The aim of this study was to determine whether total hip arthroplasty (THA) for chronic hip pain due to unilateral primary osteoarthritis (OA) has a beneficial effect on cognitive performance. A prospective cohort study was conducted with 101 patients with end-stage hip OA scheduled for THA (mean age 67.4 years (SD 9.5), 51.5% female (n = 52)). Patients were assessed at baseline as well as after three and months. Primary outcome was cognitive performance measured by d2 Test of Attention at six months, Trail Making Test (TMT), FAS-test, Rivermead Behavioural Memory Test (RBMT; story recall subtest), and Rey-Osterrieth Complex Figure Test (ROCF). The improvement of cognitive performance was analyzed using repeated measures analysis of variance.Aims
Methods
The aim of this study was to compare open reduction and internal fixation (ORIF) with revision surgery for the surgical management of Unified Classification System (UCS) type B periprosthetic femoral fractures around cemented polished taper-slip femoral components following primary total hip arthroplasty (THA). Data were collected for patients admitted to five UK centres. The primary outcome measure was the two-year reoperation rate. Secondary outcomes were time to surgery, transfusion requirements, critical care requirements, length of stay, two-year local complication rates, six-month systemic complication rates, and mortality rates. Comparisons were made by the form of treatment (ORIF vs revision) and UCS type (B1 vs B2/B3). Kaplan-Meier survival analysis was performed with two-year reoperation for any reason as the endpoint.Aims
Methods
Hip arthroscopy (HA) has become the treatment of choice for femoroacetabular impingement (FAI). However, less favourable outcomes following arthroscopic surgery are expected in patients with severe chondral lesions. The aim of this study was to assess the outcomes of HA in patients with FAI and associated chondral lesions, classified according to the Outerbridge system. A systematic search was performed on four databases. Studies which involved HA as the primary management of FAI and reported on chondral lesions as classified according to the Outerbridge classification were included. The study was registered on PROSPERO. Demographic data, patient-reported outcome measures (PROMs), complications, and rates of conversion to total hip arthroplasty (THA) were collected.Aims
Methods
Total hip replacement (THR) is a very common
procedure undertaken in up to 285 000 Americans each year. Patient
satisfaction with THR is very high, with improvements in general
health, quality of life, and function while at the same time very
cost effective. Although the majority of patients have a high degree
of satisfaction with their THR, 27% experience some discomfort,
and up to 6% experience severe
The aim of this study was to understand the experience of mature patients who undergo a periacetabular osteotomy (PAO), a major hip-preserving surgical procedure that treats symptomatic hip dysplasia by realigning the acetabulum. Our aim was to improve our understanding of how the operation affected the lives of patients and their families, with a long-term goal of improving their experience. We used a phenomenological approach with in-depth, semi-structured interviews to investigate the experience of seven female patients, aged between 25 and 40 years, who underwent a PAO. A modified homogeneity sampling approach coupled with criterion sampling was used. Inclusion criteria involved having at least one child at home and being in a committed relationship with a spouse or partner.Aims
Methods
The aim of this study was to estimate time to arthroplasty among patients with hip and knee osteoarthritis (OA), and to identify factors at enrolment to first-line intervention that are prognostic for progression to surgery. In this longitudinal register-based observational study, we identified 72,069 patients with hip and knee OA in the Better Management of Patients with Osteoarthritis Register (BOA), who were referred for first-line OA intervention, between May 2008 and December 2016. Patients were followed until the first primary arthroplasty surgery before 31 December 2016, stratified into a hip and a knee OA cohort. Data were analyzed with Kaplan-Meier and multivariable-adjusted Cox regression.Aims
Methods
Due to the opioid epidemic in the USA, our service progressively decreased the number of opioid tablets prescribed at discharge after primary hip (THA) and knee (TKA) arthroplasty. The goal of this study was to analyze the effect on total morphine milligram equivalents (MMEs) prescribed and post-discharge opioid repeat prescriptions. We retrospectively reviewed 19,428 patients undergoing a primary THA or TKA between 1 February 2016 and 31 December 2019. Two reductions in the number of opioid tablets prescribed at discharge were implemented over this time; as such, we analyzed three periods (P1, P2, and P3) with different routine discharge MME (750, 520, and 320 MMEs, respectively). We investigated 90-day refill rates, refill MMEs, and whether discharge MMEs were associated with represcribing in a multivariate model.Aims
Methods
The aim of this study was to evaluate the accuracy of implant placement when using robotic assistance during total hip arthroplasty (THA). A total of 20 patients underwent a planned THA using preoperative CT scans and robotic-assisted software. There were nine men and 11 women (n = 20 hips) with a mean age of 60.8 years (Aims
Patients and Methods
The purpose of this retrospective study was to evaluate the minimum
five-year outcome of revision total hip arthroplasty (THA) using
the Kerboull acetabular reinforcement device (KARD) in patients
with Paprosky type III acetabular defects and destruction of the
inferior margin of the acetabulum. We identified 36 patients (37 hips) who underwent revision THA
under these circumstances using the KARD, fresh frozen allograft
femoral heads, and reconstruction of the inferior margin of the
acetabulum. The Merle d’Aubigné system was used for clinical assessment.
Serial anteroposterior pelvic radiographs were used to assess migration
of the acetabular component.Aims
Patients and Methods
In this retrospective study, we investigated
the results of revision total hip replacement (THR) using a cemented long-stemmed
Exeter femoral component, with a minimum length of 205 mm in patients
with extensive femoral bone defects. The study included 37 consecutive
patients with a mean age of 76 years (39 to 93) and a mean follow-up
of nine years (5 to 16). A total of 26 patients (70%) had a pre-operative
Endo-Klinik score of 3 or 4. Impaction bone grafting was used in
24 patients (65%). At the time of evaluation, 22 patients (59%)
were still alive and were evaluated clinically and radiologically.
A total of 14 patients died during follow-up and their data were
included until the time of their death. One reconstruction failed
after five years and five months owing to recurrent dislocation:
the hip was converted to an excision arthroplasty. Intra-operative
fractures or fissures were encountered in nine patients (24%), but
none occurred during impaction of the bone graft. Post-operative
peri-prosthetic fractures occurred in two patients (5%); both were
treated with plate fixation. At nine years, survival with the endpoint
of all-cause re-revision was 96.3% (95% CI 76.4 to 99.5); including
re-operations for any reason, it was 80.7% (95% CI 56.3 to 92.3%).
There were no re-revisions for aseptic loosening. The survival of long stem cemented femoral components following
revision THR is satisfactory in a fragile population with extensive
femoral defects. Cite this article:
Hip and groin injuries are common in athletes
who take part in high level sports. Adductor muscle tendon injuries represent
a small but important number of these injuries. Avulsion of the
tendons attached to the symphysis pubis has previously been described:
these can be managed both operatively and non-operatively. We describe
an uncommon variant of this injury, namely complete avulsion of
the adductor sleeve complex: this includes adductor longus, pectineus
and rectus abdominis. We go on to describe a surgical technique
which promotes a full return to the pre-injury level of sporting
activity. Over a period of ten years, 15 high-level athletes with an MRI-confirmed
acute adductor complex avulsion injury (six to 34 days old) underwent
surgical repair. The operative procedure consisted of anatomical
re-attachment of the avulsed tissues in each case and mesh reinforcement
of the posterior inguinal wall in seven patients. All underwent a
standardised rehabilitation programme, which was then individualised
to be sport-specific. One patient developed a superficial wound infection, which was
successfully treated with antibiotics. Of the 15 patients, four
complained of transient local numbness which resolved in all cases.
All patients (including seven elite athletes) returned to their
previous level of participation in sport. Cite this article:
This study reports the clinical outcome of reconstruction
of deficient abductor muscles following revision total hip arthroplasty
(THA), using a fresh–frozen allograft of the extensor mechanism
of the knee. A retrospective analysis was conducted of 11 consecutive
patients with a severe limp because of abductor deficiency which
was confirmed on MRI scans. The mean age of the patients (three
men and eight women) was 66.7 years (52 to 84), with a mean follow-up
of 33 months (24 to 41). Following surgery, two patients had no limp, seven had a mild
limp, and two had a persistent severe limp (p = 0.004). The mean
power of the abductors improved on the Medical Research Council
scale from 2.15 to 3.8 (p <
0.001). Pre-operatively, all patients
required a stick or walking frame; post-operatively, four patients
were able to walk without an aid. Overall, nine patients had severe
or moderate pain pre-operatively; ten patients had no or mild pain
post-operatively. At final review, the Harris hip score was good in five patients,
fair in two and poor in four. We conclude that using an extensor mechanism allograft is relatively
effective in the treatment of chronic abductor deficiency of the
hip after THA when techniques such as local tissue transfer are
not possible. Longer-term follow-up is necessary before the technique can be
broadly applied. Cite this article:
The outcome of 219 revision total hip arthroplasties
(THAs) in 98 male and 121 female patients, using 137 long length
and 82 standard length cemented collarless double-taper femoral
stems in 211 patients, with a mean age of 72 years (30 to 90) and
mean follow-up of six years (two to 18) have been described previously.
We have extended the follow-up to a mean of 13 years (8 to 20) in
this cohort of patients in which the pre-operative bone deficiency Paprosky
grading was IIIA or worse in 79% and 73% of femurs with long and
standard stems, respectively. For the long stem revision group, survival to re-revision for
aseptic loosening at 14 years was 97% (95% confidence interval (CI)
91 to 100) and in patients aged >
70 years, survival was 100%. Two
patients (two revisions) were lost to follow-up and 86 patients
with 88 revisions had died. Worst-case analysis for survival to
re-revision for aseptic loosening at 14 years was 95% (95% CI 89
to 100) and 99% (95% CI 96 to 100) for patients aged >
70 years. One
additional long stem was classified as loose radiographically but
not revised. For the standard stem revision group, survival to re-revision
for aseptic loosening at 14 years was 91% (95% CI 83 to 99). No
patients were lost to follow-up and 49 patients with 51 hips had
died. No additional stems were classified as loose radiographically. Femoral revision using a cemented collarless double-taper stem,
particularly with a long length stem, and in patients aged >
70
years, continues to yield excellent results up to 20 years post-operatively,
including in hips with considerable femoral metaphyseal bone loss. Cite this article:
There is a high risk of the development of avascular
necrosis of the femoral head and nonunion after the treatment of
displaced subcapital fractures of the femoral neck in patients aged
<
50 years. We retrospectively analysed the results following
fixation with two cannulated compression screws and a vascularised
iliac bone graft. We treated 18 women and 16 men with a mean age
of 38.5 years (20 to 50) whose treatment included the use of an
iliac bone graft based on the ascending branch of lateral femoral
circumflex artery. There were 20 Garden grade III and 14 grade IV
fractures. Clinical and radiological outcomes were evaluated. The
mean follow-up was 5.4 years (2 to 10). In 30 hips (88%) union was
achieved at a mean of 4.4 months (4 to 6). Nonunion occurred in
four hips (12%) and these patients had a mean age of 46.5 years
(42 to 50) and underwent revision to a hip replacement six months
after operation. The time to union was dependent on age with younger
patients achieving earlier union (p <
0.001). According to the
Harris hip score which was available for 27 of the 30 hips with
satisfactory union, excellent results were obtained in 15 (score ≥ 90
points), fair in ten (score 80 to 90 points), and poor in two hips
(≤ 80 points). One patient aged 48 years developed avascular necrosis
of femoral head six years after operation and underwent total hip
replacement. The management of displaced subcapital fractures of the femoral
neck, in patients aged <
50 years, with two cannulated compression
screws and an iliac bone graft based on the ascending branch of
lateral femoral circumflex artery, gives satisfactory results with
a low rate of complication including avascular necrosis and nonunion. Cite this article:
Our understanding of the origin of hip pain in
degenerative disorders of the hip, including primary osteoarthritis, avascular
necrosis and femoroacetabular impingement (FAI), is limited. We
undertook a histological investigation of the nociceptive innervation
of the acetabular labrum, ligamentum teres and capsule of the hip,
in order to prove pain- and proprioceptive-associated marker expression.
These structures were isolated from 57 patients who had undergone
elective hip surgery (44 labral samples, 33 ligamentum teres specimens,
34 capsular samples; in 19 patients all three structures were harvested).
A total of
15 000 histological sections were prepared that were investigated
immunohistochemically for the presence of protein S-100, 68 kDa
neurofilament, neuropeptide Y, nociceptin and substance P. The tissues
were evaluated in six representative areas. Within the labrum, pain-associated free nerve ending expression
was located predominantly at its base, decreasing in the periphery.
In contrast, the distribution within the ligamentum teres showed
a high local concentration in the centre. The hip capsule had an
almost homogeneous marker expression in all investigated areas. This study showed characteristic distribution profiles of nociceptive
and pain-related nerve fibres, which may help in understanding the
origin of hip pain. Cite this article:
The β-angle is a radiological tool for measuring the distance between the pathological head-neck junction and the acetabular rim with the hip in 90° of flexion in patients with femoroacetabular impingement. Initially it was measured using an open-chamber MRI. We have developed a technique to measure this angle on plain radiographs. Correlation analysis was undertaken to determine the relationship between the range of movement and the β-angle in 50 patients with femoroacetabular impingement and 50 asymptomatic control subjects. Inter- and intra-observer reliability of the β-angle was also evaluated. Patients with femoroacetabular impingement had a significantly smaller (p <
0.001) mean β-angle (15.6°, 95% confidence interval (CI) 13.3 to 17.7) compared with the asymptomatic group (38.7°, 95% CI 36.5 to 41.0). Correlation between internal rotation and the β-angle was high in the impingement group and moderate in the asymptomatic group. The β-angle had excellent inter- and intra-observer reliability in both groups. Our findings suggest that the measurement of the β-angle on plain radiography may represent a valid, reproducible and cost-effective alternative to open MRI in the assessment of the pathological bony anatomy in patients with cam, pincer and mixed femoroacetabular impingement.
We evaluated the potential of a vastus lateralis muscle flap in controlling infection after resection arthroplasty of the hip. We retrospectively reviewed 119 patients with 120 chronic infections after resection arthroplasty treated with this procedure. The flap was fixed with Mitek anchors in the acetabular cavity. The mean duration of infection after resection before the muscle flap procedure was 6.5 months (2 to 13). The patients had previously undergone a mean of 4.9 operations (2 to 25). In all patients the infected cavity was the origin of the persistent infection. The mean follow-up was for 2.6 years (1.0 to 4.7). No patient had recurrent infection post-operatively and all had an improvement in the pain and better quality of life.
In this study we hypothesised that anxiety/depression, one of five dimensions in the health-related quality of life (HRQoL) measurement tool EQ-5D, could predict outcome after total hip replacement surgery. Pre-operative and one-year post-operative data from the Swedish Hip Arthroplasty Register, including 6158 patients with primary osteoarthritis of the hip, were analysed. In order to examine the association between anxiety and outcome with respect to pain and satisfaction an analysis of covariance was used. The pre-operative EQ-5D anxiety/depression dimension was a strong predictor for pain relief and patient satisfaction (p <
0.001). Orthopaedic surgeons involved in the care of patients eligible for total hip replacement surgery should be aware that mental health may influence post-operative pain and HRQoL. An appropriate assessment of mental health may enable a modification in the way these patients are managed in order to optimise the outcome after joint replacement surgery.
We investigated 219 revisions of total hip replacement (THR) in 211 patients using a collarless double-taper cemented femoral component. The mean age of the patients was 72 years (30 to 90). The 137 long and 82 standard length stems were analysed separately. The mean follow-up was six years (2 to 18), and no patient was lost to follow-up. Survival of the long stems to re-revision for aseptic loosening at nine years was 98% (95% confidence interval (CI) 94 to 100), and for the standard stems was 93% (95% CI 85 to 100). At five years, one long stem was definitely loose radiologically and one standard stem was probably loose. Pre-operative femoral bone deficiency did not influence the results for the long stems, and corrective femoral osteotomy was avoided, as were significant subsidence, major stress shielding and persistent thigh pain. Because of these reliable results, cemented long collarless double-taper femoral components are recommended for routine revision THR in older patients.
Revision arthroplasty after infection can often be complicated by both extensive bone loss and a relatively high rate of re-infection. Using allograft to address the bone loss in such patients is controversial because of the perceived risk of bacterial infection from the use of avascular graft material. We describe 12 two-stage revisions for infection in which segmental allografts were loaded with antibiotics using iontophoresis, a technique using an electrical potential to drive ionised antibiotics into cortical bone. Iontophoresis produced high levels of antibiotic in the allograft, which eluted into the surrounding tissues. We postulate that this offers protection from infection in the high-risk peri-operative period. None of the 12 patients who had two-stage revision with iontophoresed allografts had further infection after a mean period of 47 months (14 to 78).
