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Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_II | Pages 107 - 107
1 Feb 2003
Birdsall PD Kumar A Stothard J
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To compare the results of standard open carpal tunnel release against minimal access release using the ‘Stryker Knifelight’ in the same patients.

A prospective, randomised trial was carried out recruiting all patients with bilateral carpal tunnel syndrome. There were 26 patients (18 females and 8 males), with a mean age of 48 years. The patients were randomised to having the ‘Knifelight’ on one side and therefore acted as their own controls. They were assessed preoperatively, and at 2 and 6 weeks postop by questionnaire, and grip strength measurements.

All sides were improved following release but those done by the open method were more likely to have complete resolution at 6 weeks. In contrast, the ‘Knife-light’ sides had better grip strength and allowed earlier return to work. In terms of preference, the patients were split equally between the 2 techniques. 2 patients had minor complications following minimal access release including one with numbness over the thenar eminence for 6 weeks.

This study shows that open carpal tunnel release remains the ‘gold standard’ but the minimal access technique offers some advantages in terms of quicker recovery.


Orthopaedic Proceedings
Vol. 85-B, Issue SUPP_II | Pages 119 - 119
1 Feb 2003
Murray JRD Birdsall PD Deehan DJ Weir DJ Pinder IM
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There is little data on the long-term outcome of rotating hinge total knee arthroplasty. We provide a clinical and radiographic assessment of survivorship of the Kinematic rotating hinge total knee arthroplasty (How-medica, Rutherford, NJ), in a series of 72 implants, performed by a single surgeon in one unit, between 1983 and 1997. Survival analysis using known all cause revision revealed a 92% five-year implant survival, but worst-case scenario was 31% at five years.

In a subset of 27 patients we used the Nottingham Health Profile (NHP) to assess prospectively the changes in health-related quality of life following rotating hinge arthroplasty. In this salvage arthroplasty setting we demonstrate a significant improvement in two modalities of the NHP (pain and physical mobility).


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_II | Pages 165 - 165
1 Jul 2002
Murray J Birdsall PD Deehan DJ Pinder IM
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Aim: To prospectively determine the functional outcome of revision total knee replacement (TKR).

Method: We carried out a prospective outcome study recruiting 65 consecutive revision total knee replacements carried out by the senior author between 1992 and 1995. The indications for revision were aseptic loosening in 40 cases, instability in 7, infection in 4, and 16 cases for other causes. All patient was assessed preoperatively and at 3 and 12 months postop using the Nottingham Health Profile (NHP) to measure general health status. As part of this ongoing study, followup data is available for 24 patient at 5 years.

Results: There were 65 revisions in 60 patients, 5 being bilateral. There were 37 females and 23 males, with a mean age of 63 years (range 29 to 86 years). The preoperative scores showed that the patient had significant disability related to their failed TKR. Three months postop, there was a significant improvement in the NHP scores for pain and social isolation. At 12 months, the level of pain was again significantly improved over the 3 month score.

At 5 years, the pain score for the revision group deteriorated but remained better than the baseline level. This is in contrast to post primary TKR, where the improvement in pain score was maintained from 3 months onwards.

Conclusion: This study shows a significant improvement in the level of pain following revision knee arthroplasty. However, patients remain significantly disabled afterwards and do not show the very marked improvement in general health seen after primary TKR.


Orthopaedic Proceedings
Vol. 84-B, Issue SUPP_II | Pages 167 - 167
1 Jul 2002
Murray JRD Birdsall PD Deehan DJ Weir D Pinder IM
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Aim: To determine the quality of life and radiological outcome of the rotating hinge total knee prosthesis as a salvage procedure for failed knee arthroplasty.

Methods: Forty-seven consecutive revision total knee arthroplasties, using the rotating hinge component, implanted between November 1983 and June 1997, were studied. The principal indications for surgery were pain with ligamentous laxity and gross bone loss. There were 43 patients, 11 males, 32 females, 19 left and 28 right, 21 with rheumatoid disease and 22 with osteoarthritis. The mean age at revision was 68 years, mean time from primary procedure to revision of 8 years and a mean number of previous knee procedures of 1.6 (range 1–5). The average time to final follow-up was 5 years. Quality of life was determined using the Nottingham Health Profile (NHP) combined with standard clinical and radiological assessment.

Results: Of the 47 revision procedures, full clinical follow-up information was available on 43 (91.5%), radiographic follow-up on 38 (80.9%). Complications occurred in 10 out of the 47 arthroplasties (21.3%) including 4 deep infections, 2 femoral fractures, 2 patients with clinically apparent aseptic loosening and 2 significant extensor mechanism problems. Survivorship analysis revealed a 5year cumulative implant survival of 89%. Significant improvements in quality of life (pain and physical mobility) were shown at 12 months post-operatively.

Discussion: This is a prospectively-studied series of salvage arthroplasty procedures. We regard quality of life as a key indicator of surgical success after knee arthroplasty. Rotating hinge arthroplasty offers objective and reproducible improvement in quality of life for failed knee arthroplasty with ligamentous instability.