Introduction

Historically, amputation or rotationplasty were the treatment of choice in skeletally immature patients. The introduction of expandable endoprostheses in the late 1980s offered the advantages of limb-salvage and limb length equality at skeletal maturity and a promising alternative with improved cosmetic results and immediate weight bearing.

We retrospectively studied 14 patients with proximal and diaphyseal tumours and disappearing bone (Gorham’s) disease of the humerus treated with wide resection and reconstruction using an allograft-resurfacing composite (ARC). There were ten women and four men, with a mean age of 35 years (8 to 69). At a mean follow-up of 25 months (10 to 89), two patients had a fracture of the allograft. In one of these it was revised with a similar ARC and in the other with an intercalary prosthesis. A further patient had an infection and a fracture of the allograft that was revised with a megaprosthesis. In all patients with an ARC, healing of the ARC-host bone interface was observed. One patient had failure of the locking mechanism of the total elbow replacement. The mean post-operative Musculoskeletal Tumor Society score for the upper extremity was 77% (46.7% to 86.7%), which represents good and excellent results; one patient had a poor result (46.7%).

In the short term ARC effectively relieves pain and restores shoulder function in patients with wide resection of the proximal humerus. Fracture and infection remain significant complications.

The purpose of this study is to compare the healing progress in cases with wound healing complications with or without VAC assistance.

From 2005 to 2008, 32 patients with a mean 56 years of age had wound healing complications necessitating for further operative intervention. 26 cases were classified as stage III and 6 cases were classified as stage IV according to the National Pressure Ulcer Advisory Panel. The mean extent of wounds was 7cm2. 17 cases (group A) were treated with repeated removal of necrotic debris. In 15 cases (group B) the VAC device was applied (75mmHg). The 2 groups were compared on the basis of total hospital stay, need for additional operation, and re-infection rates.

Mean hospital stay was 25.2 days in group A and 16.5 days in group B (p< 0.05). 7 cases needed re-operation in group A comparing to 2 in group B (p< 0.05). Re-infection appeared in 5 cases of group A comparing to 1 case of group B (p< 0.05). 1 patient of group B used VAC therapy in lower negative pressure (50mmHg) 6 days post application due to unrelenting pain.

Negative pressure wound therapy is safe and effective. It minimises the total hospital stay, it is associated with lower recurrence, re-infection and re-operations rates, and lowers total cost of therapy.