Background

Various studies have highlighted issues regarding the prevalence of back pain due to lead apron use. The health and safety executive guidelines on personal protection equipment state that an employee should be able to carry the weight of a lead apron without injury (HSE, 2017). It has been suggested that wearing a 15 pound lead apron can place pressures of up to 300 pounds per square inch of the intervertebral discs (Khalil, 1993), ‘interventionalist's disc disease’ has been identified as a confirmed entity (Ross et al. 1997).

Much debate exists over the value of exercise therapy for treating adolescent idiopathic scoliosis (AIS). This study aims to address the current evidence. An extensive search was carried out using the common medical databases, limiting results to clinical trials in English involving humans with defined outcome measures. 155 papers were identified and after applying strict inclusion criteria 12 papers remained for further analysis. These included 9 prospective cohort trials, 2 retrospective cohort trials and one case series. No randomised controlled trials were identified. Although all of the papers concluded an improvement in scoliotic curve after exercise therapy, not one of the papers had reliable methods or results to validate their conclusions. Identified shortcomings included, poor compliance with outpatient exercise regimes with no clear indication of who assessed for curve improvement, how it was assessed or what experience they had, nor was observer error for Cobb angle measurement taken into account. Additionally only a few of the studies had sound statistical analysis and no study could comment on whether the improvements seen were maintained after the exercise regime. Four previous systematic reviews have been performed finding favourable results for exercise therapy, but these were written by authors involved in the original research, adding significant reviewer bias. This systematic review has revealed only poor and low level evidence supporting the use of exercise therapy for treating AIS. Well designed controlled trials with randomisation are required to validate exercise therapy as an effective treatment option and as an appropriate use of NHS funds.

Compare the prevalence of psychological distress in claustrophobic patients compared with a non-affected group, together with determination of presenting disability and overall intervention rates.

Retrospective case notes review.

33 patients (13 males) all requiring MRI scan under sedation for claustrophobia (Group 1) were compared with an age and sex matched cohort that had MRI without sedation (Group 2). Both groups were drawn from the same chronic back clinic. Average age in both groups was 54 years (range 27-79 years). Both groups had standard conservative therapy, together with psychometric evaluation.

Primary: Zung Depression Index (ZDI), Modified Somatic Perception Questionnaire (MSPQ). Secondary: Oswestry Disability Index (ODI), intervention rates (surgery, injections and physiotherapy sessions)

Comparison of means -

22 patients (66.7%) in Group 1 were discharged after their MRI with no intervention compared to 7 patients (21.2%) in Group 2.

Claustrophobic patients with back pain showed higher levels of depression than non-claustrophobic patients, with a greater prevalence of psychological distress. Disability however was the same. The majority of claustrophobic patients had no intervention, with a lower rate than their non-claustrophobic peers. Claustrophobia is a proxy for psychological distress and should be considered in the overall evaluation of chronic back patients.

8 patients with cervical myelopathy treated by French-door laminoplasty and internal fixation. A novel technique of fixation is employed to provide immediate stability, pain relief and rapid mobilisation.

To report the clinical and radiological outcomes of this new fixation device for French–door laminoplasty with minimum follow-up of 30 months.

Hardware assisted laminoplasty has the potential advantage of instant stability and prevention of recurring stenosis. The use of titanium mini-plates has been described in open-door laminoplasty and now we describe this technique in French–door laminoplasty.

8 patients with cervical myelopathy secondary to congenital stenosis (2) and multi-level spondylotic myelopathy (6) underwent 2-4 level French–door laminoplasty and mini-plate fixation. The average follow-up was 46.5 months. Autogenous iliac crest bone graft was interposed between the sagittally split spinous processes and 16-18 holed titanium mini-plates were contoured into a trapezoidal shape and secured to the posterior elements with screws. Patients then mobilised without external support.

The mean follow-up was 46.5 months. The mean improvement in NDI at final follow-up was 35% and mean improvement in VAS was 4 points. JOA score improved from a mean of 10 to a mean of 14.8 post-operatively. All patients had achieved a significant neurological improvement and pain relief. There were no post-operative hardware related complications, pseudarthrosis or neurological deterioration.

French-door laminoplasty is an excellent alternative to laminectomy for treatment of young patients with cervical myelopathy. The use of titanium mini-plates not only provides instant stability and pain relief but also seems to minimize the risk of C5 nerve root palsy. Internal fixation appears to provide instant stability, early mobilisation and therefore reduces hospital stay and associated costs.

Aims

To assess the accuracy of posterior and anterolateral methods of injection into the subacromial space (SAS) of the shoulder.

Introduction: Spinous process osteotomy (SPO) and multiple laminotomy can be used for multi-level lumbar decompression. We conducted an experimental study to compare the effects of these two methods on spinal kinetics.

Method: Ten fresh calf spines (L2- sacrum) were mounted in dental stone and segmental motion of L3 relative to L5 was assessed using an electromagnetic 3-D motion detection system (FASTRAK, Polhemus, Colchester, VT, USA). Pure moments of 0, 2.5, 5, 7, and 10 Nm were used in flexion/extension, right/left lateral bending, and right/left axial rotation. The moments were generated by applying two equal and opposite forces (weights) to the perimeter of a plastic circular disc, which was fixed to the superior end plate of L3 by three screws. In five spines decompression was performed at L3/4 and 4/5 using standard laminotomy technique. Decompression using SPO was done at L3–5 through a unilateral approach in the rest. Segmental mobility between the two methods was compared using the Mann-Whitney test.

Results: Mean range of motion in the specimens before intervention was-lateral bending (32.70 ± 7.6 SD), rotation (13.10 ± 4.8 SD), flexion/extension (19.30 ± 7.1 SD). There was statistically significant difference between mean increase in lateral bending after SPO to that following laminotomy (4.00 ± 1.5 SD vs 0.60 ± 1.6 SD; p=0.008). Mean increase in flexion- extension after SPO was not significantly different from that after laminotomy (4.50 ± 1.1 SD vs 3.90 ± 3.8 SD; p= 0.75). There was no difference in the mean increase in axial rotation after SPO compared to that following laminotomy (7.90 ± 3.6 SD vs 6.80 ± 5.0 SD; p= 0.75).

Conclusions: Both laminotomy and SPO produced increased range of motion in a calf spine model. SPO produced significant increase in lateral bending although its clinical significance is unknown.

Ethics approval: none

Interest Statement: Local grant (Research Fund, Centre for Spinal Studies, Robert Jones and Agnes Hunt Hospital, UK

Introduction: Capasso’s method(CM) has been described in orthopaedic textbooks to be the most sensitive tool for measuring Cobb angle in scoliosis. This method based on “bi-univocal principle” views the scoliosis curve to be an arc of circumference, to be a true reflection of angular values and hence geometrically more valid. However there is no comparative study between the established measurement tools i.e. Oxford cobbometer(OC) & Traditional protractor(TP) vs. CM. Our objectives were to to evaluate the sensitivity of CM against OC & TP in scoliosis and to determine intra & inter-observer reliability of the three methods.

Methods: Three independent blinded observers measured 24 digital AP radiographs of scoliosis on three separate occasions one week apart by CM, OC & TP. The three sets of readings obtained were statistically analysed for intra-observer (Cronbach’s alpha) & inter-observer [Inter-class correlation coefficient(ICC)] reliability.

Results: The mean Cobb angle measured by OC was 42.4(r13-91), by TP was 45.1(r16-89) and by CM was 70.4(r 20-148). The cronbach’s was 0.94 for OC, 0.91 for TP & 0.88 for CM. The ICC was 0.96 for OC, 0.90 for TP & 0.71 for CM. The measurements obtained by CM were higher than the other two methods for all magnitudes of the curves.

Conclusion: CM based on sound geometric principles is perceived to be superior to Cobb angle and has reasonable correlation(Pearson’s®=0.74) with it. However CM overestimates the magnitude of scoliosis as compared to other standard measurement tools. Management decisions based on CM would be inappropriate by current guidelines.

Ethics approval: Not applicable Interest Statement: None

Purpose: To review the existing practice of coding in spinal surgery and ascertain its accuracy for surgical procedures, co-morbidities and complications.

Methods: A retrospective review of 70 cervical and 100 lumbar consecutive spinal surgeries performed since April 2006 was conducted. The clinical coding data and hospital notes were reviewed.

Results: Coding data of 5 cervical spine surgeries were not available. Of the 165 cases, the accuracy of primary procedural codes was 93.9% (90.8% cervical & 96% lumbar). This reduced to 77.6% (75.4% cervical & 79% lumbar) when the accuracy for entire description of performed surgery was considered. Medical co-morbidities were coded appropriately in 64.2% of the patients (55% cervical & 70% lumbar). The procedural codes did not specifically reflect the surgery performed and lacked reproducibility. Surgical levels were coded incorrectly in 9% of the cases. Cervical surgeries were coded as lumbar in 4 and posterior surgery as anterior in 3 cases respectively. The commonly missed co-morbidities were drug allergies, hypercholesterolemia, smoking and alcoholism. Post-op adverse events were coded in 75% of the cases (16/20 cervical & 5/8 lumbar). The accuracy was better for lumbar as compared to cervical spinal surgeries.

Conclusion: Coding is a universal language of communication and its accuracy is important not just for PbR, but for data quality, audit and research purposes too. The financial implications regarding PbR governed by HRG codes (dictated by OPCS 4.4 & ICD–10 codes) are discussed. Following this study, a clinical coding facilitation form has been introduced to improve data quality.

Ethics approval: None

Interest statement: None

Purpose: There is no consensus regarding indications for anterior release and causative factors of junction kyphosis(JK) in Scheuermann’s Kyphosis(SK).

Methods: A retrospective review of 35 patients(19♂; 16♀) who underwent surgery for SK with a minimum follow-up of 5 years was undertaken. The mean age & follow-up were 20.5(13.25–45.75y) and 9 years(5–22y) respectively. Patient demographics, clinicoradiological parameters & functional outcomes (ODI/SRS-22) were assessed. The incidence of JK was correlated with radiographic parameters & instrumentation levels. Outcomes of posterior instrumentation(GroupI-13) were compared with anterior release & posterior instrumentation(GroupII-22).

Results: Cobb Λle of ≥600 hyperextension radiographs and presence of anterior bony bridge required anterior release. JK(≥100) was seen in 12 cases (7 proximal & 5 distal). PJK was seen in cases where T3-4 was the upper instrumented vertebra(UIV). DJK was seen in patients with body mass index(BMI) of ≥30 and when LIV did not include 1st lordotic disc. There was significant difference in mean thoracic kyphosis(TK) correction between the 2 groups (35.70vs44.50;p=0.003). The mean loss of correction at 9 yrs was 5.90 and 3.40 respectively. 33/35 were subjectively satisfied with cosmesis and 28/35 patients returned to their previous occupation. Three were off work due to chronic back pain and four patients had job modifications.

Conclusion: Stiff curves require anterior release. PJK could be overcome by including T2 as UIV.

DJK could be prevented by including 1st lordotic disc in LIV. Extending lower Instrumentation to L3 would reduce the risk of implant failure in obese patients. There was no advantage of cages over rib grafts.

Ethics approval: Not applicable

Interest Statement: None (No grants obtained from any agency)

Introduction: We have compared the results of pedicle screw (PS) construct only with a hybrid sublaminar wire and pedicle screw construct (HS) in a matched cohort of CP patients, to establish which technique is superior in view of deformity correction and its maintenance.

Methods: 22 male and 14 female CP patients with average age of 16 years (range 8–25 years) underwent surgical correction for spinal deformity. Indications for surgery included loss of sitting balance, progression of spinal deformity, pelvic obliquity and back pain. Group 1 (18 patients) had PS construct only and Group 2 (18 patients) had HS constructs. 32 patients (90%) required sacral fixation. 5 patients in Group 2 required anterior release. All patients had a minimum follow-up of 2 years (range 2–13 years). Clinical and radiographic analyses were performed in both groups.

Results: Mean Cobb angle in Group 1 improved from 650 (range 120–950) to 18.50 (range 0–280) and in Group 2 from 77.60 (range 400–1050) to 34.80 (range 100–620) [p < 0.05]. Mean pelvic obliquity in Group 1 improved from 14.30 (range 00–420) to 2.50 (range 00–50) and in Group 2 from 24.70 (100–510) to 9.70 (range 20–180) [p< 0.05]. Mean surgical time in Group 1 was 224 minutes as compared to 260 minutes in Group 2 [P< 0.05]. 6 patients in Group 2 had proximal junctional kyphosis and implant failure requiring revision. One patient in each group had infection treated with antibiotic therapy.

Conclusions: PS fixation in CP patients, allowed significant correction of large curves without anterior release, eliminated proximal junctional kyphosis and instrumentation failure. Correction of pelvic obliquity was also superior due to three-dimensional corrective force of pedicle screws. Although PS fixation is expensive and technically demanding, it outweighs the costs incurred by two-stage surgery because of its superior durability correction.

Introduction: Correction of lumbar spine deformity in ankylosing spondylitis (AS) can be achieved by pedicle subtraction osteotomy (PSO), polysegmental osteotomy (PO) or Smith-Petersen osteotomy (SPO). We report our results with these three techniques.

Methods: 26 males and 5 females with AS and average age of 54.7 years (range 40–74 years) underwent surgery for loss of sagittal balance, horizontal gaze and back pain. 12 patients underwent PSO, 10 SPO, and 9 PO. Osteotomy was carried out at L3 in PSO and SPO with pedicle fixation from T11 to S1. 9 patients with PO had osteotomy from L2–5 and fixation from T10-S1. Sagittal translation during corrective manoeuvre was controlled in 21 patients by application of temporary malleable rods, which were substituted with permanent rods. TLSO was used post-operatively for average period of three months. Mean follow-up was 4.2 years (range 1–9 years). Radiographic and clinical outcomes (ODI, VAS, SRS-22) were analysed.

Results: Mean kyphotic correction in PSO was 380 (range 250–490), in PO was 300 (range 280–400) and in SPO was 280 (range 240–380). The sacrohorizontal angle improved by 190(range 50–300) in PSO, 210 (range 80–280) in PO and 150 (range 50–180) in SPO. Outcome scores were better in PSO and PO as compared to SPO. Blood loss and transient nerve root palsy was slightly higher in PSO group. One patient with SPO had fatal bleeding as a result of aortic injury.

Conclusions: Regular use of temporary malleable rods is recommended to prevent sagittal translation during correction reducing the risk of neurological injury. Better correction of deformity was achieved with PSO and PO at the expense of increased blood loss. SPO can increase the risk of vascular injury, therefore we recommend PSO and PO for correction of deformity in Ankylosing Spondylitis.

Introduction: Historically segmental sublaminar wiring (SLW) fixation has been used for the correction of spinal deformity in neuromuscular scoliosis, however pedicle screw (PS) fixation is gaining popularity. We compared the results of both techniques in patients with Duchenne Muscular Dystrophy (DMD).

Methods: Two groups of patients with DMD were matched according to the age at surgery, magnitude of deformity and vital capacity. Indications for surgery included loss of sitting balance, rapid decline of vital capacity and curve progression. In Group 1 (22 patients) SLW fixation was used from T2 to S1 with the Galveston technique. In Group 2 (18 patients) PS fixation was used from T2 to L5. Minimum follow-up was 2 years (range 2–13 years). Radiographs, SRS-22 and lung function tests were performed at standardised intervals.

Results: Mean Cobb angle in Group 1 improved from 47° (range 26°–75°) to 23.5° (range10°–36°) and mean pelvic obliquity improved from 15° (range8°–25°) to 2.4° (range0°–8°). Mean Cobb angle in Group 2 improved from 46° (range28°–82°) to 8.5° (range 0°–18°) and mean pelvic obliquity improved from 15° (range7°–30°) to 1.1° (range 0°–6°) [p< 0.05]. Mean operating time and blood loss were less in Group 2 [p< 0.05]. In Group 1, the infection rate and instrumentation failure was higher, and SRS-22 outcomes showed no significant difference between the groups. Interestingly the mean Body Mass Index (BMI) in Group 2 was much higher than group 1.

Conclusions: PS fixation resulted in superior correction and controlled pelvic obliquity to a large extent without the need for pelvic fixation. Lower rates of infection and failure of instrumentation were noted with PS fixation, despite high BMI of patients presumably due to steroid therapy. We recommend the use of PS instrumentation for the correction of spinal deformity in DMD.

Introduction: Ronald McRae’s textbook clinical orthopaedic examination mentions “Capasso’s method1 of evaluation of coronal plane deformity to be the most sensitive tool of measuring cobb angle. However there is no study to date evaluating/comparing this method against popular & widely used tools viz. cobbometer and traditional protractor.

Objectives: To evaluate Capasso’s method against commonly used measurement aids w.r.t measurement of cobb angle in scoliosis.

Summary of background data: Studies of Cobb method of measurement have multiple sources of error and intra & inter-observer variability. The Capasso’s method which is based on “bi-uni-vocal principle” views the scoliosis curve to be an arc of circumference and to be a true reflection of angular values and hence geometrically more valid.

Methods: 24 scoliosis curves were measured by three different examiners on three separate occasions one week apart by 1) Capasso’s method 2) Cobbometer and 3) Traditional protractor on same set of hard copies of digital x-rays. The three set of Cobb angle readings obtained were statistically analysed for intra & inter-observer reliability and assessed for agreement between the three methods of clinical measurement.

Results: The mean intra observer variability for protractor, cobbometer & Capasso’s methods were 8.50, 5.50 10.00 respectively. The cobb angle readings obtained by Capas-so’s method was higher than the other two methods for all magnitudes of the curves (< 300, 300–600 & > 600) and was more than two times the conventional readings for curves < 300. The disagreement between Capasso’s method with either of the other two methods (cobbometer & protractor) was statistically significant (p< 0.01).

Discussion: This study demonstrates that Capasso’s method significantly overestimates the magnitude of scoliotic deformity esp. for curves < 300 as compared to other existing popular measurement tools. Surgical decision making if were to be based on it would invite criticism and wrath. The present existing methods have their own limitations and the need of the day is a simple three dimensional measuring system to accurately define the magnitude of the deformity.

Introduction: The literature regarding the functional outcome following C1–C2 surgeries for non-rheumatoid C1–C2 pathologies following selective arthrodesis is sparse.

Aim: To determine the long term correlation between functional outcome and radiological determinants following C1–C2 fusion for conditions other than RA.

Methods: All C1–C2 surgeris performed between 1988–2002 for non-RA etiologies were reviewed retrospectively. Selective C1–C2 fusion performed in 32 pts with a min f/u of 5 yrs formed the study group. The mean age at surgery was 57.2 yrs (r 22–84yrs). The etiologies were trauma (15), non-union (6), congenital AAD (2), C1–C2 deg. arthropathy (2), os odontoideum (2), tumours (4) and instability due to TB (1). Neurodeficit were present in 7 pts. Transarticular (TA) screws supplemented with posterior wiring was performed in 27 & posterior wiring alone in 5 pts respectively. A monocortical H-shaped autograft from iliac crest was used in all cases. There were two deaths & two pts were lost for F/U. The mean F/U was 7.8 yrs (r 5–13 yrs). Disability & pain using NDI & VAS and subjective satisfaction were recorded in all pts. We measured 1) C1/2 fixation angle, 2) Inclination of C1, 3) Anterior shift of C2 and 4) C2–7 lordosis on pre and final F/U lateral x-rays.

Results: Optimal TA screw placement was seen in 78.5% of pts. The mean improvement in NDI & VAS were from 55.4% to 19.6% and 8.4 to 1.6 respectively and was better in younger pts. Fusion was seen radiologically in 82.1% of pts at 12 mo post surgery. Segmental stability and resolution of symptoms was seen in all patients despite implant failure in 4 and incomplete fusion 5 cases respectively. Two wound dehiscences needed debridement of which one elderly pt died of MRSA sepsis 2 mo post-op. The C1–C2 segmental lordosis was significantly increased by surgery (−4.2 0 vs. −11.80; P=0.016). The subaxial cervical spine became less lordotic in initial few months post-op but eventually regained more lordosis as time progressed. The C1 inclination came into more extended position w.r.t horizontal line post-op with minimal loss of inclination subsequently. C1–C2 fixation angle and anterior shift of C2 did not have significant correlation with long term functional outcome i.e. NDI and VAS (r=0.35, p=0.17).

Conclusion: The functional outcome following C1–C2 arthrodesis is usually good despite metalwork issues and incomplete fusion in these selective group of non-rheumatoid arthritis pathologies.

Proximal humeral fractures are common and often occur in osteoporotic bone. Suture fixation utilises the rotator cuff tendons as well as bone providing adequate stability and avoids complications associated with metalwork insertion.

Surgical exposure was via a delto-pectoral approach with minimal dissection of the fracture site. Initially a 2 suture technique was utilized with heavy ethibond sutures passed through drill holes either side of the bicipital groove; however, because of concerns about varus instability the technique now uses a third suture placed laterally acting as a tension band to prevent varus collapse. Patients with Neer 2 and 3 part fractures treated with suture fixation were assessed clinically (using the Constant score) and radiologically at a mean of 27 months post fracture.

To date 24 patients have been studied. The average age of the patients in our series was 70.2. All fractures progressed to union with no cases of radiological avascular necrosis. We had 2 cases of mal-union (-one varus and one valgus-), both with a 2-suture technique. One patient had early loss of fixation; re-exploration was performed with stability conferred by a third lateral suture. Active abduction > 120o was achieved in 9 patients with a mean Constant score of 72 compared to 89 on the un-injured contra-lateral side. We have demonstrated that suture fixation of displaced proximal humeral fractures is an effective alternative to fixation using metalwork. The advantages are that minimal soft tissue stripping of the fracture site is required and the potential problems associated with metalwork insertion into osteoporotic bone are avoided. Following one case of varus mal-union with a 2-suture technique we now routinely use a third suture to act as a lateral tension band.

Aim: To ascertain the accuracy of partial weight bearing.

Method: 6 healthy volunteers with a below knee plaster cast, 10 patients with uncemented hip replacements and 12 patients with lower limb fractures were trained to partial weight bear. They were asked to place the affected leg on a bathroom scale and to press on it till the prescribed limit. This process was repeated till the subject formed a mental image of the amount of load they must put through the limb. The ability to partial weight bear was tested in a gait lab by making them walk on a walkway incorporating a Bertec force platform. Exact magnitude of weight bearing was calculated from the vertical ground reaction forces produced.

Results: 4 out of 6 volunteers exerted mean weight of 20.3 kg above and the remaining 2 exerted 5.6 kg below that prescribed. Of the 22 patients, 19 exerted mean weight of 24.3 kg above and 3 patients exerted mean weight of 7.5 kg below that prescribed. As per Spearmanñs rank correlation test, the relationship between the prescribed weight bearing and the actual weight bearing was non-signiþcant (p=0.399) i.e., there is little relationship between the prescribed and actual weight bearing.

Conclusions: Neither patients nor healthy volunteers could partial weight bear to the extent required. They were either above or below the prescribed level of partial weight bearing. Current method of teaching partial weight bearing is inaccurate and has poor reproducibility. Such methods use static loading situations whereas walking is a dynamic activity. An inexpensive, easy to use, dynamic device is required to train patients to partial weight bear.

A previous study done in our unit showed good results in terms of union, stability and function following 2-suture repair of proximal humeral fractures. Healing took place usually with a mild degree of varus angulation but one failure of this technique when the fracture slipped into varus prompted us to re-evaluate our technique. The addition of a third (lateral) suture to the repair has been used as routine following this.

A prospective series of 24 patients with displaced Neer 2 and 3 part proximal humeral fractures was studied. The patients were reviewed at a mean of 22.5 months post fixation. The patients were reviewed clinically and graded according to the Constant Shoulder Score to assess range of movement, power, function and pain. This was compared to the contralateral uninjured shoulder.

Radiographic evaluation of fracture union, avascular necrosis and malunion was performed, and any complications of treatment were noted.

There were 24 2- and 3-part fractures. All the fractures united with no radiological evidence of avascular necrosis. At follow-up there was a mean Constant Score of 71.05 compared with a mean score of 84.5 on the uninjured contralateral shoulder. Active abduction of > 120° was achieved in 9 patients. Intraoperative stability in the varus/valgus plane was noted to be better.

All patients were satisfied with the results; the problem of instability in the coronal plane has not been a problem and the fractures have healed with no varus mal-union. There have been no additional complications with this technique compared to the 2-suture method.

We have successfully achieved stability after open reduction and suture fixation of 2- and 3-oart fractures of the proximal humerus. Following one case of varus instability using a 2 suture technique,

We have routinely supplemented this with a third (lateral) suture. There have been no additional complications using this method, the angulation of the fractures once healed are improved and none of the repairs have had a problem with varus slip.

There are very few reports on apophysitis of the iliac crest although similar afflictions of the knee, heel, and elbow are well recognised conditions. Excesive forefoot pronation has been suggested as a contributory factor in the development of iliac apophysitis. We present our experience of this not so well known problem.

Method: This is a prospective review of 8 patients (2- males, 6- females) between 12–16 years of age, who presented with pain in the hip of at least 3 months duration. They were prospectively reviewed over an average of 6 months (6–24 months). 7 of them were involved in some sort of sporting activity. 3 patients had to miss school due to pain. All of them had tenderness over the iliac crest, normal range of hip movements with pain on resisted hip abduction. None of them had any deformities in the lower limbs. Blood counts, ESR, CRP and radiographs were normal. 3 patients had persistent pain over 12 months hence had a bone scan which was normal. All patients had full symptomatic relief following rest, activity modification and anti-inflammatory medication.

Conclusions: Unlike previous reports, our patients did not have characteristic radiographic changes thus the diagnosis of this condition seems to be mainly clinical. All pediatric patients with hip pain should be thoroughly investigated to rule out other sinister causes. None of our patients had any foot deformities questioning the hypothesis that iliac apophysitis develops secondary to excessive forefoot pronation. It is important to be aware of this condition, which causes considerable distress and can be relieved easily by conservative means.

During arthroplasty acetabular deficiencies could be reconstructed using different techniques. We describe our early results of acetabular reconstruction using impaction bone grafting supported by a wire mesh.

This is a retrospective review of 45 patients (46 hips, 1 bilateral) who had acetabular reconstruction with impaction bone grafting and wire mesh between 1995–1999. The average follow up was 36 months (18–54 months). Mean age at operation was 70 years (41–88 years). 28 were primary (osteoarthritis) and 18 were revisions (painful aseptic loosening). Paprowsky’s classification was used to grade the defects – 44 hips: grade II, 2 hips: type III A. Containment was achieved with a wire mesh anchored with screws. The defect was filled with morcellised bone graft, which was impacted under the mesh (autograft in primary and allograft in revisions). Cemented Exeter components were used. Merle d’Aubigné Postel hip score and AAOS proforma was used during follow-up and cup migration was assessed using Nunn and Freeman’s method.

Merle d’Aubigné Postel score showed improvement of at least 10 points in each patient (Charnley prefix: type A – 27 patients; type B – 10 patients; Type C – 8 patients) Mean vertical and horizontal cup migration of 2.6 mm each was seen, which was not statistically significant (at 5% level). Graft incorporation was seen in all radiographs. 32 hips showed a thin sheet of new bone over the superolateral surface of the mesh which was regarded as a sign of good graft incorporation. There were no complications specifically related to the wire mesh or screws (1 – superficial wound infection, 2-DVT, 2- dislocations treated conservatively). None of the patients required further revision surgery.

We are encouraged by our early results of this method for reconstruction of peripheral acetabular rim deficiencies because it restores anatomy, biomechanics, replaces bone loss and provide a stable construct.