To assess the structure and extracellular matrix molecule expression of osteogenic cell sheets created via culture in medium with both dexamethasone (Dex) and ascorbic acid phosphate (AscP) compared either Dex or AscP alone. Osteogenic cell sheets were prepared by culturing rat bone marrow stromal cells in a minimal essential medium (MEM), MEM with AscP, MEM with Dex, and MEM with Dex and AscP (Dex/AscP). The cell number and messenger (m)RNA expression were assessed Objectives
Methods
The custom triflange is a patient-specific implant
for the treatment of severe bone loss in revision total hip arthroplasty
(THA). Through a process of three-dimensional modelling and prototyping,
a hydroxyapatite-coated component is created for acetabular reconstruction.
There are seven level IV studies describing the clinical results
of triflange components. The most common complications include dislocation
and infection, although the rates of implant removal are low. Clinical
results are promising given the challenging problem. We describe
the design, manufacture and implantation process and review the
clinical results, contrasting them to other methods of acetabular
reconstruction in revision THA. Cite this article:
We investigated changes in the axial alignment of the ipsilateral
hip and knee after total hip arthroplasty (THA). We reviewed 152 patients undergoing primary THA (163 hips; 22
hips in men, 141 hips in women) without a pre-operative flexion
contracture. The mean age was 64 years (30 to 88). The diagnosis
was osteoarthritis (OA) in 151 hips (primary in 18 hips, and secondary
to dysplasia in 133) and non-OA in 12 hips. A posterolateral approach
with repair of the external rotators was used in 134 hips and an
anterior approach in 29 hips. We measured changes in leg length
and offset on radiographs, and femoral anteversion, internal rotation
of the hip and lateral patellar tilt on CT scans, pre- and post-operatively. Aims
Patients and Methods
We describe 13 patients with cerebral palsy and
lordoscoliosis/hyperlordosis of the lumbar spine who underwent a posterior
spinal fusion at a mean age of 14.5 years (10.8 to 17.4) to improve
sitting posture and relieve pain. The mean follow-up was 3.3 years
(2.2 to 6.2). The mean pre-operative lumbar lordosis was 108° (80
to 150°) and was corrected to 62° (43° to
85°); the mean thoracic kyphosis from 17° (-23° to
35°) to 47° (25° to 65°);
the mean scoliosis from 82° (0° to 125°)
to 22° (0° to 40°); the mean pelvic
obliquity from 21° (0° to 38°)
to 3° (0° to 15°); the mean sacral
slope from 79° (54° to 90°) to
50° (31° to 66°). The mean pre-operative
coronal imbalance was 5 cm (0 cm to 8.9 cm) and was corrected to
0.6 cm (0 to 3.2). The mean sagittal imbalance of -8 cm (-16 cm
to 7.8 cm) was corrected to -1.6 cm
(-4 cm to 2.5 cm). The mean operating time was 250 minutes (180
to 360 minutes) and intra-operative blood loss 0.8 of estimated
blood volume (0.3 to 2 estimated blood volume). The mean intensive
care and hospital stay were 3.5 days (2 to 8) and 14.5 days (10
to 27), respectively. Three patients lost a significant amount of
blood intra-operatively and subsequently developed chest or urinary
infections and superior mesenteric artery syndrome. An increased pre-operative lumbar lordosis and sacral slope were
associated with increased peri-operative morbidity: scoliosis and
pelvic obliquity were not. A reduced lumbar lordosis and increased
thoracic kyphosis correlated with better global sagittal balance
at follow-up. All patients and their parents reported excellent
surgical outcomes. Lordoscoliosis and hyperlordosis are associated with significant
morbidity in quadriplegic patients. They are rare deformities and
their treatment is challenging. Sagittal imbalance is the major
component: it can be corrected by posterior fusion of the spine
with excellent functional results. Cite this article:
The purpose of this study was to compare the thickness of the hip capsule in patients with surgical hip disease, either with cam-femoroacetabular impingement (FAI) or non-FAI hip pathology, with that of asymptomatic control hips. A total of 56 hips in 55 patients underwent a 3Tesla MRI of the hip. These included 40 patients with 41 hips with arthroscopically proven hip disease (16 with cam-FAI; nine men, seven women; mean age 39 years, 22 to 58) and 25 with non-FAI chondrolabral pathology (four men, 21 women; mean age 40 years, 18 to 63) as well as 15 asymptomatic volunteers, whose hips served as controls (ten men, five women; mean age 62 years, 33 to 77). The maximal capsule thickness was measured anteriorly and superiorly, and compared within and between the three groups with a gender subanalysis using student’s Objectives
Methods
The modified Smith–Petersen and Kocher–Langenbeck
approaches were used to expose the lateral cutaneous nerve of the
thigh and the femoral, obturator and sciatic nerves in order to
study the risk of injury to these structures during the dissection,
osteotomy, and acetabular reorientation stages of a Bernese peri-acetabular
osteotomy. Injury of the lateral cutaneous nerve of thigh was less likely
to occur if an osteotomy of the anterior superior iliac spine had
been carried out before exposing the hip. The obturator nerve was likely to be injured during unprotected
osteotomy of the pubis if the far cortex was penetrated by >
5 mm.
This could be avoided by inclining the osteotome 45° medially and
performing the osteotomy at least 2 cm medial to the iliopectineal
eminence. The sciatic nerve could be injured during the first and last
stages of the osteotomy if the osteotome perforated the lateral
cortex of ischium and the ilio-ischial junction by >
10 mm. The femoral nerve could be stretched or entrapped during osteotomy
of the pubis if there was significant rotational or linear displacement
of the acetabulum. Anterior or medial displacement of <
2 cm
and lateral tilt (retroversion) of <
30° were safe margins. The
combination of retroversion and anterior displacement could increase tension
on the nerve. Strict observation of anatomical details, proper handling of
the osteotomes and careful manipulation of the acetabular fragment
reduce the neurological complications of Bernese peri-acetabular
osteotomy. Cite this article:
Patients with multiple myeloma (MM) develop deposits in the spine
which may lead to vertebral compression fractures (VCFs). Our aim
was to establish which spinopelvic parameters are associated with
the greatest disability in patients with spinal myeloma and VCFs. We performed a retrospective cross-sectional review of 148 consecutive
patients (87 male, 61 female) with spinal myeloma and analysed correlations
between spinopelvic parameters and patient-reported outcome scores.
The mean age of the patients was 65.5 years (37 to 91) and the mean
number of vertebrae involved was 3.7 (1 to 15).Aims
Patients and Methods
Patients undergoing femoral lengthening by external fixation
tolerate treatment less well when compared to tibial lengthening.
Lengthening of the femur with an intramedullary device may have
advantages. We reviewed all cases of simple femoral lengthening performed
at our unit from 2009 to 2014. Cases of nonunions, concurrent deformities,
congenital limb deficiencies and lengthening with an unstable hip
were excluded, leaving 33 cases (in 22 patients; 11 patients had
bilateral procedures) for review. Healing index, implant tolerance
and complications were compared.Aims
Patients and Methods
Exsanguination is the second most common cause
of death in patients who suffer severe trauma. The management of
haemodynamically unstable high-energy pelvic injuries remains controversial,
as there are no universally accepted guidelines to direct surgeons
on the ideal use of pelvic packing or early angio-embolisation.
Additionally, the optimal resuscitation strategy, which prevents
or halts the progression of the trauma-induced coagulopathy, remains
unknown. Although early and aggressive use of blood products in
these patients appears to improve survival, over-enthusiastic resuscitative
measures may not be the safest strategy. This paper provides an overview of the classification of pelvic
injuries and the current evidence on best-practice management of
high-energy pelvic fractures, including resuscitation, transfusion
of blood components, monitoring of coagulopathy, and procedural
interventions including pre-peritoneal pelvic packing, external
fixation and angiographic embolisation. Cite this article:
The October 2015 Oncology Roundup360 looks at: Radiotherapy for the radioresistant; Multiple hereditary exostosis; The total femur as a limb salvage option; Survival prediction in osteosarcoma; What happens when chondrosarcoma recurs?; Thumbs up for vascularised fibular graft; Radiotherapy and survival; Musculoskeletal tumours in pregnancy
To determine the pattern of mutations of the A total of 15 patients with clinical features of PPD were enrolled in this study. Genomic DNA was isolated and polymerase chain reaction performed to amplify the Objectives
Patients and Methods
There is no single standardised method of measuring
the orientation of the acetabular component on plain radiographs
after total hip arthroplasty. We assessed the reliability and accuracy
of three methods of assessing anteversion of the acetabular component
for 551 THAs using the PolyWare software and the methods of Liaw
et al, and of Woo and Morrey. All measurements of the three methods
had excellent intra- and inter-observer reliability. The values
of the PolyWare software, which determines version of the acetabular
component by edge detection were regarded as the reference standard.
Although the PolyWare software and the method of Liaw et al were similarly
precise, the method of Woo and Morrey was significantly less accurate
(p <
0.001). The method of Liaw et al seemed to be more accurate
than that of Woo and Morrey when compared with the measurements
using the PolyWare software. If the qualified lateral radiograph
was selected, anteversion measured using the method of Woo and Morrey
was considered to be relatively reliable. Cite this article:
Injuries to the foot in athletes are often subtle
and can lead to a substantial loss of function if not diagnosed
and treated appropriately. For these injuries in general, even after
a diagnosis is made, treatment options are controversial and become
even more so in high level athletes where limiting the time away
from training and competition is a significant consideration. In this review, we cover some of the common and important sporting
injuries affecting the foot including updates on their management
and outcomes. Cite this article:
In this study we used subject-specific finite
element analysis to investigate the mechanical effects of rotational acetabular
osteotomy (RAO) on the hip joint and analysed the correlation between
various radiological measurements and mechanical stress in the hip
joint. We evaluated 13 hips in 12 patients (two men and ten women, mean
age at surgery 32.0 years; 19 to 46) with developmental dysplasia
of the hip (DDH) who were treated by RAO. Subject-specific finite element models were constructed from
CT data. The centre–edge (CE) angle, acetabular head index (AHI),
acetabular angle and acetabular roof angle (ARA) were measured on
anteroposterior pelvic radiographs taken before and after RAO. The
relationship between equivalent stress in the hip joint and radiological measurements
was analysed. The equivalent stress in the acetabulum decreased from 4.1 MPa
(2.7 to 6.5) pre-operatively to 2.8 MPa (1.8 to 3.6) post-operatively
(p <
0.01). There was a moderate correlation between equivalent
stress in the acetabulum and the radiological measurements: CE angle
(R = –0.645, p <
0.01); AHI (R = –0.603, p <
0.01); acetabular
angle (R = 0.484, p = 0.02); and ARA (R = 0.572, p <
0.01). The equivalent stress in the acetabulum of patients with DDH
decreased after RAO. Correction of the CE angle, AHI and ARA was
considered to be important in reducing the mechanical stress in
the hip joint. Cite this article:
Cancellous allograft bone chips are commonly
used in the reconstruction of defects in bone after removal of benign tumours.
We investigated the MRI features of grafted bone chips and their
change over time, and compared them with those with recurrent tumour.
We retrospectively reviewed 66 post-operative MRIs from 34 patients
who had undergone curettage and grafting with cancellous bone chips
to fill the defect after excision of a tumour. All grafts showed
consistent features at least six months after grafting: homogeneous
intermediate or low signal intensities with or without scattered
hyperintense foci (speckled hyperintensities) on T1 images; high
signal intensities with scattered hypointense foci (speckled hypointensities)
on T2 images, and peripheral rim enhancement with or without central
heterogeneous enhancements on enhanced images. Incorporation of
the graft occurred from the periphery to the centre, and was completed
within three years. Recurrent lesions consistently showed the same signal
intensities as those of pre-operative MRIs of the primary lesions.
There were four misdiagnoses, three of which were chondroid tumours. We identified typical MRI features and clarified the incorporation
process of grafted cancellous allograft bone chips. The most important
characteristics of recurrent tumours were that they showed the same
signal intensities as the primary tumours. It might sometimes be
difficult to differentiate grafted cancellous allograft bone chips
from a recurrent chondroid tumour. Cite this article:
The December 2014 Research Roundup360 looks at: demineralised bone matrix not as good as we thought?; trunk control following ACL reconstruction; subclinical thyroid dysfunction: not quite subclinical?; establishing musculoskeletal function in mucopolysaccharidosis; starting out: a first year in consultant practice under the spotlight; stroke and elective surgery; sepsis and clots; hip geometry and arthritis incidence; and theatre discipline and infection.
The December 2014 Knee Roundup360 looks at: national guidance on arthroplasty thromboprophylaxis is effective; unicompartmental knee replacement has the edge in terms of short-term complications; stiff knees, timing and manipulation; neuropathic pain and total knee replacement; synovial fluid α-defensin and CRP: a new gold standard in joint infection diagnosis?; how to assess anterior knee pain?; where is the evidence? Five new implants under the spotlight; and a fresh look at ACL reconstruction
We report the results of Vulpius transverse gastrocsoleus
recession for equinus gait in 26 children with cerebral palsy (CP),
using the Gait Profile Score (GPS), Gait Variable Scores (GVS) and
movement analysis profile. All children had an equinus deformity
on physical examination and equinus gait on three-dimensional gait
analysis prior to surgery. The pre-operative and post-operative
GPS and GVS were statistically analysed. There were 20 boys and
6 girls in the study cohort with a mean age at surgery of 9.2 years
(5.1 to 17.7) and 11.5 years (7.3 to 20.8) at follow-up. Of the
26 children, 14 had spastic diplegia and 12 spastic hemiplegia.
Gait function improved for the cohort, confirmed by a decrease in
mean GPS from 13.4° pre-operatively to 9.0° final review (p <
0.001). The change was 2.8 times the minimal clinically important
difference (MCID). Thus the improvements in gait were both clinically and
statistically significant. The transverse gastrocsoleus recession
described by Vulpius is an effective procedure for equinus gait
in selected children with CP, when there is a fixed contracture
of the gastrocnemius and soleus muscles. Cite this article:
The aim of this cadaver study was to identify
the change in position of the sciatic nerve during arthroplasty
using the posterior surgical approach to the hip. We investigated
the position of the nerve during this procedure by dissecting 11
formalin-treated cadavers (22 hips: 12 male, ten female). The distance
between the sciatic nerve and the femoral neck was measured before
and after dislocation of the hip, and in positions used during the
preparation of the femur. The nerve moves closer to the femoral
neck when the hip is flexed to >
30° and internally rotated to 90° (90°
IR). The mean distance between the nerve and femoral neck was 43.1
mm (standard deviation ( This study demonstrates that the sciatic nerve becomes closer
to the operative field during hip arthroplasty using the posterior
approach with progressive flexion of the hip. Cite this article: