The New Zealand Joint Registry (NZJR), as well as collecting data about revision, collects Oxford knee scores (OKS) at six months after the operation and categorises these into poor, fair, good and excellent.
Healthcare resource use data (including knee-related outpatient, general practice and physiotherapy consultations and theatre time, hospital days, complications and knee components used during the primary admission for TKR and during any knee-related readmissions or revisions) were collected prospectively for all KAT participants and valued at 2007 2008 prices, as described previously.
In addition to the retrieved components, clinical data (implantation time, age, sex, body mass index [BMI], UCLA activity score, and reason for implant revision) were collected for all patients in the ceramic-metal and metal-metal taper cohorts (Tables 1 and 2, respectively).
Adverse events regarding periprosthetic fracture, nerve palsy, wound infection, deep thrombosis or pulmonary embolism, dislocation and revisions will be collected.
Surgical outcomes, including insertion of the microstimulator within the pterygopalatine fossa, explants and lead revision rates were collected.
From the NAR, data on patient demographics (Table 2), diagnosis, type of prosthesis, date of surgery, and information on revision surgery were collected.
Data on primary and revision THR surgery are collected, and the patients are followed prospectively until revision, death, or emigration.
In a series of 103 acetabular revisions, Böhm and Banzhaf collected 26 cases using APC, with a success rate of 83% at a mean follow-up of 4.5 years, and positive outcomes were associated with bulk allografts (88/103) protected by a support ring [ 36].
Also, the retrieved liners were collected at revision surgery and do not necessarily capture the behavior of well-functioning implants.
Soft tissue samples, collected during revision operation, were analyzed for ions of the metals from the stems had been (Ti, Co, Cr, Mo, Ni and Al).
