STRESZCZENIEWstęp. Ce lem pra cy jest przed sta wie nie wy ni ków za bie gów alo pla styk sta wu bio dro we go z za sto so wa niem trzpie nia Ta per loc.Ma te riał i me to dy. Do ba dań za kwa li fi ko wa no 117 pa cjen tów (75 ko biet i 42 męż czyzn), u któ rych wy kona no 121 za bie gów alo pla sty ki sta wu bio dro we go z uży ciem trzpie nia Ta per loc. Śred ni wiek pa cjen tów w dniu za bie gu wy no sił 53,8 lat (za kres od 24 do 75 lat). Śred ni okres ob ser wa cji wy no sił 159,5 mie się cy.Wy ni ki. W oce nie przed ope ra cyj nej wszy scy pa cjen ci mie li wy nik zły wg kla sy fi ka cji Mer le d'Au bi gne i Poste la w mo dy fi ka cji Charn leya. Śred nia po pra wa po ope ra cji we dług uży tej ska li wy nio sła 6,6 punk tów. Wy nik bar dzo do bry od no to wa no w 86 przy pad kach, wy nik do bry w 19 przy pad kach, wy nik do sta tecz ny w 9, a wynik zły w 7 przy pad kach. Wy nik zły za wsze zwią za ny był z ob lu zo wa niem ele men tów en do pro te zy: pa new ki w 5 przy pad kach, trzpie nia w 1 przy pad ku i sep tycz nym ob lu zo wa niem ca łej pro te zy w 1 przy pad ku. W 6 przypad kach (4,9%) od no to wa no obec ność kost nie nia po zasz kie le to we go. Wg es ty ma to ra Ka pla na-Me ie ra dzie się -cio let nie praw do po do bień stwo prze ży cia ca łej en do pro te zy wy nio sło 94,21%, a sa me go trzpie nia 98,34%.Wnio ski. 1. Na sze śred nio po nad trzy na sto let nie ob ser wa cje wska zu ją, że za sto so wa nie trzpie nia Ta per loc umoż li wia znacz ne zre du ko wa nie do le gli wo ści bó lo wych bio dra i osią gnię cie trwa łe go, do bre go wy ni ku kli niczne go. 2. Przy bra ku po wi kłań i pra wi dło wej tech ni ce ope ra cyj nej ry zy ko asep tycz ne go ob lu zo wa nia jest zni ko me.Sło wa klu czo we: alo pla sty ka sta wu bio dro wego, trzpień Ta per loc, wy ni ki aloplastyki SUMMARY Background. The aim of this paper is to present the results of hip joint arthroplasty with the use of the Taperloc stem.Material and methods. The study group consisted of 117 patients (75 women and 42 men) who underwent 121 hip joint arthroplasties with Taperloc stems. Mean age of the patients at surgery was 53.8 years (range: 24-75 years). Mean follow-up period was 159.5 months.Results. Pre-operative Merle d'Aubigne-Postel scores (modified by Charnley) of the study group were poor in all patients. Mean post-operative improvement was 6.6 points. Excellent results were obtained in 86 cases, good in 19, fair in 9 and poor in 7 cases. Poor results were always associated with implant component loosening: 5 cases of acetabular cup loosening, 1 case of a loosened stem and 1 septic loosening of the entire endoprosthesis. In six cases (4.9%), patients developed heterotopic ossification. According to the Kaplan-Meier estimator, 10 years' survival probability was 94.21% for the whole endoprosthesis and 98.34% for the stem alone.Conclusions. 1. Our follow-up data covering a mean period of over 13 years showed that the use of the Taper loc stem substantially reduces hip pain and results in a good lasting clinical outcome....

1. Total hip arthroplasty is a valuable method of surgical treatment of advanced coxarthrosis of various aetiologies in patients of productive age. 2. Most patients who worked before the surgery return to work in the same position and work time. 3. Only dysplastic coxarthro-ses have an unfavourable prognosis with respect to starting or resuming work after surgery.

The study evaluated the professional activity of patients after a total cementless hip replacement surgery performed at the age of ≤30 years. Material and Methods: The study group comprised 87 patients, with 95 total cementless hip replacements. The mean age was 25.7 years. The youngest patient was 17 years old, and the oldest 30 years old. The mean length of observation was 20.1 years, ranging 5-33 years. All patients underwent clinical and radiological evaluations before the surgery, and again in the third, sixth and twelfth months after the surgery. Further follow-up visits were performed every year. The tests were scored according to the Merle d'Aubigné and Postel (MAP) classification, as recommended by the Polish Society of Orthopaedics and Traumatology. Postoperative radiographs were used to assess the position of the endoprosthesis, and the degree of implant healing in the bone tissue. The data was subjected to statistical analysis. Results: Of the surveyed group, 67 patients were professionally active before the surgery: 34 were white-collar workers, 29 manual workers, and 4 students or school pupils. The remaining 20 had not worked for many years, and were receiving sickness or disability benefits. An excellent result, according to the Kellgren-Lawrence classification, was noted in 22 cases, a good result in 42 cases, and a satisfactory result in 6 cases. In 25 cases, a poor result was observed. All of the patients professionally active before the surgery returned to work following the procedure. A further analysis found that 15 previously-unemployed patients commenced employment following the procedure. The mean length of the sick leave was 196.2 days, and rehabilitation payments were granted in 5 cases. Conclusions: Total cementless hip replacement is a valuable method of treating osteoarthritis in young patients. All of the patients who worked before the surgery returned to work in the same position and on the same employment conditions. Most of the previously-unemployed patients commenced employment following the procedure.

Aneurysmal bone cyst (ABC) is a bone tumor which occurs mostly in young adults. Despite its benign character, it may sometimes locally turn malignant and can reach a significant size. Therefore, it is not uncommon for this disease to become similar to a malignant, destructive process and to be difficult to diagnose. We present a case of a 12-year-old girl with a rapidly growing mass in the region of the left hip joint. Imaging (X-ray, MRI, CT) showed a growing lesion in the proximal part of the femur that damaged the cortical layer of the bone. This suggested a presence of rhabdomyosarcoma. The lesion was removed surgically and the bone defects were filled with grafts. Two months after the surgery the patient reported pain in the area of the right groin and left knee. X-ray showed bone lesions in the right pubic bone and the left femoral bone. The biopsy showed no pathological lesions. One year after the surgery, lesions in the X-ray image of the right pubic bone and left femoral bone remitted spontaneously. Ten years after the diagnosis of the aneurysmal bone cyst no recurrence of the disease or other ailments was observed. NOWOTWORY J Oncol 2019; 69, 2: 67-70

The aim of this paper is to present the femoral stem fracture as a rare complication of total hip arthroplasty and describe further management in such cases. We present 5 cases of stem fracture in the Mittelmeier prosthe­sis which occurred from 8 to 29 years after the primary procedure. In three cases, the primary hip arthroplasty was performed due to dysplastic coxarthrosis. The remaining two patients had idiopathic and post-traumatic coxarthrosis. The four female patients underwent revision hip arthroplasty with stem replacement. One patient refused surgical treatment and has been followed up at the outpatient clinic. Annual clinical and radiological examination is an approved method for detecting late complications Hip arthroplasty should be performed at specialised centres where relevant prostheses and instruments are used. A transfemoral approach and the use of revision stems anchored in the femoral shaft is a method of choice for revision procedures performed due to stem fractures.