2023.1026 -
Prilozi (Makedonska Akademija Na... Mar 2024Gonarthrosis is arthrosis of the knee joint, a chronic non-inflammatory disease manifested by progressive destruction of the intra-articular cartilage, accompanied by...
INTRODUCTION
Gonarthrosis is arthrosis of the knee joint, a chronic non-inflammatory disease manifested by progressive destruction of the intra-articular cartilage, accompanied by abnormal formation of the bones form the joint, changes in the synovial membrane and synovial fluid. Gonarthrosis is the most common type of arthrosis. Gonarthrosis can be treated conservatively and operatively. Among well-established surgical options for the treatment of medial gonarthrosis are high tibial osteotomy (HTO), unicompart-mental knee arthroplasty (UKA), and total knee arthroplasty (TKA). Proximal fibular osteotomy (PFO) or superior partial fibulectomy is a relatively recent procedure proposed to reduce knee pain in patients with medial compartment.
AIM
Our study aims to demonstrate an alternative treatment for gonarthrosis with proximal fibular osteotomy and reduced knee pain in patients with medial compartment osteoarthritis of the knee.
MATERIALS AND METHODS
At the Department of Orthopedics and Traumatology at J.Z.U "Borka Taleski" Prilep in the period from 2018 to 2021, 14 cases were treated, of which 11 were female and 3 were male. All patients were aged between 62 and 82 years with a mean age of 71.3 years. Patients had a severe degree of gonarthrosis (III/IV) according to Kellgren-Lawrence classification. Arthroscopy was performed in 2 patients. The fibula osteotomy was 7 cm away from the fibular head, with 1 cm resected bone fragment from the fibula.
RESULTS
The average duration of the surgery was 30 minutes. Patients were followed up on the 7th day, first month, 3 months and 6 months after surgery. The final evaluation of function was done after 6 months by examining the active and passive movements of the knee joint. In all 14 patients we have excellent results with pain reduction, improvement of movement and quality of life.
CONCLUSION
Proximal fibular osteotomy is an option for medial compartment osteoarthritis of the knee. Current literature is limited to small case series which report good outcomes in pain reduction, including the correction of varus deformity in medial gonarthrosis. Further studies are needed to determine the place of the PFO in the medial gonarthrosis management algorithm before it can be recommended for routine clinical use.
Topics: Humans; Male; Female; Middle Aged; Aged; Aged, 80 and over; Osteoarthritis, Knee; Fibula; Quality of Life; Pain; Osteotomy; Treatment Outcome
PubMed: 38575383
DOI: 10.2478/prilozi-2024-0002 -
Annals of the Royal College of Surgeons... Jan 2022Akin osteotomies are commonly fixed with a screw or staple. Hardware-related symptoms are not uncommon. We compared the outcomes and costs of the two implants. (Comparative Study)
Comparative Study
INTRODUCTION
Akin osteotomies are commonly fixed with a screw or staple. Hardware-related symptoms are not uncommon. We compared the outcomes and costs of the two implants.
METHODS
We evaluated 74 Akin osteotomies performed in conjunction with first metatarsal osteotomy for hallux valgus. The osteotomy was fixed with a headless compression screw in 39 cases and a staple in 35 cases. We looked at the implant-related complications, removal of metalwork, revision, non-union and cost. Pre- and postoperative hallux valgus interphalangeal (HI) angles and length of the proximal phalanx were measured.
RESULTS
There was 100% union, no failure of fixation, no revision surgery and no delayed union in either group. The radiological prominence of screws was significant (=0.02), but there was no significant difference in soft-tissue irritation (=0.36) or removal of implants (=0.49). Two cortical breaches (5.8%) occurred in staple fixation and 4 (10.2%) in screw fixation (not statistically significant (NS), =0.50). The mean improvement in HI angle was 4.3° with screw fixation and 4.1° with staple fixation (NS, =0.69). The mean shortening of the proximal phalanx was 2.5mm with screw fixation and 2.3mm with staple fixation (NS, =0.64). The total cost was £1,925 for staple fixation and £4,290 for screw fixation.
CONCLUSIONS
Staple and screw fixation are reproducible modalities with satisfactory outcomes, but screw fixation is expensive. We conclude staple fixation is a cost-effective alternative.
Topics: Bone Screws; Female; Hallux Valgus; Humans; Male; Metatarsal Bones; Middle Aged; Osteotomy; Retrospective Studies; Sutures
PubMed: 34323127
DOI: 10.1308/rcsann.2021.0029 -
Operative Orthopadie Und Traumatologie Oct 2023Restoration of the original anatomy with reduction of both current symptoms and risk of posttraumatic osteoarthritis. (Review)
Review
OBJECTIVE
Restoration of the original anatomy with reduction of both current symptoms and risk of posttraumatic osteoarthritis.
INDICATIONS
Symptomatic intra- or extra-articular malunion due to limitation of movement and/or painful function, intra-articular step of > 1 mm, instability of the distal radioulnar joint.
CONTRAINDICATIONS
Minimal deformity. Pre-existing osteoarthritis Knirk and Jupiter II or higher. Simpler surgical alternative, e.g., ulna shortening osteotomy. Smoking or advanced age are not contraindications.
SURGICAL TECHNIQUE
Preoperative assessment and performance of a bilateral computed tomography (CT). Three-dimensional (3D) malposition analysis and calculation of the correction. Planning of the corrective osteotomy on the 3D model and creation of patient-specific drilling and sawing guides. Performing the 3D-guided osteotomy.
POSTOPERATIVE MANAGEMENT
Early functional unloaded mobilization with the splint for 8 weeks until consolidation control with CT.
RESULTS
Significant reduction of the step to < 1 mm (p ≤ 0.05) can be achieved with intra-articular corrections. In extra-articular corrective osteotomies, a mean residual rotational malalignment error of 2.0° (± 2.2°) and a translational malalignment error of 0.6 mm (± 0.2 mm) is achieved. Single-cut osteotomies in the shaft region can be performed to within a few degrees for rotation (e.g., pronation/supination 4.9°) and for translation (e.g., proximal/distal, 0.8 mm). After surgery, a mean residual 3D angle of 5.8° (SD 3.6°) was measured. Furthermore, surgical time for 3D-assisted surgery is significantly reduced compared to the conventional technique (140 ± 37 vs 108 ± 26 min; p < 0.05). Thus, the progression of osteoarthritis can be reduced in the medium term and improved mobility and grip strength are achieved. The clinical outcome parameters based on patient-rated wrist evaluation (PRWE) and the disabilities of the arm, shoulder and hand (DASH) scores are roughly comparable.
Topics: Humans; Radius; Radius Fractures; Treatment Outcome; Fractures, Malunited; Osteotomy; Osteoarthritis; Range of Motion, Articular
PubMed: 37129610
DOI: 10.1007/s00064-023-00808-8 -
The Journal of Craniofacial SurgeryOrbital hypertelorism correction is still a less precise procedure, with a simple preoperative design and surgical results often depending on the operator's experience....
Orbital hypertelorism correction is still a less precise procedure, with a simple preoperative design and surgical results often depending on the operator's experience. In recent years, computer-assisted technology has been fully utilized in craniofacial surgery. This article aims to explore the clinical results of computer-assisted technology in orbital hypertelorism correction and discuss its advantages and effects on treatment. Four patients with orbital hypertelorism underwent intracranial and extracranial combined box osteotomy correction. Preoperative computed tomography scans were performed, and 3-dimensional 3D digital technology was used to measure the orbital spacing, virtually design the 3D cutting scheme, and guide the intraoperative 3D cutting to improve the accuracy of periorbital osteotomy and reduce the surgical risk. Four patients underwent successful surgery, and the average distance of the medial orbital wall was decreased from 43.6 to 23.4 mm. Computer-assisted box osteotomy shortens the operative time and provides better corrective results.
Topics: Humans; Hypertelorism; Orbit; Plastic Surgery Procedures; Tomography, X-Ray Computed; Osteotomy; Surgery, Computer-Assisted
PubMed: 36217222
DOI: 10.1097/SCS.0000000000009046 -
European Review For Medical and... Oct 2023In this retrospective and multicentric study, we investigated applied surgical methods in rhinoplasty for crooked nose deformity.
OBJECTIVE
In this retrospective and multicentric study, we investigated applied surgical methods in rhinoplasty for crooked nose deformity.
PATIENTS AND METHODS
The retrospective data for 300 crooked nose deformity cases (191 males and 109 females) were used in our study. Classification of the initial deformities was performed as (1) I-shaped crooked nose deformity, (2) C-shaped crooked nose deformity, (3) Reverse C-shaped crooked nose deformity, and (4) S-shaped crooked nose deformity. As an operation technique, L-strut septoplasty was performed. The applied surgical methods in rhinoplasty to correct the crooked nose are evaluated and classified.
RESULTS
Our results showed that initial deformities in crooked nose patients were I-shaped crooked nose deformity (34%), C-shaped crooked nose deformity (28%), Reverse C-shaped crooked nose deformity (21.3%), and S-shaped crooked nose deformity (16.7%). L-strut septoplasty was performed, and the results of the applied methods to correct the crooked nose were evaluated and classified. It was noticed that more than one procedure was applied to each case: (1) double-side lateral osteotomy (86.6%), (2) wedge bone resection on one side of the osteotomy (7.3%), (3) single-side lateral osteotomy (6%), (4) symmetric spreader grafts (56%), (5) asymmetric spreader grafts (10.6%), (6) shaving of the transverse wing of dorsal septum (8%), (7) correction of deviated dorsal septum (16.3%), (8) displaced anterior nasal spine (12.6%), (9) clocking suture (dorsal septal rotation suture) (9%), (10) dorsal septal scoring and splinting graft (8.3%), and equalizing lateral cruses (12.6%).
CONCLUSIONS
I-shaped and C-shaped crooked nose deformities were mainly detected in crooked nose deformity patients. Correcting the crooked nose, double-side lateral osteotomy, and symmetric spreader grafts were the most applied techniques to correct the crooked nose. Other rhinoplasty techniques were also applied to these patients; more than one technique was needed.
Topics: Male; Female; Humans; Rhinoplasty; Nasal Septum; Retrospective Studies; Nose; Osteotomy; Sutures; Treatment Outcome
PubMed: 37869941
DOI: 10.26355/eurrev_202310_34062 -
Clinical Biomechanics (Bristol, Avon) Dec 2023High tibial osteotomy surgery is a widely successful joint-preserving procedure which alters the hip-knee-ankle axis which can delay the progression of osteoarthritis;...
BACKGROUND
High tibial osteotomy surgery is a widely successful joint-preserving procedure which alters the hip-knee-ankle axis which can delay the progression of osteoarthritis; however, conventional osteotomy surgical procedures do not adequately control the posterior tibial slope. This study aimed to determine the key variables influencing posterior tibial slope during high tibial osteotomy and provide a simple means of implementing the findings during pre-operative planning.
METHODS
A virtual cohort of twenty-eight proximal tibia geometries of knee osteoarthritis patients was used in the study. Firstly, absolute posterior tibial slope values were contrasted using anatomical and posterior mechanical axis measurement approaches. Secondly, the influence of variables affecting posterior tibial slope change during osteotomy surgery was investigated using 3D preoperative planning surgical simulation and analytical modelling.
FINDINGS
There was a poor correlation (R = 0.38) between the different clinical measurements of posterior tibial slope; with an average of 7.0 ± 1.3° and 14.8 ± 2.2° respectively. An analytical solution for the change in posterior tibial slope was derived based on the hinge axis angle and the osteotomy opening angle. For three different opening angles (6°, 9° and 12°) and seven different hinge axis orientations (-30° to +30°), the results obtained were identical for the analytical model and the 3D preoperative planning.
INTERPRETATION
This study determined that the key variables affecting posterior tibial slope during high tibial osteotomy are the osteotomy opening angle and the hinge axis orientation. The derived formula provides a simple means of determining the change in posterior tibial slope resulting from a particular surgical approach.
Topics: Humans; Tibia; Knee Joint; Osteoarthritis, Knee; Knee; Osteotomy
PubMed: 37922607
DOI: 10.1016/j.clinbiomech.2023.106125