Late presentation of DDH continues to remain a major problem particularly in the developing countries. Femoro-Acetabular Zones (FAZ) system is created to find a relation between acetabular maturity and severity of dislocation, in one hand, and the success of closed reduction, on the other hand. We hypnosis that the lower the acetabular index and the closer the femoral head to the acetabulum, the more likely the success of treatment. Thus, a retrospective study was performed on late diagnosed DDH hips that underwent closed treatment at a particular hospital in the Middle East. FAZ are drawn on the AP view of the pelvic x-ray and is based on a perpendicular from the acetabular index at the lateral margin of the superior acetabular rim then another perpendicular to Perkin's line is drawn. This gives three zones, graded I-III. The center of femoral metaphysis is identified denoting the position of the femoral head in relation to the zone classification. FAZ system was applied on 65 pelvic radiographs; mean patient age was 24 months (range: 12 to 36 months) with a minimum follow up of 3 years. Overall, 37 of 65 hips (57%) achieved a satisfactory outcome (Severin I&II), while 22 hips (33%) were found to be unsatisfactory (Severin III). 6 hips (10%) needed an open reduction (p-value 0.001). FAZ could perfectly predict the successful cases. FAZ system is a simple and novel classification and if employed, could reasonably predict the outcome of non-surgical treatment of DDH after walking age.

Introduction: There is concern that cobalt and chromium ions released from metal on metal (MOM) bearing surfaces may have an adverse effect on renal function over time.

Aim: The aim of this study was to assess renal function in patients who have had MOM hip resurfacing at between two and seven years follow up.

Methods and Materials: Seventy seven patients had MOM hip resurfacing performed in our unit between 1st March 2001 and 28th February 2006. All patients were invited to present for an up to date renal profile. Of these, 59 patients volunteered a sample (76%). Forty-eight were male and eleven were female. Ages ranged from 33 to 63 years (mean 59 years). Nine patients had hypertension pre-operatively. No other risk factors for renal dysfunction were present in our patient population.

Results: Pre-operative urea and creatinine levels ranged from 2.9 to 10.6mmol/L (mean 6.4mmol/L) and 50 umol/L to 121umol/L (mean 77.2umol/L) respectively. Post-operative urea and creatinine levels ranged from 5.3mmol/L to 6.3mmol/L (mean 5.3mmol/L) and 62umol/L to 75umol/L (mean 67umol/L) respectively. Two patients who had normal serum creatinine profiles pre-operatively showed mildly elevated serum creatinine levels at most recent follow up.

Conclusion: Medium term follow up of patients following MOM hip resurfacing does not suggest evidence for the development of renal impairment in this patient population.

The purpose of this study was to investigate if there is a relationship between the timing of reduction of displaced supracondylar humerus fractures in children and post-operative complications and open reduction rate and to evaluate the usefulness of the definition of early (eight hours or less following injury) and delayed (more than eight hours following injury) treatment used in the literature.

The case notes of children who were treated at our institution for a Gartland grade 2b and 3 supracondylar humerus fracture between July 1995 and June 2002 were reviewed.

We identified 431 patients with a Gartland grade 3 and 141 patients with a Gartland grade 2b fracture. The time from injury to surgery ranged from 2 hours to 13 days. The average time to reduction was 12 hours for grade 3 injuries and 21 hours for grade 2b injuries. None of the patients had an initial closed reduction in the emergency department. 229 patients were treated early with two compartment syndromes, five ulnar nerve, one lateral cutaneous nerve of the forearm, one median nerve - and one radial nerve palsy, one septic arthritis, one pin site infection, six open reductions; one re-manipulation was required for loss of reduction. The delayed group consisted of 343 patients with six ulnar nerve, three median nerve, one radial nerve and one lateral cutaneous nerve of the forearm palsy, three pin site infections, five open reductions; re-manipulation was required in one patient. All nerve palsies recovered post-operatively. The open reduction rate was two percent. The majority of displaced supracondylar humerus fractures in children do not need to be operated on as an emergency. Operation of fractures not associated with a neurovascular compromise within eight hours of the injury does not seem to reduce the rate of significant complications and open reduction rate. In contrary the most severe complication, the development of a compartment syndrome was only seen in the early group. We did not identify an association between complication rateS and a time threshold. Therefore the differentiation between early and delayed treatment used in the literature seems to be arbitrary and not useful.

All supracondylar humeral fractures managed with closed or open reduction and pin fixation at the Hospital for Sick Children between 1995 and 2002 were retrospectively reviewed. Time from injury to treatment, post reduction complications and need for open reduction were recorded. Fractures treated ≥ 8 hours from injury were considered in the early treatment group while > 8 hours were considered in the late treatment group. Fractures presenting with a cold hand (four patients) were taken to the operating room as quickly as possible and were excluded from the study.

There were 431 patients with a Gartland grade 3 and 141 patients with a Gartland grade 2b. The time from injury to surgery ranged from 2 hours to 13 days. The average time to reduction was 12 hours for grade 3 injuries and 21 hours for grade 2b injuries. None of the patients had an initial closed reduction in the emergency department. The early treatment group consisted of 230 patients with two compartment syndromes, six ulnar-, one superficial radial-, one median- and one radial nerve palsy, one septic arthritis, one pin site infection, six open reductions and one re-manipulation was required for loss of reduction. The late treatment group consisted of 342 patients with six ulnar-, three median-, one radial nerve palsy and one lateral cutaneous nerve of the forearm palsy, three pin site infections, five open reductions and re-manipulation was required in one patient. All nerve palsies recovered post-operatively.

Conclusion: There was no significant difference in the proportion of complications between the early and late treatment group, but the most severe complication, the development of a compartment syndrome was only seen in the early group. Delayed treatment of supracondylar humeral fractures seems to be safe in a large number of patients, and in fact, most of our patients were treated more than eight hours from the injury. Early operation of fractures not associated with a neurovascular compromise also does not seem to reduce the complication rate. Nevertheless the decision when to operate needs to be decided for each patient individually.

The purpose of this study was to determine the surgical risks and recurrence rate associated with the excision of osteochondroma from the long bones most frequently operated on in our institution; the femur, tibia, humerus and fibula.

Two hundred and twenty four osteochondromata were excised in total between July 1992 and January 2001. The medical records and radiographs of 126 patients who had 147 osteochondromata excised from the femur, tibia, humerus and fibula were reviewed. Of these, 30 patients presented with multiple osteochondromata, accounting for 48 of the 147. Fifty three involved the femur (2 proximal), 55 the tibia (16 distal), 12 the fibula (2 distal) and 27 the proximal humerus. The mean age at excision was 12.5 years (2–18 years) and the mean follow-up was five years (1 to 10 years).

There were 15 surgical complications (10% of excisions) including one compartment syndrome, five superficial wound infections, two haematoma formations which required evacuation, one partial wound dehiscence, one deep infection with sinus formation which required excision, one sural nerve and one saphenous nerve neuropraxia, one cutaneous nerve entrapment and two hypertophic scar/keloid formations.

The patient with the compartment syndrome had excision of a distal femoral, proximal tibial and fibular osteochondroma during the same procedure and was diagnosed to have won Willebrand disease after the surgery. There were eight recurrences involving five patients with multiple osteochondromata and three in whom the excision was incomplete due to the proximity to neurovascular structures.

Surgical risks related to excision of osteochondroma are relatively frequent and must not be underestimated. Excision should therefore only be performed if strongly indicated. The recurrence rate (5.5%) seems to be higher than previously reported in the literature (2%) and generally affects patients with multiple osteochondromata. Incomplete excision resulted in recurrence in all our cases.