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Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_16 | Pages 47 - 47
1 Oct 2016
Halai M Jamal B Robinson P Qureshi M Kimpton J Syme B McMillan J Holt G
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Three distal femoral axes have been described to aid in alignment of the femoral component; the Trans Epicondylar Axis (TEA), the Posterior Condylar Axis (PCA) and the Antero Posterior (AP) axis. Our aim was to identify if there was a reproducible relationship between the axes which would aid alignment of the femoral component. This is the first study compare all three distal femoral axes with each other using magnetic resonance imaging (MRI) in a Caucasian population. Our sample group represents real life patients awaiting total knee arthroplasty (TKA), as opposed non-arthritic or cadaveric knees.

We identified the relationship between these rotational axes by performing MRI scans on 89 patients awaiting TKA with patient-specific instrumentation. Measurements were taken by two observers.

Patients had a mean age of 62.5 years (range 32–91). 51 patients were female. The mean angle between the TEA and the AP axis was 92.78° with a standard deviation of 2.51° (range 88° – 99°). The mean angle between the AP axis and the PCA was 95.43° with a standard deviation of 2.75° (range 85° – 105°). The mean angle between the TEA and the PCA was 2.78° with a standard deviation of 1.91° (range 0° – 10°).

We conclude that while there is a reproducible relationship between the differing femoral axes, there is a significant range in the relationship between the femoral axes. This range may lead to greater inaccuracy than has previously been appreciated when defining the rotation of the femoral component. There is most variation between the PCA and the AP axis. The TEA's relationship with the PCA and AP appears important in defining rotation. Due to the well accepted difficulty in defining the TEA intra-operatively, there may be a role for patient-specific instrumentation in TKA surgery with pre-operative MRI.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_7 | Pages 10 - 10
1 Apr 2014
Halai M Jamal B Robinson P Qureshi M Kimpton J Syme B McMillan J Holt G
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Three distal femoral axes have been described to aid in alignment of the femoral component; the Trans Epicondylar Axis (TEA), the Posterior Condylar Axis (PCA) and the Antero Posterior (AP) axis. Our aim was to identify if there was a reproducible relationship between the axes. Hopefully this will aid the surgeon to more accurately judge the rotation of the femoral cutting block by using the axes with the least variation. This is the first study compare all three distal femoral axes with each other using magnetic resonance imaging (MRI) in a Caucasian population awaiting total knee arthroplasty (TKA).

We identified the relationship between these axes by performing MRI scans on 89 patients awaiting TKA with patient-specific instrumentation. Measurements were taken by two observers.

Patients had a mean age of 62.5 years (range 32–91). 51 patients were female. The mean angle between the TEA and AP axis was 92.78°, standard deviation (SD) 2.51° (range 88°–99°). The mean angle between the AP axis and PCA was 95.43°, SD 2.75° (range 85°–105°). The mean angle between the TEA and PCA was 2.78°, SD 1.91° (range 0°–10°).

We conclude that while there is a reproducible relationship between the differing femoral axes, there is a significant range in the relationship between the femoral axes. This range may lead to greater inaccuracy than has previously been appreciated when defining the rotation of the femoral component. There is most variation between the PCA and the AP axis. Most systems have a cutting block with 3° of external rotation from the PCA and this would be parallel to the TEA in the majority, but not all, cases in this series. This data suggests that if the surgeon is to pick two axes to reference from, one should include the TEA.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_30 | Pages 30 - 30
1 Aug 2013
Sciberras NC Russell D McMillan J
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Frail patients with neck of femur fracture, amongst other medical problems, are frequently fast-tracked to orthopaedic wards to meet government A&E waiting time targets.

This is a second cycle of audit since 2008 examining the safety of fast-tracking following individual critical incidents. Data was collected prospectively between March and June 2011 by the first on-call orthopaedic doctor.

56 patients (12 male), average age 81.2y (50–97) were fast tracked. 52 were correctly referred as intra/extracapsular fracture, however 4 did not have a neck of femur fracture. 9 patients were transferred with no verbal referral to the receiving orthopaedic doctor. On arrival to the ward, 8 patients were found to have abnormal observations and acute medical problems requiring immediate review from the physicians. There were a total of 150 omissions from a total of 456 points from the fast track protocol. Vital observations of patients fast-tracked after 2100h were worse (MEWS range 0 to 11) when compared with those fast-tracked prior to 2100h (MEWS range 0 to 3). This occurs at a time when medical staff support is minimal.

Fast-tracking is a common practice amongst many district-general and some teaching hospitals in Scotland. These data support concerns from orthopaedic surgeons highlighting a need for more complete initial assessment and management in A&E prior to transfer to the ward. Recent evidence suggests medical optimisation of the multiple acute and chronic medical comorbidities common amongst patients with neck of femur fracture is the main facilitator of early surgery which significantly reduces post-operative mortality.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_30 | Pages 50 - 50
1 Aug 2013
Ferguson K Winter A McMillan J
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This case report describes a patient with thoracic plasmacytoma, an uncommon haematological malignancy, who presented with neck pain. Plasmacytoma is a neoplastic proliferation of B cell lineage but is much less common than multiple myeloma. The histological examination of multiple myeloma and plasmacytoma is identical however in plasmacytoma there is a solitary lesion with negative skeletal survey, negative bone marrow aspirate and little or no myeloma protein detected in the blood. This makes it more challenging to diagnose and a high index of suspicion is required.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_5 | Pages 6 - 6
1 Feb 2013
Sciberras N Russell D McMillan J
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Frail patients with neck of femur fracture often present to Accident & Emergency (A&E) with concomitant medical problems and are frequently fast-tracked to orthopaedic wards to achieve government waiting time targets.

This is a second cycle of audit since 2008 examining the safety of fast-tracking following several critical incidents. Data was collected prospectively between March and June 2011 by the first on-call orthopaedic doctor.

56 patients (12 male), average age 81.2y (50–97) were fast-tracked. 52 were correctly referred as having intra/extracapsular fracture; 4 patients did not have neck of femur fracture, but did have other medical problems. On arrival to the ward, 8 patients demonstrated abnormal symptoms, signs and vital observations requiring immediate review from the receiving physicians. For the 56 patients, a total of 448 mandatory points of protocol (e.g. intravenous access) should have been addressed prior to transfer; 150 were omitted (33.5%). Vital observations of patients fast-tracked after 2100h were worse (MEWS range 0 to 11) when compared with those fast-tracked prior to 2100h (MEWS range 0 to 3).

Fast-tracking is a common practice amongst many district-general and some teaching hospitals in Scotland. These data support concerns from orthopaedic surgeons and highlight the need for more complete management by A&E and, if necessary, referral to receiving medical staff prior to ward transfer. Early medical optimisation of acute and chronic comorbidities common to these patients is the main facilitator of early surgery. The evidence base demonstrates early surgery is a major variable in reducing post-operative mortality.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVIII | Pages 111 - 111
1 Sep 2012
Manolescu AR Johnston DWC Weber D Russel K Rigal W Greidanus TH McMillan J Beaupre L
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Purpose

Primary total hip arthroplasty (THA) has been a very successful surgical intervention for the management of end-stage arthritis in geriatric patients (> age 65). The mid- to long-term results have been less satisfactory however, in younger patients primarily due to the wear of the acetabular liner and loosening of the femoral component.

The primary study purpose was to compare pain, function and stiffness over the first five years in a population less than 60 years of age who received either an alumina liner/alumina femoral head (alumina group) or a crossfire UHMWPE liner/alumina head (Poly group) following primary THA. Secondarily, we compared re-operation rates over five years between these two groups.

Method

This was a randomized, controlled clinical trial of subjects with non-inflammatory OA who were booked for primary THA and consented to participate in the study. Subjects were evaluated pre-operatively and again at one and five years post-operatively by an evaluator who was blinded to group allocation. At each assessment, subjects completed the WOMAC Osteoarthritis Index (WOMAC); complications and re-operations were also recorded. All analyses were performed on an intention to treat basis.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XI | Pages 25 - 25
1 Apr 2012
Jamal B McMillan J
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Upper limb lacerations are a common injury. Traditionally, these have been assessed and treated in the Emergency Department (ED). This has become increasingly rare. A number of different reasons have been postulated. These include the increasingly junior status of those that work within the ED and the 4 hour target within the ED. After referral to the orthopaedic department, these patients are often assessed by increasingly junior staff. Thus, when these patients are assessed by a sufficiently qualified practitioner, there exists no option but to take them to theatre for repair of their injury. The aim of our study was identify the number of patients requiring surgery for hand and wrist lacerations and identify if these patients could be managed without the need for theatre.

We collected data in a prospective fashion from 1/9/9 to 3/11/9 at a large district general hospital. Over this period, 36 patients required surgery for their hand or wrist laceration. 27 were male and 9 were female. The average age was 34 years. The average length of procedure from was 21 minutes. 32% of patients were admitted overnight.

In two thirds of cases, the operating surgeon felt the procedure could have been performed in a suture room rather than in theatre. Among those patients who could've been operated on within a suture room, 21 would not have required an admission for any other reason.

It seems likely that the number of referrals from the ED regarding patients with upper limb lacerations is not likely to decrease. It is, therefore, important to ensure that orthopaedic departments develop new ways of working to try and ensure that patients are treated in a prompt fashion. We believe that the addition of a suture room to the orthopaedic trauma room remains one possible way of achieving this.


The Journal of Bone & Joint Surgery British Volume
Vol. 70-B, Issue 4 | Pages 659 - 662
1 Aug 1988
Hoyland J Freemont A Denton J Thomas A McMillan J Jayson M

We examined soft tissue biopsies from 26 patients with symptomatic nerve root fibrosis and arachnoiditis after a previous laminectomy. Dense fibrous connective tissue was found about the nerve roots and in 14 cases (55%) fibrillar foreign material was seen within it. This material had the histochemical characteristics of cotton fibres from swabs and neurosurgical patties. In two other cases nerve root fibrosis was associated with residual radiopaque lipid thought to derive from earlier myelography. Our findings suggest that risks may be associated with the introduction of foreign material into the vertebral canal, and that microscopic fragments of surgical swabs and patties may have a role in the pathogenesis of postoperative periradicular fibrosis.