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Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_14 | Pages 9 - 9
1 Jul 2016
Jawalkar H Aggarwal S Bilal A Oluwasegun A Tavakkolizadeh A Compson J
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Scaphoid fractures accounts for approximately 15% of all fractures of hand and wrist. Proximal pole fractures represent 10–20% of scaphoid fractures. Non –operative treatment shows high incidence of non-union and avascular necrosis. Surgical intervention with bone graft is associated with better outcome. The aim of this study was to evaluate the radiological and functional outcome of management of proximal pole scaphoid non-union with internal fixation and bone grafting.

We included 35 patients with proximal pole scaphoid non-union (2008–2015). All patients underwent antegrade headless compression screw fixation and bone grafting at King's College Hospital, London (except one, who was fixed with Kirschner wire). 33 patients had bone graft from distal radius and two from iliac crest. Postoperatively patients were treated in plaster for 6–8 weeks, followed by splinting for 4–6 weeks and hand physiotherapy. All the patients were analysed at the final follow-up using DASH score and x-rays.

Mean age of the patients was 28 years (20–61) in 32 men and 3 women. We lost three patients (9%) to follow up. At a mean follow up of 16 weeks (12–18) twenty three patients (66%) achieved radiological union. All patients but three (91%) achieved good functional outcome at mean follow up of 14 weeks (10–16).

A good functional outcome can be achieved with surgical fixation and bone graft in proximal pole scaphoid fractures non-union. Pre-operative fragmentation of proximal pole dictates type of fixation (screw or k wire or no fixation). There was no difference in outcome whether graft was harvested from distal radius or iliac crest.


Orthopaedic Proceedings
Vol. 97-B, Issue SUPP_10 | Pages 14 - 14
1 Oct 2015
Lakkol S Garg A Hachem M Tavakkolizadeh A
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Evidence suggests that there 17% rise in cycling related injuries in the last year. The objective of the study is to analyze the pattern of injuries in cyclists who were treated as a MTC. This is a retrospective study performed at a Tertiary Trauma Centre in central London. All cyclists who were admitted as MTC to hospital between January 2011 and August 2013 were included. Overall there were 518 patients who were treated as vehicle- related Major Trauma Cases, out of which 118 (23%) were cyclists. Of the 118 cyclists, 98 (83%) were male and 20 (17%) female. The mean Injury Severity Score was 19.2 ±11.1 (mean/SD). There were 58 (49%) patients who required ITU support. Major proportion of patients (68 patients – 61%) sustained neurological injuries. There were 2 (1.7%) deaths, both due to neurological injuries. In comparison to other group of vehicles there is less number of bicycles on the roads. Our results show that the proportion of cyclists involved in road traffic incidents is higher (23%) than other vehicles. Our results show that large proportions (61%) of cyclists sustain neurological injuries, reinforcing the previous evidence that safe protective head gear is vital for cyclists.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_13 | Pages 61 - 61
1 Mar 2013
Hachem M Hardwick T Pimple M Tavakkolizadeh A Sinha J
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Tightrope fixation is known method for reconstructing acromioclavicular joint and the presence of good bone stock around the two drillholes is the most important determining factor for preventing failure.

Aim

Arthroscopic-assisted tightrope stabilisation involve drilling clavicle and coracoids in a straight line. This leads to eccentric drillholes with inadequate bone around it. Open tightrope fixation involves drilling holes under direct vision, independently and leading to centric hole with adequate bone around it. Our study assesses the hypothesis of tightrope fixation in relation to location of drillholes using CT-scan and cadaveric models for arthroscopic and open technique for ACJ fixation.

Methods

CT-scans of 20 shoulders performed. Special software used to draw straight line from distal end of clavicle to coracoid. Bone volume around coracoid drillhole was calculated. Cadaveric shoulder specimens were dissected. The arthroscopic technique was performed under vision by drilling both clavicle and base of coracoid holes in one direction. Same specimens were used for open technique. Base of coracoid crossectioned and volume calculated.


Orthopaedic Proceedings
Vol. 95-B, Issue SUPP_1 | Pages 41 - 41
1 Jan 2013
Singh A Pimple M Tavakkolizadeh A Sinha J
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Hypothesis

Recurrent shoulder dislocation is associated with bony defect of the glenoid rim, commonly seen along with bankart tear - a soft tissue injury of glenoid labrum. This cadaveric study compares the bone block effect of coracoid transfer using using two common techniques, Classical Latarjet technique and the Congruent-Arc Latarjet. We hypothesized that the force needed to dislocate the shoulder would be greater in Congruent Arc technique than the Classical Latarjet, because of increased contact surface area as a result of greater linear dimensions.

Material and methods

We dissected 14 cadaveric shoulders. A bony Bankart lesion was created in form of an inverted pear glenoid. The humeral head was attached to a pulley system that was sequentially loaded until the shoulder dislocated anteriorly. The force needed to dislocate was noted. This was repeated after coracoid transfer with two common techniques, Classical Latarjet technique and the Congruent-Arc Latarjet.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_III | Pages 302 - 302
1 Jul 2011
Khokhar R Colegate-Stone T Tavakkolizadeh A Al-Yassari G Roslee C Compson J
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Aims: To assess the usefulness of wrist arthroscopy in the assessment of symptomatic scaphoid non-unions and associated injuries and to evaluate the implications on the definitive treatment.

Methods: A prospective cohort study of patients undergoing wrist arthroscopy with established scaphoid non-union was performed between January 2006 and April 2009. This study included 17 men and 6 women with a mean age of 39 years.

Results: Majority of the study population (61%) had normal radiocarpal articular cartilage. Articular cartilage wear was mostly limited to the radial styloid and could be effectively debrided. Injuries to the TFCC (39%) followed by the LT joint (35%) and the SL joint (26%) were the most common arthroscopic findings. Other identified pathologies included: Loose bodies, protruding Herbert screw from previous fixation, Chondrocalcinosis, Distal Radio-ulnar joint (DRUJ) instability, Capitohamate (CH) instability and Ulnar styloid fracture non-union. Assessment of the state of the fracture union was best done from the mid carpal joint rather than the radiocarpal joint due to a more prominent fibrocartilage covering of the fracture site from the radiocarpal side Concomitant procedures performed during the wrist arthroscopy included debridement of synovitis (48%) and TFCC repair (4%). Post wrist arthroscopy 6 patients (26%) required a further course of conservative treatment (Physiotherapy +/− local anaesthetic and steroid injection) prior to discharge. In the remaining patients, based upon clinical and arthroscopic findings, a range of other therapeutic and salvage procedures were performed.

Conclusion: This study demonstrates an important role for the wrist arthroscopy in patients with symptomatic scaphoid non-union and in assessing the true extent of the articular cartilage wear and associated carpal injuries. Further it helped in most cases with the decision making in choosing the appropriate definitive surgical option when required.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_II | Pages 164 - 164
1 May 2011
Ahmed M Tavakkolizadeh A Sinha J
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Introduction: Radial styloidectomy as procedure has gained recognition over the last 60 years since its initial description for scaphoid nonunions. It is a recognised procedure in the treatment of distal radioscaphoid joint arthritis on its own or as an adjunct to another carpal procedure. There has been a debate regarding the length of styloid osteotomy and the risk of instability due to the damage of volar ligaments.

Aim: We set out to evaluate the anatomical variation of the volar ligament attachments

Methods: We performed dissection of 22 wrists in 11 embalmed cadavers (7 females, 4 males). Using dorsal approach we dissected down to the wrist and then to the volar ligaments. Measurements were taken from the tip of the radial styloid to the insertion of the volar ligaments, using digital vernier callipers. Measurements were carried out by two assessors and intra-observer and inter-observer variations were not found to be significant.

Results: Average age was 86.8 years (range 81–94). The average length of the volar ligament was found to be 7.19mm (range 5.37–10.01). No significant side dependant variation in measure was found. Predictably volar ligament length in females was found slightly lower compared to males.

Conclusion: Based on a standard 3–4mm radial styloidectomy recommended we do not feel that there would be any compromise of the volar wrist ligaments.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_I | Pages 43 - 43
1 Jan 2011
Colegate-Stone T Roslee C Latif A Allom R Tavakkolizadeh A Sinha J
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We performed a prospective cohort study to investigate the comparability of subjective and objective assessment scores of shoulder function following surgery for rotator cuff pathology.

A consecutive series of 372 patients underwent surgery for rotator cuff disorders with post-operative follow up over 24 months. 248 patients only had subacromial decompression, whereas 124 patients had rotator cuff repair additionally (93 arthroscopic; 31 open). Assessments were made pre-operatively, and at 3, 6, 12, and 24 months post-operatively using the Disabilities of the Arm, Shoulder, and Hand (DASH) score; Oxford Shoulder Questionnaire (OSQ); and the Constant score, which was used as a reference. Standardisation calculations were performed to convert all scores into a 0 to 100 scale, with 100 representing a normal shoulder. The student’s t test was used to compare the mean score for each subjective tool (DASH and OSQ) with the objective score (Constant) at each time point. Pearson’s Correlation coefficient was used to analyse the changes with time post-operatively. The statistical tests were used for the individual surgery types as well as all surgeries collectively. The relationship between the DASH and the Constant score was strongly correlated in all types of surgery.

The relationship between the Oxford and Constant scores was similar, except in the open rotator cuff repair group. There was no statistical difference between the mean DASH and Constant scores for all interventions at any time point. A significant difference was seen between the mean Oxford and Constant scores for at least one time point in all but the open rotator cuff repair group.

We demonstrate that the DASH and Oxford scoring systems would be useful substitutes for the Constant score, eliminating the need for a trained investigator and specialist equipment required to perform the Constant score with the associated cost benefits.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_I | Pages 21 - 21
1 Jan 2011
Colegate-Stone T Roslee C Latif A Allom R Tavakkolizadeh A Sinha J
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We performed a prospective audit to investigate the comparability of subjective and objective assessment scores of shoulder function following surgery for rotator cuff pathology. A consecutive series of 372 patients underwent surgery for rotator cuff disorders with post-operative follow up over 24 months. 248 patients solely underwent subacromial decompression, whereas 124 had additional rotator cuff repair (93 arthroscopic; 31 open).

Assessments were made pre-operatively, and at 3, 6, 12, and 24 post-operative months using the Disabilities of the Arm, Shoulder, and Hand (DASH) score; Oxford Shoulder Questionnaire (OSQ); and the Constant score, which was used as a reference. Standardisation calculations were performed to convert all scores into a 0 to 100 scale, with 100 representing a normal shoulder. The student’s t-test was used to compare the mean score for each subjective tool (DASH and OSQ) with the objective score (Constant) at each time point. Correlation coefficients (Pearson’s) were used to analyse the changes with time (post-operative course). Each statistical test was used for all surgeries collectively and for the individual surgery types.

The relationship between the DASH and the Constant score was robust in all types of surgery. The relationship between the Oxford and Constant was generally robust, except in the open rotator cuff group. There was no statistical difference between the mean DASH and Constant scores for all interventions at each time point. A significant difference was seen between the mean Oxford and Constant scores for at least one time point in all but the open rotator cuff repair group.

We demonstrate the DASH and Oxford scoring systems would be useful substitutes for the Constant score, obviating the need for the trained investigator and specialist equipment required to perform the Constant score, alongside the associated cost benefits. Further it provides evidence of service, aids appraisal and revalidation.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_I | Pages 59 - 59
1 Jan 2011
Khokhar R Latif A Arya A Tavakkolizadeh A Compson J
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We describe a new technique for fixing the proximal pole scaphoid fractures both in acute and chronic setting and present our preliminary results.

We prospectively studied fixation of 25 proximal pole scaphoid fractures (1 acute displaced and 24 non unions) with this technique between 1999 and 2007. Mean age of patients was 25 years and mean time to the operation was 6 months.

The technique involves making a transverse dorsal incision over the radius along the radio-carpal junction. The retinaculum is split in line with its fibres. Access to the radio-carpal joint is achieved through the third extensor compartment. The ligament attachment to the scaphoid is preserved by using a modified Mayo approach. A window is created initially at the proximal end of the dorsal ridge. The fracture is reduced and stabilised with an appropriate length Herbert screw. The fracture site is curetted through this window and cancellous bone graft from the distal radius is packed into the fracture site. The capsule and extensor retinaculum is then closed in layers.

Radiological union was achieved in 23 cases, one case required refixation and one case was lost to follow up. Our technique is tendon sparing, capsule retaining, and ensures maintenance of articular surface congruity. So far this technique has led to excellent results.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_I | Pages 15 - 15
1 Jan 2011
Rajaratnam S Jack C Tavakkolizadeh A George M Fletcher R Hankins M Shepperd J
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The medium term results of the JRI Furlong Total hip replacement have been very impressive to date. We report the longest prospective series to date of a hydroxyapatite coated femoral prosthesis (Joint Replacement Instrumentation limited, London, UK) at 15–21 years follow up. We describe the long term clinical and radiological femoral stem survival of 331 consecutive JRI Furlong Hydroxyapatite coated total hip replacements in 291 patients at an average follow-up of 17.5 years (15 – 21 year). Two patients (0.6%) were lost to follow-up over the 21 years of the study period. Using revision of the femoral stem for any reason as an endpoint, we report a stem survival of 97.4 % (81.0 to 99.5). Using Aseptic loosening as an endpoint, stem survival was 100%.

The average Merle, D’Aubine & Postel scores recorded for the patients was 5.63/6 for Pain, 5.42/6 for mobility and 4.50/6 for function. There were no cases of anterior thigh pain relating to the uncemented femoral stem.

These results compare favourably with the best long term survival of cemented or uncemented femoral stems used in total hip replacements.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_I | Pages 48 - 48
1 Jan 2011
Davies H Janes G Zhaeentan S Tavakkolizadeh A
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Lateral sided hip pain frequently presents to the orthopaedic clinic. The most frequent cause of this pain is trochanteric bursitis. This usually improves with conservative treatment. In a few cases it doesn’t settle and warrants further investigation and treatment. Between July 2006 and February 2008, 28 patients underwent MRI scanning for such pain, 16 were found to have a tear of their abductors. All 16 underwent surgical repair using multiple soft tissue anchors inserted into the greater trochanter of the hip to reattach the abductors.

There were 15 females and 1 male. They had a mean age of 62. All patients completed a self-administered questionnaire pre-operatively and 1 year postoperatively. Data collected included: A visual analogue score for hip pain, Charnley modification of the Merle D’Aubigne and Postel hip score, Oxford hip score, Kuhfuss score of Trendelenburg and SF36 scores.

Of the 16 patients who underwent surgery 5 had a failure of surgical treatment. There were 4 re ruptures, 3 of which were revised and 1 deep infection which required debridement. In the remaining 11 patients there were statistically significant (p< 0.05) improvements in hip symptoms. The mean change in visual analogue score was 5 out of 10. The mean change of Oxford hip score was 20.5. The mean improvement in SF-36 PCS was 8.5 and MCS 13.7. 6 patients who had a Trendelenberg gait pre-surgery had normal gait 1 year following surgery.

We conclude that hip abductor mechanism tear is a frequent cause of recalcitrant trochanteric pain that should be further investigated with MRI scanning. Surgical repair is a successful operation for reduction of pain and improvement of function. However there is a relatively high failure rate.


Orthopaedic Proceedings
Vol. 92-B, Issue SUPP_IV | Pages 574 - 574
1 Oct 2010
Roslee C Allom R Arya A Colegate-Stone T Khokhar R Latif A Sinha J Tavakkolizadeh A
Full Access

Introduction: We performed a prospective cohort study to investigate the comparability of subjective and objective assessment scores of shoulder function following surgery for rotator cuff pathology.

Materials and Methods: A consecutive series of 372 patients underwent surgery for rotator cuff disorders with post-operative follow up over 24 months. 248 patients solely underwent subacromial decompression, whereas 124 had additional rotator cuff repair (93 arthroscopic; 31 open). Assessments were made pre-operatively, and at 3, 6, 12, and 24 post-operative months using the Disabilities of the Arm, Shoulder, and Hand (DASH) score; Oxford Shoulder Questionnaire (OSQ); and the Constant score, which was used as a reference. Standardisation calculations were performed to convert all scores into a 0 to 100 scale, with 100 representing a normal shoulder. The student’s t test was used to compare the mean score for each subjective tool (DASH and OSQ) with the objective score (Constant) at each time point. Correlation coefficients (Pearson’s) were used to analyse the changes with time (post-operative course). Each statistical test was used for all surgeries collectively and for the individual surgery types.

Results: The relationship between the DASH and the Constant score was robust in all types of surgery. The relationship between the Oxford and Constant was generally robust, except in the open rotator cuff group. There was no statistical difference between the mean DASH and Constant scores for all interventions at each time point. A significant difference was seen between the mean Oxford and Constant scores for at least one time point in all but the open rotator cuff repair group.

Conclusion: We demonstrate the DASH and Oxford scoring systems would be useful substitutes for the Constant score, obviating the need for the trained investigator and specialist equipment required to perform the Constant score, alongside the associated cost benefits.


Orthopaedic Proceedings
Vol. 90-B, Issue SUPP_III | Pages 454 - 454
1 Aug 2008
Fletcher RJ O’Brien A Oliver MC Rajaratnam S Southgate C Tavakkolizadeh A Shepperd JAN
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We report a consecutive series of 200 patients who underwent Dynesys flexible stabilisation in the management of intractable lower back pain.

Methods: Patients were only accepted for the study if exhaustive conservative management had failed. They underwent operation between September 2000 and March 2003. Patients were divided into two groups:

Group 1 - Cases where implantation was used as an adjunct to other procedures including decompression, discectomy, or posterior lumbar interbody fusion. (32 male, 36 female, Mean age 56years (range 31–85)).

Group 2 - Patients with back pain and/or sciatica in which no other procedure was used. (65 male 67 female, Mean age 58years (range 27–86))

All patients were profiled prospectively using the Oswestry Disability Index (ODI), SF36 and Visual Analogue Scale (VAS). Patients were reviewed post-operatively using the same measures at 3, 6 & 12 months, and yearly thereafter. Follow-up was 95% at 2 to 5 years.

Results: Group 1 – Mean ODI fell from 54 pre-op to 24 at four years

Group 2 – Mean ODI fell from 49 pre-op to 28 at four years

Similar trends were observed in both groups with a fall in VAS and improvement in SF36.

Discussion: Indications can only be defined following clinical outcome. Perceived indications were based on contemporary understanding of the biomechanical effects of the construct. Further investigation of these variables is clearly desirable. Screw failures (15%) have detracted from the overall success. The virtue of flexible stabilisation over fusion includes avoidance of domino effect, reversibility and possible healing of a painful segment. The key issue is whether it is as effective and this requires prospective randomised controlled investigation, both against fusion, and conservative management. We feel our results in this difficult group of patients are reasonable and continue to use it in our practice.


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_III | Pages 457 - 457
1 Oct 2006
Fletcher R Southgate C Rajaratnam S Shepperd J O’Brien A Tavakkolizadeh A Oliver M
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Introduction Dynesys flexible stabilisation was developed by Giles Dubois in 1992, and first used in 1994 (1). Our unit has undertaken 375 operations to date. We report a consecutive series of 200 patients who underwent Dynesys flexible stabilisation in the management of intractable lower back pain.

Methods Access to our spinal service is exclusively from a back assessment centre run by a triaging nurse practitioner who works closely with the senior author. Conservative treatment is arranged by the centre, and includes physiotherapy to the point of failure. Patients were only accepted for the study if exhaustive conservative management had failed. They underwent operation by the senior author between September 2000 and March 2003. Patients were divided into two groups: Group 1 – Cases where implantation was used as an adjunct to other procedures including decompression, discectomy, or posterior lumbar interbody fusion. (32 male, 36 female, Mean age 56years (range 31–85)) Group 2 – Patients with back pain and/or sciatica in which no other procedure was used. (65 male 67 female, Mean age 58years (range 27–86)) All patients were profiled prospectively using the Oswestry Disability Index (ODI), SF36 and Visual Analogue Scale (VAS). Patients were reviewed post-operatively using the same measures at 3, 6 and 12 months, and yearly thereafter. Follow-up was 95% at 2 to 5 years.

Results Group 1 – Mean ODI fell from 54 pre-op to 24 at four years. Mean SF36 improved from 43 pre-op to 56 at four years Group 2 – Mean ODI fell from 49 pre-op to 28 at four years. Mean SF36 improved from 40 pre-op to 62 at four years. Similar trends were observed in both groups at five years with these favourable scores tending back towards pre-operative levels. Screw failures, either loosening or fracture, occurred at a rate of 15% over the follow-up period.

Discussion Our results support the use of flexible stabilisation as an alternative to spinal fusion. There is currently no consensus on absolute indications for the procedure however. Such indications can only be defined following clinical outcome. Perceived indications were based on contemporary understanding of the biomechanical effects of the construct. Further investigation of these variables is clearly desirable. Screw failures (15%) have detracted from the overall success, although the relationship between such failures and poor outcomes is complex and difficult to elucidate at the current time. The virtue of flexible stabilisation over fusion includes avoidance of domino effect, reversibility and possible healing of a painful segment. The key issue is whether flexible stabilisation is as effective and this requires prospective randomised controlled investigation, both against fusion, and against conservative management. We feel our results in this difficult group of patients are reasonable and continue to use it in our practice.


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_II | Pages 221 - 221
1 May 2006
O’Brien A Southgate C Oliver M Tavakkolizadeh A Selmon G Shepperd J
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We report a consecutive series of 352 patients with back pain treated by Dynesys flexible stabilisation between July 2000 and November 2004, to include perceived indications, surgical techniques and complications. A detailed analysis of the first 120 cases with minimum follow up of 2 years is included. Our unit has undertaken 352 operations to date, and this communication reports all cases. Follow up is to 48 months.

All patients were profiled prospectively using the Oswestry Disability Index, Euroquol, SF36, Pain analogue scale, Pain chart and modified Zung. The same measuring instruments were used at review for which follow up was 100%

The procedure involves paired bilateral pedicle screw instrumentation above and below the level of perceived pathology, with each screw pair connected by load relieving carbopolyurethane flexible spacers, in conjunction with a tension band polyethylene cord passed through the spacer. This construct is then held under tension with screws in the main pedicle screws.

All patients are profiled at entry to the hospital service using a proforma which includes the measures outlined above. Conservative treatment is arranged by the centre, and includes physiotherapy to the point of failure. All our cases have failed conservative treatment before enrolling for surgery.

There was significant improvement in symptoms for most of the patients in the series. However clear patterns emerged as to those cases in which Dynesys is contra-indicated.

This is the largest series of cases reviewed so far in the literature.


Orthopaedic Proceedings
Vol. 87-B, Issue SUPP_III | Pages 371 - 371
1 Sep 2005
Tavakkolizadeh A Klinke M Davies M
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Background Tibiotalocalcaneal (TTC) arthrodesis is a salvage procedure for patients with severe disease of the ankle and subtalar joints.

Method We report a series of 26 consecutive patients (26 feet) operated on by a single surgeon, in a single centre, over a 4-year period, with average follow up of 26 months (range 6–50). Mean age of the patients was 57 years (range 28–72). Subjects included 17 male and 9 females. Previously the patients had undergone between 0 to 6 operations, which were unsuccessful. All these patients had combined ankle and subtalar joint arthrodesis by an intramedullary nail device. Indications for surgery were pain except the Charcot joints. Only five patients did not have severe deformity pre-operatively. Aetiology included post-traumatic osteoarthritis, rheumatoid arthritis, psoriatic arthropathy, avascular necrosis, Charcot Marie Tooth disease, primary osteoarthritis, failed ankle replacement and alcohol-and diabetic-induced Charcot neuroarthropathy. Patients were assessed radiologically and by American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Scale, SF-12 and by patient satisfaction scores.

Results Clinically and radiologically, 15 cases have solid union. Six patients have signs of radiological non-union/ delayed union but are clinically asymptomatic with no progressive deformity. Two patients required amputation (one non-union and one infected non-union). One patient is awaiting further surgery for infected non-union. Two patients have died of unrelated causes ~2 years post-surgery. Most patients (79%) are very satisfied with the procedure and 83% would undergo the procedure again.

Conclusion These results suggest that salvage is possible in the majority of cases with combined ankle and subtalar joint arthrosis and severe deformity.


Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_II | Pages 169 - 169
1 Feb 2003
Tavakkolizadeh A Anand P Birch R
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We describe seven cases of permanent neurological damage following interscalene block used in post-operative analgesia after operations at the shoulder. MRI, Nerve Conduction Studies and Quantitative assessments of function confirmed that in all there was infarction of the anterior spinal cord, resulting in a spinothalamic and corticospinal tract defect especially at segments C7, C8 and T1. We think that these lesions were caused by injury to radicular arteries. Domisse has demonstrated the anatomy of the radicular vessels joining the anterior spinal artery to supply the anterior two thirds of the cord. They are branches of the vertebral, ascending cervical and deep cervical arteries which pass through the inter-vertebral foramina with the C7, C8 and T1 roots predominantly. Chakravorty has shown that radicular vessels contribute to the blood supply of the lower cervical cord. Injury to them can cause ischaemia, leading to Anterior Spinal Artery Syndrome. We suggest tamponade of the radicular vessels by infusion of fluid under pressure deep to the prevertebral fascia as the main mechanism but neurotoxicity and vasospasm can be other possible explanations.

In a second group there was an additional interference with the vertebral artery presenting with transient bulbar and cranial nerve symptoms. We had 2 patients with such combined lesions. Complications of interscalene blocks are well documented but most are reversible and transient. In our cases the damage has been permanent and disabling. The innervation of the gleno-humeral joint is largely through the 4th, 5th and 6th cervical nerves and we suggest more appropriate placing of the blockade should be adapted and use of this technique for post-operative analgesia should be abandoned.


Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_II | Pages 161 - 161
1 Feb 2003
Tavakkolizadeh A Taggart M Birch R
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We reviewed 1060 cases of OBPP prospectively at the Peripheral Nerve Injury Unit over 20 years. Data was collected for birth weight, maternal age, maternal height, maternal weight, duration of labour and associated difficulties, presentation, mode of delivery, neonatal problems, birth rank, race and social class.

The mean birth weight was 4.23 kg (Range 0.63–9.49 SD 0.72) compared to 3.47 Kg nationally [p < 0.05]. There was an association between severity of lesion and increase in birth weight.

Maternal age was 29.0 years in OBPP group [Range 14–43 SD 5.4] compared to 26.8 nationally [p < 0.05]. In 46.7% of the brachial plexus group, the mothers were > 30 years old. This was compared to 29.7% nationally.

The difference in maternal Body Mass Index (BMI) between patient group [27 with Range 14–44 SD 3.5] and national average of 25 was significant [p< 0.05]

Hypertension [11.8%] and diabetes [11.2%] were significantly [p< 0.05] higher than the national rate [6.4% and 1% respectively].

Shoulder dystocia occurred in 56% of the cases and was strongly associated with OBPP [p< 0.05].

Mean duration of labour nationally was 5.4 hours; in the patient group 10.8 hours [p< 0.05]

Breech presentation was more than three times the national average [p< 0.05]

Caesarean sections [2%] were less than national average [18%].

Instrumental deliveries [40.3%] were four times more than national rate. [P < 0.05]

The incidence of Neonatal asphyxia [22%] and Special Care Baby Unit [15.3%] was significantly [p< 0.05] higher than the national average [2% and 8% respectively]

Other factors did not prove to be statistically significant. These included; Social class, birth rank and ethnic origin.

We found that Birth weight, shoulder dystocia and body mass index are the most significant risk factors for obstetric brachial plexus plasy.